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FDMC8882 - 30V, 16A N-Ch PowerTrench MOSFET | onsemi
The onsemi FDMC8882 is a 30 V, 16 A N-channel PowerTrench power MOSFET with a maximum on-state resistance of 14.3 mOhm, housed in a compact 8 x 8 mm MLP (PQFN) surface-mount package. Originally introduced by Fairchild Semiconductor and now manufactured by onsemi, it targets power management and load-switching duties where low conduction loss in a small footprint is essential. A power MOSFET is a voltage-controlled semiconductor switch used in the power stage of virtually every electronic system, sitting within the hierarchy of discrete power semiconductors alongside diodes and IGBTs. In portable designs, the MOSFET is typically the last switching or load-isolation element between a battery pack and the load, so its RDS(on), gate charge and package thermal resistance directly determine efficiency and battery runtime. Key features of the FDMC8882 include its advanced PowerTrench process, which is especially tailored to minimize on-state resistance; a 14.3 mOhm maximum RDS(on) that reduces conduction losses at high load currents; a 30 V drain-source rating suited to single- and multi-cell lithium-ion battery stacks; and a 16 A continuous drain current capability. The large exposed drain pad of the MLP package provides a low thermal path to the PCB, allowing heat generated during switching and conduction to spread into copper planes without a heatsink. Technically, the PowerTrench trench-gate structure optimizes the trade-off between specific on-resistance and gate charge, giving superior figure-of-merit performance compared with older planar devices in the same voltage class. This makes the part effective both as a low-frequency load switch, where conduction loss dominates, and as a switching element in moderate-frequency DC-DC conversion stages where gate-charge-related losses matter. Typical applications include load switching and battery isolation in notebook computers, power-path and protection switches in portable battery packs, and power management rails in consumer and industrial equipment. The 30 V rating provides comfortable headroom for 11.1 V and 14.8 V Li-ion packs plus transients. Design consideration: PCB layout dominates real-world performance - maximize copper area under the exposed drain and source pads, since the package thermal resistance and current rating assume an adequately cooled board. Estimated junction temperature rise must always be checked against the 150 C maximum at the actual load profile. This page synthesizes distributor pricing, cross-reference data, and drop-in alternative analysis not found in the manufacturer datasheet alone.
FDMC89521L - Dual N-Channel 60V 8.2A MOSFET | onsemi
The onsemi FDMC89521L is a dual N-channel MOSFET array rated 60 V and 8.2 A, housed in an 8-Power33 (3 mm × 3 mm MLP) surface-mount package with enhanced thermal performance. Each MOSFET exhibits a low 17 mΩ Rds(on) at Vgs = 10 V, enabling high-efficiency switching in synchronous buck, load-switching, and battery-protection topologies. Two FETs in one footprint reduce PCB area and parasitic loop inductance compared with discrete pairs. A dual MOSFET is a semiconductor device that integrates two transistors in a single package, commonly used to build complementary or synchronous switching stages. MOSFET arrays belong to the discrete semiconductor family, branching into power MOSFETs and, more specifically, trench-gate N-channel devices. Within a synchronous buck converter the low-side and high-side FETs sit next to each other on the PCB; a dual-packaged part halves the gate-drive loop and slashes the input-capacitor ripple current. Compared with two single SO-8 MOSFETs, an MLP-8 dual cut PCB area roughly in half and improves thermal spreading. Key features include 60 V drain-source breakdown, 8.2 A continuous drain current at TA = 25 °C, 17 mΩ Rds(on) at Vgs = 10 V, low gate charge for fast switching, an integrated drain-to-source body diode for inductive commutation, and 1.9 W / 16 W power dissipation ratings at TA = 25 °C and TC = 25 °C respectively. The Power33 package exposes a large metal pad that pulls heat directly into the PCB copper pour. The FDMC89521L uses onsemi's POWERTRENCH process, a shielded-gate trench technology that reduces on-resistance per unit area while minimizing Miller capacitance. The 17 mΩ Rds(on) is achieved at a relatively low gate charge, allowing the part to switch efficiently at 500 kHz to 1 MHz node-switching frequencies typical of point-of-load converters. The dual-die layout is symmetric so the two FETs share electrical and thermal characteristics, simplifying dual-channel driver designs. Typical applications include synchronous buck DC-DC converters in telecom and networking equipment, motor-driver H-bridges for small BLDC motors, battery-management load switching, USB Type-C / PD power-path OR-ing, and point-of-load voltage regulator modules. The dual-FET configuration makes it especially useful in any topology where two MOSFETs are mounted next to each other on the same switching node. When designing with this device, ensure the gate-drive voltage is at least 10 V for full Rds(on) performance. A 4.5 V drive is supported for low-voltage logic-level use but on-resistance roughly doubles. Pay attention to the exposed pad (Pin 1 / EP) - it MUST be soldered to a copper pour of at least 1 sq. inch to achieve the rated 1.9 W TA dissipation.
FDN337N - 30V 2.2A N-Channel MOSFET SOT-23 | onsemi
The onsemi FDN337N is an N-channel logic-level enhancement-mode power MOSFET rated for 30 V drain-source voltage and 2.2 A continuous drain current (at 25 C ambient), packaged in the compact surface-mount SOT-23 (SuperSOT-3) outline with 500 mW power dissipation at Ta. A power MOSFET is a voltage-controlled semiconductor switch used throughout power management hierarchies - from low-side load switches and relay drivers up to DC-DC converter stages. Logic-level MOSFETs like the FDN337N are a sub-class whose gate threshold is low enough for the gate to be driven directly from microcontroller or logic IC outputs (3 V to 5 V rails) without a dedicated gate-driver stage, simplifying circuit design and reducing bill-of-materials cost. The defining feature of the FDN337N is onsemi (formerly Fairchild Semiconductor) proprietary high-cell-density DMOS technology. This very high density silicon process is specifically tailored to minimize on-state resistance, which reduces conduction losses and in-line power loss in the small SOT-23 body. Logic-level gate drive is the second headline feature, allowing direct interfacing with 3 V and 5 V control logic common in portable systems. According to the onsemi datasheet, the device is particularly suited for low-voltage, battery-powered applications such as notebook computers, portable phones, and PCMCIA cards, where fast switching speed and low in-line power loss are required in a very small surface-mount package. The 30 V VDS rating provides comfortable headroom on 12 V and multi-cell battery rails. Typical applications include low-side load switching in portable electronics, relay and solenoid drivers, battery management disconnect switches, and general-purpose logic-level switching in consumer and industrial boards. When designing with this part, verify the gate-drive amplitude against the datasheet RDS(on) test conditions, since on-resistance at 2.5 V drive is higher than at 4.5 V or 10 V drive, directly affecting conduction loss and junction temperature. This page synthesizes distributor listings, second-source drop-in options, and practical design notes not found in the manufacturer datasheet.
