BSF134N10NJ3GXUMA2 - 100V OptiMOS N-Ch MOSFET 40A | Infineon
MPN: BSF134N10NJ3GXUMA2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.05 | $10.50 |
| 100 | $0.92 | $92.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.65 | $650.00 |
| 3,000 | $0.54 | $1,620.00 |
BSF134N10NJ3GXUMA2 Overview
A power MOSFET is a voltage-controlled semiconductor switch that uses an insulated gate to modulate current flow between drain and source terminals. N-channel MOSFETs like this one carry the majority of current carriers as electrons, providing lower on-resistance per unit silicon area than equivalent P-channel parts. The OptiMOS family belongs to the broader class of power-management discrete semiconductors, sharing the market with IGBTs (for very high voltages) and GaN FETs (for highest-frequency switching). Selecting the right MOSFET family balances RDS(on), switching charge (Qg, Qgd), thermal resistance, and package footprint.
Key features of the BSF134N10NJ3GXUMA2 include 2.2W power dissipation at ambient (Ta) and 43W at case (Tc), enabling high inrush handling in telecom and datacom bricks. The MG-WDSON-2 package exposes a top-side thermal pad that minimizes thermal resistance to PCB copper, allowing continuous operation near 40A with proper board layout. The ultra-low gate and output charges of the OptiMOS 100V process technology reduce driver losses and shrink dead-time, improving light-load efficiency in synchronous-rectifier positions.
Typical applications include voltage regulators in solar micro-inverters, 48V telecom and datacom bus converters, brushless DC (BLDC) motor drives for industrial automation, and high-density server power-supply unit (PSU) secondary-side synchronous rectification. The 100V rating also supports 24V/36V industrial battery systems with margin against inductive ringing. When designing with this device, place the gate-drive loop area to a minimum and keep the source-return path symmetric between driver ground and the Kelvin source pin (if exposed) to avoid spurious turn-on.
Drop-in alternatives for BSF134N10NJ3GXUMA2 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with BSF134N10NJ3GXUMA2 (same form factor and footprint) — differing in Package, Series, Technology.
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BSF134N10NJ3GXUMA1
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →BSF134N10NJ3GXUMA2 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Series | OptiMOS 100V |
| Transistor Type | N-Channel MOSFET |
| Drain-Source Voltage (VDS) | 100 V |
| Continuous Drain Current (ID) at Ta | 9 A |
| Continuous Drain Current (ID) at Tc | 40 A |
| Power Dissipation (PD) at Ta | 2.2 W |
| Power Dissipation (PD) at Tc | 43 W |
| Package | MG-WDSON-2 (surface mount, CanPAK-like) |
| Mounting Type | Surface Mount |
| Technology | OptiMOS 100V (low RDS(on), fast switching) |
| Polarity | N-Channel |
| Operating Mode | Enhancement-mode |
| RoHS Status | Compliant |
| Primary Applications | SMPS, motor control, solar, telecom/datacom DC-DC |
BSF134N10NJ3GXUMA2 Pin Configuration
| Pin 1 | Gate (G) — Gate drive input; controls channel conduction |
| Pin 2 | Source (S) — Source terminal; return path for load current |
| Pin 3 | Drain (D) / Thermal Pad — Drain terminal and exposed thermal pad for PCB copper heatsinking |
Safe Operating Area (estimated for BSF134N10NJ3GXUMA2)
Typical Applications
BSF134N10NJ3GXUMA2 is suitable for 6 applications: 48V Telecom Brick DC-DC Converters, Solar Micro-Inverter Output Stages, BLDC Motor Drive for Industrial Automation, Server PSU Secondary-Side Synchronous Rectification, 24V Industrial Battery Protection Switch, USB-PD and Quick-Charge Adapter Power Stages.
48V Telecom Brick DC-DC Converters
The BSF134N10NJ3GXUMA2 fits 48V telecom and datacom intermediate-bus converters where 100V VDS provides 2x margin above the 48V nominal input, absorbing inductive ringing from transformer leakage without avalanche breakdown. Its 40A Tc current rating covers high-power 600W to 1kW brick designs at full load, while the 9A Ta rating handles continuous operation on FR4 PCBs with 1 sq inch of copper. The OptiMOS low Qg/Qgd reduces driver-stage losses, improving light-load efficiency critical for Energy Star compliance. Place the device in synchronous-rectifier positions on the secondary side, paired with a UCC28950 or similar controller. Replace traditional D2PAK MOSFETs with this smaller package for higher power density.
Recommended
Solar Micro-Inverter Output Stages
In solar micro-inverter and power-optimizer topologies, the BSF134N10NJ3GXUMA2 serves in 100V-bus secondary-side rectification stages fed by panel-side boost converters. Its 100V rating handles open-circuit voltages of 60V to 80V PV panels under cold-condition overshoot with comfortable margin, while