FDP025N06 - 60V 265A N-Channel PowerTrench MOSFET | onsemi
The onsemi FDP025N06 is an N-Channel PowerTrench MOSFET rated at 60 V drain-source voltage, 265 A continuous drain current, and 2.5 milliohm maximum on-state resistance, packaged in a through-hole TO-220AB (3 pins plus tab) package. Originally introduced by Fairchild Semiconductor, the part is now manufactured and supported by onsemi. A power MOSFET is a voltage-controlled semiconductor switch used in the discrete power device hierarchy (MOSFET -> power transistor -> power management). Unlike bipolar transistors, MOSFETs offer essentially static gate drive, fast switching, and low conduction loss when fully enhanced, making them the default choice for power conversion and motor control stages. The defining feature of the FDP025N06 is its extremely low 2.5 milliohm RDS(on), achieved with Fairchild's advanced PowerTrench process, which uses a trench-gate cell structure tailored to minimize on-resistance while maintaining superior switching performance. At high load currents, conduction loss scales with the square of current, so halving RDS(on) quarters the I2R loss - this directly translates to cooler operation, smaller heatsinks, and higher efficiency in high-current paths. The TO-220AB package provides a low thermal-resistance path through the metal tab to a heatsink, supporting the very high 265 A current rating (at specified case temperature) and making the device easy to mount, service, and rework on through-hole boards. Typical applications include DC-DC converter power stages, motor drives, high-current switching supplies, battery protection circuits, and power distribution systems where low conduction loss at 60 V class blocking voltage is required. When designing with this device, always derate the current rating against actual thermal conditions - the 265 A figure applies at controlled case temperature, and real dissipation is limited by RDS(on) x I2 and heatsinking. This page adds value beyond the datasheet by consolidating distributor pricing, verified drop-in alternatives, and practical engineering design notes in one place.
FDP030N06 - 60V N-Channel MOSFET 3.2mOhm TO-220 | onsemi
The onsemi (Fairchild Semiconductor) FDP030N06 is an N-Channel PowerTrench MOSFET rated at 60V drain-source voltage, 120A continuous drain current at Tc=25C, and a maximum on-resistance of 3.2 mOhm, housed in a through-hole TO-220-3 package. A power MOSFET is a voltage-controlled semiconductor switch used at the top of the discrete power device hierarchy within power management systems. Unlike bipolar transistors, MOSFETs exhibit essentially static gate drive requirements and very low conduction losses when driven fully on, making them the dominant choice for switch-mode power conversion above a few watts. Key features of the FDP030N06 include Fairchild PowerTrench trench technology for extremely low RDS(on) (2.6 mOhm typical at the specified test current), fast switching speed, low gate charge, 100% avalanche testing, and high power handling capability of up to 231W at Tc=25C. These characteristics minimize conduction and switching losses in high-current converters. Technically, the trench-gate structure multiplies channel density per unit die area, dramatically reducing specific on-resistance compared with planar MOSFETs. Lot-to-lot process variation is minimized for robust device performance. Per the manufacturer datasheet, typical applications are power supplies and general high-current switching circuits such as DC-DC converters, synchronous rectification, and motor control. Typical applications include switch-mode power supplies, battery-powered high-current motor drives, and low-side switching in welding and inverter equipment, where the 60V rating and 3.2 mOhm RDS(on) directly reduce heat-sinking requirements. Design consideration: derating is essential; the headline 120A and 231W ratings apply at a case temperature of 25C, so thermal design, not the die, usually limits usable current in through-hole TO-220 designs. This page synthesizes distributor availability data, cross-reference findings, and practical design notes not consolidated in the manufacturer datasheet.
FDP100N10 - 100V N-Channel PowerTrench MOSFET | onsemi
The onsemi FDP100N10 is an N-channel PowerTrench MOSFET rated for 100 V drain-source voltage, 75 A continuous drain current (at Tc) and a maximum on-state resistance of 10 mOhm, housed in a through-hole TO-220-3 (TO-220AB) package. Fairchild Semiconductor (now part of onsemi) designed the FDP100N10 using the advanced PowerTrench process, which tailors cell structure and gate geometry to minimize on-state resistance while preserving superior switching performance. A power MOSFET is a voltage-controlled semiconductor switch and rectifier that dominates the power transistor hierarchy for medium-voltage, high-current switching. Unlike bipolar junction transistors, MOSFETs require negligible steady-state gate current, switch in tens of nanoseconds, and combine fast switching with low conduction loss. In the power-management hierarchy, the FDP100N10 sits as a discrete power transistor feeding applications from AC-DC converters to motor drives. Key features of the FDP100N10 include ultra-low 10 mOhm RDS(on) for minimal conduction loss, a 100 V breakdown rating for off-line and 48 V bus designs, 208 W power dissipation capability at Tc, and gate-source voltage limits of plus or minus 20 V. The threshold voltage is specified at 4.5 V maximum at 250 uA, allowing logic-friendly drive with standard gate-driver ICs. Technically, the PowerTrench process uses a shielded-gate trench architecture that reduces specific on-resistance per unit area and moderates gate charge, directly lowering switching loss in high-frequency converters. This yields superior figure-of-merit (RDS(on) x Qg) versus older planar MOSFET technologies, which is critical for efficiency-targeted power stages. Typical applications include switching applications such as AC-DC converters, LED lighting power supplies, DC-DC power stages, and motor control circuits where 100 V tolerance and low conduction loss are required. Design consideration: the TO-220AB package is through-hole, so thermal design centers on the heatsink interface; ensure the mounting tab reaches safe junction temperatures and add a negative-voltage gate drive margin for hard-switching topologies. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
FDP86363-F085 - 80V 110A N-Channel PowerTrench MOSFET | onsemi
The onsemi FDP86363-F085 is an 80V, 110A N-Channel PowerTrench MOSFET housed in a TO-220-3 (TO-220AB) package, delivering 2.8m ohm typical on-resistance and 300W continuous power dissipation. Designed with the onsemi PowerTrench process, this automotive-grade MOSFET targets high-current synchronous-rectifier and motor-drive stages where low conduction loss and high avalanche ruggedness are required. A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a voltage-controlled semiconductor switch used to amplify and switch electronic signals. Power MOSFETs like the FDP86363-F085 sit in the power-discrete hierarchy as: power MOSFET -> discrete-semi -> power semiconductor -> discrete component. The PowerTrench process refers to onsemi's proprietary shielded-gate trench technology that reduces Rds(on) per unit silicon area, enabling high current handling in compact through-hole packages. Key features of the FDP86363-F085 include 2.8 mOhm typical Rds(on) at Vgs=10V, 80V drain-source breakdown voltage (V(BR)DSS), 110A continuous drain current at 25C case temperature, and an avalanche-rated single-pulse drain current of 240A. The TO-220AB package provides a low 0.5C/W junction-to-case thermal resistance, allowing direct heatsink mounting for high-power applications. The device is qualified to AEC-Q101 for automotive use, making it suitable for 12V/24V vehicle electrical systems. Typical applications include 12V/24V automotive ECU power switching, brushed and brushless DC motor drivers, synchronous-rectifier stages in isolated DC-DC converters, solenoid and relay drivers, and industrial high-current load switches. The combination of low Rds(on), high peak current handling, and AEC-Q101 qualification makes it ideal for harsh-environment automotive subsystems such as electric power steering, transmission control, and battery management. When designing with the FDP86363-F085, ensure the gate-drive voltage reaches 10V for advertised Rds(on) performance. Use a gate resistor (10-100 ohm) to limit ringing, and provide proper heatsinking for continuous high-power operation. The avalanche rating requires careful snubber design in inductive switching applications. This page synthesizes distributor pricing, drop-in same-package and cross-brand alternatives, and practical design notes not found in the manufacturer datasheet. Specifications verified against the onsemi FDP86363-F085 datasheet Rev. 4 (May-2024).
FDS4410A - 30V 10A N-Ch Logic-Level MOSFET | Fairchild
The Fairchild Semiconductor (onsemi) FDS4410A is a single N-channel logic-level PowerTrench MOSFET rated 30 V drain-source voltage and 10 A continuous drain current, housed in an 8-pin SOIC surface-mount package. A power MOSFET is a voltage-controlled semiconductor switch used throughout the power management hierarchy (MOSFET -> discrete transistor -> semiconductor). Logic-level MOSFETs are a subclass specified to turn fully on at 4.5 V gate drive, allowing direct interface with 3.3 V and 5 V microcontroller GPIOs, PWM controllers, and battery-management ICs without a dedicated gate-driver stage. Key features of the FDS4410A include Fairchild's advanced PowerTrench process technology, engineered specifically to minimize on-state resistance while maintaining superior switching performance. The logic-level gate threshold permits low-voltage drive, and the 30 V rating suits low-voltage, battery-powered systems. The compact SOIC-8 footprint provides a well-understood thermal and land-pattern standard for surface-mount assembly. Technically, the PowerTrench trench-FET structure achieves low RDS(on) through dense vertical trench gating, reducing conduction losses in high-current paths. Because the device is optimized for low-voltage switching, gate charge is modest, supporting efficient PWM operation in synchronous topologies and load-switch circuits. Per the manufacturer description, the process has been especially tailored to minimize on-state resistance, which directly lowers I^2R losses at the 10 A rated current. Typical applications include low-voltage and battery-powered systems, DC load switches, low-side switching in portable equipment, and power-path management in consumer and industrial boards. Design consideration: verify RDS(on) at the actual gate-drive voltage in your circuit, since on-resistance rises at reduced VGS, and budget PCB copper on the drain/source pads for thermal dissipation (DigiKey lists 2.5 W (Ta) for the package family). This page synthesizes distributor pricing context, cross-referenced drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
FDS6575 - P-Channel -20V 10A PowerTrench MOSFET | onsemi
The onsemi (Fairchild Semiconductor) FDS6575 is a P-channel, 2.5V-specified PowerTrench MOSFET rated at -20V drain-source voltage and -10A continuous drain current, with a maximum on-resistance of 13 mOhm at VGS = -4.5V, housed in an 8-pin SOIC (SO-8) surface-mount package. It is the rugged-gate version of Fairchild's advanced PowerTrench process, optimized for power management applications with a wide gate drive range of 2.5V to 8V. A P-channel power MOSFET is a voltage-controlled semiconductor switch in which a negative gate-to-source voltage creates a conductive channel between drain and source. Within the power management hierarchy (MOSFET -> discrete power semiconductor -> power management), P-channel devices are prized for high-side load switching because they can be driven directly from a low-side control signal without a charge pump or bootstrap supply, simplifying gate-drive circuitry versus N-channel high-side designs. Key features include low on-resistance for minimal conduction loss, low gate charge for fast, efficient switching in DC-DC converter and load-switch circuits, and the 2.5V-specified gate threshold that allows direct drive from logic-level controllers and battery rails. The rugged gate construction improves robustness against voltage transients, and the wide 2.5V-8V gate drive window covers battery-powered (1-2S Li-ion), 3.3V, and 5V logic environments. Technically, the PowerTrench trench-gate process achieves a low-RDS(on) x Qg figure of merit, reducing both conduction and switching losses. The 13 mOhm on-resistance at -4.5V gate drive yields an estimated conduction loss of about 1.3W at the full -10A rating, so adequate PCB copper is required. Typical applications include high-side load switches in battery-powered portable equipment, battery protection and reverse-polarity circuits, DC-DC converter power stages, hot-swap and power-path management in notebooks and industrial systems. Design consideration: because this is a 2.5V-specified part, verify that the minimum gate drive in your circuit keeps RDS(on) within the power budget; at very low VGS the on-resistance rises significantly. This page adds value beyond the datasheet by synthesizing drop-in alternatives, engineering design notes, comparison tables, and sourcing information in one place.
FDS6670A - 30V 13A N-Channel PowerTrench MOSFET | onsemi
The onsemi FDS6670A is an N-channel logic-level PowerTrench MOSFET rated for 30 V drain-source voltage and 13 A continuous drain current at 25 C ambient, packaged in an 8-pin SOIC (SO-8) surface-mount package with a power dissipation rating of 2.5 W (Ta). An N-channel power MOSFET is a voltage-controlled semiconductor switch in which current flows between drain and source terminals when a positive gate voltage is applied relative to the source. Within the power-management hierarchy, MOSFETs sit alongside IGBTs and relays as the primary switching elements of power converters, load switches, and motor-drive bridges, and small-signal MOSFETs such as the FDS6670A occupy the sub-30V, mid-current segment of that taxonomy. The defining feature of the FDS6670A is Fairchild (now onsemi) advanced PowerTrench process technology, which uses a trench-gate cell structure optimized to minimize on-state resistance while maintaining superior switching performance. Logic-level gate drive means the device turns on fully with a standard 4.5 V gate signal, allowing direct interface with 5 V microcontrollers and battery-management controllers without a dedicated gate-driver supply. Electrically, the combination of low Rds(on), 30 V blocking capability, and the thermally efficient SO-8 body-drain construction makes this device suited to fast-switching topologies where conduction and switching losses both matter. The source pins are bonded to the die with low-inductance wiring that preserves gate-loop integrity at high switching frequencies. Typical applications include low-voltage battery-powered systems, DC-DC converter primary and secondary switches, load switches in portable equipment, and motor-control half-bridges operating from 5-cell to 7-cell battery packs. Designers should provide a substantial PCB copper pour under the drain-connected pins, because the SO-8 package relies on board copper for heat extraction; thermal design margins at 2.5 W dissipation are tight at elevated ambient temperatures. This page adds distributor-sourced availability data, drop-in alternatives, and practical SO-8 thermal layout notes that are not consolidated in the manufacturer datasheet.
FDS8880 - 30V 11.6A N-Channel PowerTrench MOSFET | onsemi
The onsemi FDS8880 is an N-channel PowerTrench MOSFET rated at 30 V drain-source voltage, 11.6 A continuous drain current, with a low on-resistance of 10 mOhm (at VGS = 10 V) and 12 mOhm (at VGS = 4.5 V), housed in an 8-pin SOIC surface-mount package. An N-channel power MOSFET is a voltage-controlled semiconductor switch used to regulate or switch electrical power in a circuit. Within the power-management hierarchy, MOSFETs sit between gate drivers and the load, translating low-voltage control signals into high-current switching action. Power MOSFETs such as the FDS8880 are the workhorses of DC/DC converters, motor drives, and load-switch circuits. The FDS8880 was designed specifically to improve the overall efficiency of DC/DC converters using either synchronous or conventional switching PWM controllers. It is optimized for low gate charge, low rDS(on), and fast switching speed, using Fairchild (now onsemi) PowerTrench trench technology to achieve extremely low on-resistance in the compact 8-SOIC footprint. Key features include a 30 V VDS rating suitable for 12 V and 24 V intermediate bus rails, high power and current handling capability for its package class, and a 2.5 W power dissipation rating at 25 C ambient. The device is RoHS compliant. Typical applications include synchronous-rectifier and main-switch roles in step-down converters, point-of-load power supplies, and DC motor control circuits where low conduction loss matters. Design consideration: because the part is in Last Shipments status, new designs should qualify a second source early; also verify VGS drive level (4.5 V vs 10 V) since rDS(on) differs meaningfully between the two ratings. This page synthesizes distributor pricing, lifecycle status, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
FDS8884 - 30V 8.5A N-Channel PowerTrench MOSFET | onsemi
The onsemi FDS8884 is an N-Channel PowerTrench MOSFET rated 30V drain-source voltage, 8.5A continuous drain current, with a low 23 mOhm on-resistance, housed in an 8-pin SOIC surface-mount package. Originally introduced by Fairchild Semiconductor and now manufactured by onsemi, it targets DC/DC converter efficiency. An N-channel power MOSFET is a voltage-controlled semiconductor switch that conducts when a positive gate-source voltage is applied. Within the power management hierarchy, MOSFETs sit under discrete power semiconductors and serve as the primary switching elements in voltage regulators, motor drivers, and load switches. PowerTrench devices are onsemi's flagship trench-gate MOSFET technology, engineered to minimize conduction and switching losses simultaneously. The FDS8884's headline feature set includes low on-resistance of 23 mOhm, which reduces conduction losses (I^2 x RDS(on)); low gate charge, which reduces gate-drive losses at high switching frequencies; and fast switching speed, which shortens transition intervals in PWM converters. The device is rated for 2.5W power dissipation at TA in the 8-SOIC package. These characteristics make it especially well suited for synchronous buck converter applications where it can serve as the control FET or synchronous rectifier. Architecturally, PowerTrench technology uses a vertical trench-gate structure that packs more channel density per die area than planar designs, lowering RDS(on) x area figure-of-merit. The optimized charge balance also reduces Qgd, limiting Miller plateau duration and shoot-through risk in half-bridge topologies. Typical applications include synchronous and conventional PWM DC/DC converters, point-of-load power supplies, notebook and desktop VRM circuits, and general-purpose load switching in industrial and consumer electronics. Design consideration: verify gate drive voltage against the datasheet RDS(on) test condition, since on-resistance rises at reduced VGS; also ensure SOIC-8 thermal copper pour for dissipations approaching the 2.5W rating. This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
FDS9435A - 30V P-Channel PowerTrench MOSFET | onsemi
The onsemi FDS9435A is a 30V P-Channel PowerTrench MOSFET rated for 5.3A continuous drain current (Ta) and 2.5W power dissipation (Ta), housed in a surface-mount 8-SOIC package. It is a rugged-gate version of onsemi's advanced PowerTrench process, optimized for power management applications that require a wide gate-drive voltage range (4.5V to 25V). A P-Channel MOSFET (PMOS) is a type of metal-oxide-semiconductor field-effect transistor in which the channel is formed by holes rather than electrons. In the broader semiconductor taxonomy, it belongs to the MOSFET family, which itself sits under discrete semiconductors and power management devices. P-Channel MOSFETs are typically used for high-side load switching because the source is tied to the system supply and the device is turned on by pulling the gate below the source potential, simplifying gate-drive design when the system controller already has a low-voltage reference. Key features of the FDS9435A include a low on-resistance of 50 milliohms at VGS = 10V and 80 milliohms at VGS = 4.5V, plus the rugged-gate construction that withstands 4.5V to 25V gate drive. The PowerTrench cell architecture reduces Rds(on) per unit silicon area, and the 8-SOIC footprint allows standard surface-mount assembly. Together, these characteristics make the FDS9435A suitable for low-voltage DC load switching and small-signal power management where a rugged gate is required. The PowerTrench process uses a proprietary shielded-gate trench structure that minimizes cell pitch and reduces conduction losses versus older planar MOSFET generations. This translates into lower Rds(on) for the same die size, enabling higher efficiency in switching applications, or smaller PCB area for the same efficiency. The P-channel polarity is complementary to the more common N-channel MOSFET and simplifies circuit design in high-side switch topologies because the load can be returned to system ground. Typical applications include high-side load switches in notebook and desktop computing, USB power distribution, battery protection circuits in portable equipment, and general low-voltage DC-DC conversion. The wide VGS rating (4.5V to 25V) also makes it suitable for motor drive and solenoid switching where the gate driver voltage is independent of the system logic supply. When designing with this part, observe the 2.5W Ta power dissipation limit and provide adequate copper area on the PCB to keep the junction temperature within the rated maximum. The SO-8 footprint has a higher junction-to-ambient thermal resistance than larger packages (such as DPAK), so thermal vias or a copper pour are typically required for continuous high-current operation. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical PCB layout notes for engineers evaluating the FDS9435A as a high-side switch candidate.
FDV301N - 25V 220mA N-Channel Digital FET | onsemi | SOT-23
The onsemi FDV301N is a 25 V N-channel logic-level enhancement-mode MOSFET rated for 0.22 A continuous drain current (0.5 A peak) with RDS(on) of 4 ohm (typical) and 350 mW power dissipation, housed in a 3-pin SOT-23 surface-mount package. A digital FET, or logic-level MOSFET, is a small-signal field-effect transistor designed to switch fully on at the low gate-source voltages produced by microcontrollers, logic gates, and other digital ICs. Within the semiconductor hierarchy it sits under N-channel MOSFET -> small-signal MOSFET -> discrete power transistor -> Discrete & Power Modules. Unlike a bipolar digital transistor (which contains built-in base bias resistors), a digital FET requires no bias resistors at all, so a single device can replace several digital transistors that would otherwise need different bias-resistor values. Key differentiating features include a 25 V drain-source rating for low-voltage rail switching, a typical RDS(on) of 4 ohm that minimizes conduction losses, and onsemi's proprietary high-cell-density DMOS silicon process. The DMOS process is specifically tailored to minimize on-state resistance at low gate drive, which is the defining characteristic of the digital-FET class. Technically, the FDV301N is an enhancement-mode device: the channel is off at VGS = 0 V and turns on as gate voltage rises toward 2.7 V and beyond, where the datasheet characterizes RDS(on) around 5 ohm. Because the gate is insulated (MOS structure), gate drive current is negligible in steady state, allowing direct connection to GPIO pins with only a small series resistor for ESD/ring control. Typical applications include low-side load switching in portable and battery-powered equipment, GPIO fan and LED load control, level-agnostic logic interfacing where digital transistors previously dominated, and small relay or buzzer drivers in consumer and industrial boards. A key design consideration is power budget: at 220 mA and 4 ohm, conduction loss is roughly 0.19 W, which is Estimated: (I^2 x RDS(on), inputs 0.22 A and 4 ohm) approaching half of the 350 mW package limit, so verify worst-case VGS drive and ambient temperature. This page synthesizes verified distributor data, drop-in alternatives, and design notes not consolidated in the manufacturer datasheet alone. Pricing shown is representative as of 2026-09-14 and should be confirmed at checkout.
FESB16DT-E3/81 - 200V 16A Ultrafast Rectifier TO-263AB | Vishay
The Vishay General Semiconductor FESB16DT-E3/81 is an ultrafast plastic rectifier rated at 200 V reverse voltage and 16 A average rectified forward current, housed in a surface-mount TO-263AB (D2PAK) package. It features a glass-passivated chip junction, a typical reverse recovery time of 35 ns, and a maximum forward voltage of 975 mV at 16 A, targeting high-frequency switching applications. Key features include a 35 ns reverse recovery time, low switching losses, high forward surge capability, and a forward voltage of 975 mV at full 16 A load. The glass-passivated die construction ensures long-term stability against humidity and contaminants, while the J-STD-020 MSL-1 rating simplifies board-level handling. The FESB16DT-E3/81 belongs to the ultrafast rectifier family, a subset of discrete power diodes engineered for high-frequency operation. Within the broader component taxonomy, ultrafast rectifiers sit under rectifier diodes, which fall under discrete semiconductors. Their primary role is to convert AC to DC in switch-mode power supplies while minimizing the reverse-recovery losses that limit switching frequency in standard recovery rectifiers. At the architecture level, the FESB16DT-E3/81 employs a single-junction diffused silicon die with a glass-passivated surface that suppresses surface leakage and improves high-temperature stability. The 35 ns reverse recovery figure, combined with low stored charge, allows operation at switching frequencies from 50 kHz to over 200 kHz without the efficiency penalties that plague 60-Hz standard recovery parts. The TO-263AB (D2PAK) tab provides a low thermal resistance path for the dissipated power. Typical applications include switch-mode power supplies (SMPS), freewheeling diodes in motor drives, DC/DC converters, inverters, and uninterruptible power supplies. The 16 A current rating and 200 V blocking voltage cover most 48 V telecom bus, 24 V industrial, and low-voltage three-phase rectified topologies. When designing with this part, ensure that the heatsink tab receives adequate copper area to keep the junction temperature below 150 C under worst-case continuous forward current. The 35 ns reverse recovery is fast enough for hard-switched PFC and forward converters, but a snubber may be required in high-dv/dt bridge configurations. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. Sourcing data is current as of 2026-10-08, and all parametric figures are taken from Vishay's published specification.
FF1200R17IP5R - 1700V 1200A PrimePACK 2 IGBT Module | Infineon
The Infineon FF1200R17IP5R is a 1700 V, 1200 A half-bridge IGBT power module in the PrimePACK 2 chassis-mount footprint, built on Infineon's TRENCHSTOP IGBT5 technology with .XT die-top interconnection. The module integrates an Emitter Controlled 5 (EC5) free-wheeling diode and an NTC thermistor for thermal monitoring, and is qualified for an extended virtual-junction operating temperature Tvjop = 175 °C. Output current capability is increased by more than 25% in the same PrimePACK 2 footprint versus the prior IGBT4 generation, while sintered chip attachments and copper wire bonds deliver the highest power-cycling capability in the family. An IGBT module is a high-power, integrated switching subsystem that combines one or more insulated-gate bipolar transistors with anti-parallel diodes in a single, isolated package, allowing inverter and converter designers to build three-phase or half-bridge power stages with a single mechanical assembly. IGBT modules sit at the top of the power-electronics hierarchy: IGBT -> power semiconductor -> discrete semiconductor -> power electronics. The PrimePACK 2 family is targeted at medium-voltage, high-current industrial converters where conduction losses, short-circuit ruggedness, and long-term reliability under thermal cycling are the dominant design constraints. Key features of the FF1200R17IP5R include a 1700 V collector-emitter blocking rating, 1200 A nominal collector current at Tc = 25 °C (with derating at higher Tvj), low VCE(sat) typical of TRENCHSTOP IGBT5, and a screw-type power and signal terminal layout that has become the de-facto standard for 1200 A/1700 V class inverters. The integrated NTC thermistor enables closed-loop temperature monitoring, while the EC5 diode minimizes reverse-recovery losses in hard-switched topologies. The PrimePACK 2 footprint is mechanically compatible with prior-generation PrimePACK 1 modules, simplifying upgrades. Typical applications for the FF1200R17IP5R include high-power industrial drives, wind-power converters, solar central inverters, traction auxiliaries, and high-power UPS systems, where the module's combination of low conduction loss, high current density, and rugged thermal performance enables compact, high-efficiency converter designs in the megawatt class. When designing with this module, ensure the dc-link bus bars use low-inductance laminated construction to stay within the module's voltage overshoot limit at 1700 V, and torque the main power screws to the manufacturer-specified value. The NTC pin must be connected to the controller's analog front end and used for both thermal protection and derating of switching frequency.
FF1400R17T2P8 - 1700V 1400A XHP2 IGBT Module | Infineon
The Infineon FF1400R17T2P8 is a high-power half-bridge IGBT module in the XHP(TM) 2 package (AG-XHP2K17), rated 1700 V collector-emitter voltage (VCES) and 1400 A nominal collector current (IC nom) with 2800 A repetitive peak current (ICRM). It integrates TRENCHSTOP(TM) IGBT8 chip technology with emitter controlled 8 (EC8) freewheeling diodes and an integrated NTC thermistor for temperature monitoring. An IGBT module is a power semiconductor assembly combining insulated-gate bipolar transistors and freewheeling diodes in an electrically isolated housing. Within the power electronics hierarchy, IGBT modules occupy the level between discrete IGBTs and complete power stacks, serving as the switching core of voltage source inverters. They translate low-voltage gate control signals into multi-hundred-kilowatt power conversion, making them foundational components in industrial drives, traction, and renewable energy converters. Key features include the half-bridge topology, which simplifies inverter leg design and reduces busbar complexity; a low-inductance XHP 2 housing that minimizes parasitic inductance and voltage overshoot during fast switching; and a maximum junction temperature of 175 C, enabling high power density designs. The EC8 diodes exhibit soft, fast reverse recovery, reducing EMI and turn-off losses in the freewheeling path. Technically, the TRENCHSTOP IGBT8 generation reduces both conduction and switching losses versus prior generations, supporting higher efficiency and switching frequency in multi-megawatt converters. The internal module layout is optimized for symmetrical current paths and low stray inductance, while the NTC provides a linear temperature signal for protection and monitoring circuits. Typical applications include wind turbine converters, medium-voltage drives, rail traction converters, and high-power industrial inverters, where the 1700 V class supports DC-link voltages around 1000-1100 V. Design consideration: use a low-inductance, symmetrical DC-link busbar and a gate driver with sufficient peak current; liquid or forced-air cooling must keep the junction within the 175 C limit. Prices cited are as of 2026-09-11. This page synthesizes manufacturer datasheet data, distributor availability, and practical design guidance not found on standard distributor listing pages.
FF2000R17T2P8 - 1700V 2000A XHP2 Half-Bridge IGBT | Infineon
The Infineon FF2000R17T2P8 is a high-power 1700 V, 2000 A half-bridge IGBT module built on the XHP 2 (XHPTM2) low-inductive package platform, integrating a TRENCHSTOP IGBT8 trench field-stop chipset with an emitter controlled 8 (EC8) soft-recovery diode and an integrated NTC temperature sensor. An IGBT (Insulated Gate Bipolar Transistor) module is a power semiconductor assembly that combines the MOSFET-like gate-drive simplicity of the insulated gate with the low on-state conduction losses of bipolar conduction. Within the power electronics hierarchy (IGBT module -> power semiconductor -> power conversion system), modules such as the FF2000R17T2P8 form the switching core of inverters that convert DC to AC and vice versa in industrial drives, wind converters, and traction systems. Key features include the 1700 V collector-emitter rating, 2000 A nominal continuous collector current, half-bridge (2-in-1) topology, and XHP 2 construction with minimized internal stray inductance, which yields clean switching waveforms and reduced turn-off voltage overshoot. The IGBT8 die delivers low VCE(sat) and switching losses, while the EC8 diode provides soft recovery that lowers EMI stress. Short-circuit robustness and the onboard NTC support reliable protection and thermal monitoring. Technically, the trench field-stop structure improves the trade-off between conduction and switching losses, enabling higher efficiency and greater power density than prior chip generations. The scalable XHP 2 multi-package housing simplifies paralleling and platform-level design reuse across a wide power range. Typical applications include wind turbine full-converter systems, medium-voltage and large industrial motor drives, traction inverters, and high-power industrial power supplies, where efficiency, current density, and field reliability dominate the design. Design consideration: gate-drive and thermal design dominate success. Provide adequate driver peak current and galvanic isolation, size the heatsink for module dissipation, and minimize DC-link stray inductance (adding snubbers where needed) to keep turn-off overshoot within the 1700 V rating. This page synthesizes distributor sourcing data, drop-in alternative analysis, and practical high-power design notes not found in the Infineon datasheet; pricing references are as of 2026-09-11 and should be confirmed for volume quotes.
FF450R12KE4 - 1200V 450A Half-Bridge IGBT Module | Infineon
The Infineon FF450R12KE4 is a 1200 V, 450 A half-bridge IGBT power module in the EconoDUAL 62 mm housing, built on TRENCHSTOP IGBT4 trench/field-stop technology with an Emitter Controlled diode. According to Infineon, it is listed at approximately $160.75 per unit with volume pricing from $135.46 to $160.75. An IGBT (Insulated Gate Bipolar Transistor) module combines multiple insulated-gate transistors and freewheeling diodes on an isolated substrate inside a rugged industrial package. IGBT modules occupy the middle of the power semiconductor hierarchy, bridging MOSFETs (lower voltage, higher frequency) and thyristors (highest power, lowest frequency). They are the workhorse switches of motor drives, solar inverters, and UPS systems above roughly 600 V and 100 A. Key features of the FF450R12KE4 include its 1200 V collector-emitter blocking voltage (VCES), 450 A continuous collector current rating, and the Emitter Controlled diode that reduces reverse-recovery losses and voltage overshoot during turn-on. The TRENCHSTOP IGBT4 generation delivers optimized switching behavior for frequency-controlled inverter drives, balancing conduction and switching losses. Technically, the trench/field-stop IGBT4 cell design lowers the saturation voltage for reduced conduction loss while the field-stop layer enables a soft tail current at turn-off, minimizing EMI stress on the inverter. The module supports operating temperatures up to 150 C and carries UL/CSA certification (UL1557 E83336), simplifying end-equipment safety approval. A variant with pre-applied thermal interface material (FF450R12KE4P) and an E-conformance version (FF450R12KE4_E) are available. Typical applications include frequency-controlled industrial inverter drives, solar string inverters, UPS power stages, welding equipment, and traction auxiliaries - anywhere a 690 V-class DC bus requires a robust half-bridge switching stage in the several-hundred-ampere class. Design consideration: verify short-circuit withstand time, gate-drive voltage margin, and DC-link busbar layout to limit parasitic inductance, which directly affects turn-off overshoot and snubber sizing. This page synthesizes distributor pricing, drop-in alternatives within the FF450R12 family, and practical design notes not consolidated in the manufacturer datasheet.
FF450R12KT4HOSA1 - 1200V 450A IGBT Module Half-Bridge | Infineon
The Infineon FF450R12KT4HOSA1 is a 62 mm C-series dual IGBT module that integrates a trench field-stop IGBT4 half-bridge and an Emitter Controlled diode in a chassis-mount package. It is rated for 1200 V collector-emitter voltage, 450 A nominal collector current, and 580 A peak (TC = 100°C, tp = 1 ms) switching capability with a total power dissipation of 2400 W. What is an IGBT module? An Insulated Gate Bipolar Transistor (IGBT) module is a high-power semiconductor switch that combines the high input impedance of a MOSFET gate with the low conduction loss of a bipolar transistor. A half-bridge IGBT module is two such switches in a totem-pole configuration with antiparallel diodes, used as the fundamental building block of voltage-source inverters. IGBT modules sit in the power-electronics hierarchy above discrete IGBTs and below complete inverter stacks, enabling motor drives, UPS systems, and renewable power conversion at the 100 kW to multi-MW scale. Key specifications include a low VCE(sat) of 1.75 V (typical, IC = 450 A, VGE = 15 V, TJ = 25°C) that minimizes conduction losses, a rugged short-circuit capability with SCWT of 10 µs at VCC = 720 V, and a wide operating junction temperature range of -40°C to +150°C. The module uses the well-known 62 mm C-series mechanical footprint with screw-mount power terminals and is also available with pre-applied Thermal Interface Material (TIM) for faster assembly. The device leverages TRENCHSTOP IGBT4 technology from Infineon, which combines a thin-wafer trench field-stop cell with a soft, fast-recovery Emitter Controlled 4 diode. This combination reduces switching losses by roughly 20% versus prior IGBT3 generations while maintaining low EMI through controlled di/dt and dv/dt. The positive temperature coefficient of VCE(sat) also enables easy paralleling for higher-current inverter stages. Typical applications include industrial frequency-controlled motor drives (vector and servo), solar central inverters, three-phase UPS systems, and industrial welding equipment. The 1200 V class is the industry sweet spot for 690 V AC line-connected drives and 1000–1100 V DC-link photovoltaic or battery systems. When designing with this module, ensure the DC-link voltage stays below 1200 V under all transient conditions including reverse-recovery spikes. Provide a low-inductance laminated busbar to control turn-off overshoot, and apply proper thermal paste (or use the TIM-equipped variant) to keep the baseplate-to-heatsink thermal resistance at the datasheet-published minimum. This module is UL/CSA certified under UL 1557 file E83336 for industrial equipment. This page synthesizes distributor pricing, half-bridge topology alternatives (Infineon PrimePACK and EconoDUAL equivalents), and practical DC-link design notes not found in the standalone manufacturer datasheet.
FF600R12ME4 - 1200V 600A Half-Bridge IGBT Module | Infineon
The Infineon FF600R12ME4 is an EconoDUAL3 1200 V, 600 A half-bridge IGBT power module built on TRENCHSTOP Trench/Fieldstop IGBT4 technology with an Emitter Controlled diode and integrated NTC temperature sensor. It is housed in the EconoDUAL3 chassis-mount module package with solder pin terminals, and a PressFIT-mount variation (FF600R12ME4C_B11) is also offered. An IGBT (Insulated Gate Bipolar Transistor) module is a power semiconductor assembly that combines multiple IGBT dies and freewheeling diodes on an isolated substrate within one thermally optimized housing. In the power-conversion hierarchy, it sits above discrete IGBTs and below complete intelligent power modules, forming the switching stage between a DC link and a motor, grid, or load in a power electronics system. Key features include a 1200 V collector-emitter blocking voltage suited to 690 V-class DC links, a 600 A nominal collector current, and Infineon IGBT4 trench/fieldstop cell technology that balances conduction losses (VCE,sat) against switching losses for hard-switched inverters. The Emitter Controlled diode provides soft recovery behavior that reduces turn-on switching stress on the IGBT, and the integrated NTC enables direct junction-side temperature monitoring for protection and derating logic. Technically, the half-bridge topology integrates a high-side and low-side IGBT-diode pair, minimizing stray inductance between switches. The fieldstop vertical structure yields a positive temperature coefficient of VCE,sat, supporting safe paralleling and robust short-circuit behavior as characterized in the Infineon datasheet. Typical applications include industrial variable-frequency drives, solar string inverters, energy storage converters, and welding or UPS power stages where 1200 V/600 A ratings are required. Design consideration: always verify the DC-link voltage headroom against the 1200 V rating including switching overshoot, and use a gate driver matched to IGBT4 parameters such as the Infineon 2SP0115T2 SCALE-2 driver series. This page synthesizes verified datasheet parameters, drop-in family alternatives, application guidance, and cross-reference notes not consolidated in the manufacturer datasheet.
FF800R12KF4 - 1200V 800A Dual IGBT Module | Infineon
The Infineon FF800R12KF4 is a high-power IGBT module rated at 1200V collector-emitter voltage and 800A continuous collector current in a dual-switch (half-bridge) configuration with integrated freewheeling diodes. Housed in a robust chassis-mount isolated-baseplate module package, it delivers up to 5000W power dissipation for demanding industrial power conversion systems. An IGBT (Insulated Gate Bipolar Transistor) module combines the high input impedance of a MOSFET with the low on-state voltage drop of a bipolar transistor. Within the power electronics hierarchy, IGBT modules are the core switching elements of inverters, converters, and motor drives, converting DC to AC and regulating power flow from kilowatt to megawatt scale. Key features include a 1200V VCES rating, 800A DC collector current, 5000W maximum power dissipation, and a 150C maximum junction temperature. The module integrates two IGBTs with anti-parallel fast-recovery diodes, enabling half-bridge topologies with low reverse-recovery losses. Its isolated baseplate provides safe mounting and effective heat extraction. Technically, the FF800R12KF4 utilizes Infineon trench-gate IGBT technology, which reduces VCE(sat) and switching losses for higher system efficiency. The low-inductance package design limits voltage overshoot during fast switching, and the module supports parallel operation for scalable higher-current designs. Typical applications include industrial motor drives, wind turbine converters, UPS systems, and welding equipment. The 1200V/800A class ratings make it well suited for high-power inverters and medium-voltage drive front ends. When designing with this module, provide proper gate drive circuitry (typically +15V/-15V), snubber networks to control switching transients, and adequate heatsinking to keep junction temperature within the 150C limit.
FGA25N120ANTD - 1200V 25A NPT Trench IGBT | onsemi (Fairchild)
The onsemi (formerly Fairchild Semiconductor) FGA25N120ANTD is a 1200 V, 25 A NPT (Non-Punch-Through) Trench IGBT housed in a TO-247-3 package, designed for high-voltage power-switching applications. It combines the high-input impedance of a MOSFET gate with the low conduction loss of a bipolar transistor, supporting continuous collector current up to 25 A at TC = 100 C and pulsed collector current up to 75 A. An IGBT (Insulated Gate Bipolar Transistor) is a three-terminal power semiconductor that sits hierarchically between a MOSFET and a bipolar power transistor. It is the workhorse device of medium- to high-voltage power conversion, used inside switch-mode power supplies, motor drives, induction heaters, welding inverters, and uninterruptible power systems. Compared to a MOSFET, an IGBT offers much lower conduction loss at 600-1700 V breakdown voltages, while compared to a bipolar transistor it requires only a small gate-drive current, making gate-drive design simple. Key features of the FGA25N120ANTD include a typical VCE(sat) of 2.0 V at IC = 25 A and TC = 25 C, positive temperature coefficient for easy paralleling, low switching loss with Eoff typically 0.96 mJ at IC = 25 A, high avalanche ruggedness, and zero gate-charge design. The trench gate structure combined with NPT technology yields a tight parameter distribution and robust short-circuit behavior. The FGA25N120ANTD is built on onsemi's proprietary NPT Trench process, which removes the buffer layer between the drift region and the P+ collector. This results in a square reverse-bias SOA, lower turn-off switching loss, and a positive temperature coefficient on VCE(sat) that simplifies parallel-operation thermal balancing. The robust body diode further supports inductive load switching. Typical applications include induction heating, microwave ovens, resonant/soft-switching converters, welding equipment, solar inverters, and general-purpose high-voltage inverters up to 1200 V bus. The device is well-suited for circuits running at switching frequencies from a few kHz up to about 40 kHz in hard-switched topologies and up to several hundred kHz in zero-voltage-switching (ZVS) topologies. When designing with this part, observe the maximum junction temperature of 150 C and ensure the switching frequency, gate resistor, and dv/dt snubber are tuned for the target topology. Adequate heatsinking is mandatory at high duty cycle; thermal resistance junction-to-case is typically 0.43 C/W. The anti-parallel diode should be used in bridge configurations, or an external fast-recovery diode added for hard-switched bridge legs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
FMMT717TA - 12V PNP 2.5A Low-Saturation BJT | Diodes Incorporated
The Diodes Incorporated FMMT717TA is a 12V PNP silicon low-saturation bipolar junction transistor (BJT) housed in a SOT-23-3 surface-mount package, designed for high-current switching and gate-driving applications. It delivers a continuous collector current of -2.5 A and supports peak pulse currents up to -10 A, with a power dissipation rating of 625 mW and a transition frequency of 110 MHz. The device features BVCEO > -12 V, a minimum DC current gain (hFE) of 300 at -100 mA / -2 V, and an exceptionally low saturation voltage of approximately -17 mV at -100 mA, with RCE(sat) of 72 mΩ at -2.5 A. A PNP bipolar junction transistor (BJT) is a three-terminal semiconductor device in which a p-doped emitter, n-doped base, and p-doped collector are arranged so that the device conducts when the base is pulled below the emitter potential. Low-saturation transistors are a specialized subcategory engineered to minimize VCE(sat) so that the device behaves like a near-ideal closed switch, reducing conduction losses in switching regulators, motor drivers, and high-side MOSFET gate drivers. The FMMT717 belongs to Diodes Incorporated's FMMT7xx SuperSOT family, which complements the NPN FMMT6xx series. Key differentiating features include a very low equivalent on-resistance of 72 mΩ at full rated current, hFE characterized up to -10 A for high current gain hold-up across the operating range, and a complementary NPN type (FMMT617) for symmetric half-bridge designs. The SOT-23-3 footprint provides a compact PCB area while supporting 625 mW continuous dissipation when properly land-patterned onto adequate copper pour. Typical applications include DC-DC converter synchronous rectification, MOSFET gate drivers for P-channel devices, power management load switches, battery chargers, motor control H-bridges, and low-voltage power management in industrial and consumer systems. The low VCE(sat) directly reduces conduction losses, which improves overall efficiency and thermal performance in switching topologies. Designers should note that this part is a low-VCEO (12 V) device, making it suitable only for sub-12 V bus systems; for 20 V or 30 V applications, the higher-VCEO FMMT720 should be selected. The complementary NPN FMMT617 shares the same SOT-23-3 footprint and enables compact half-bridge and push-pull topologies without layout rework. This page synthesizes distributor pricing, drop-in alternatives, application pairings, and practical design notes that extend beyond the manufacturer datasheet, supporting component selection, second-source qualification, and BOM risk reduction.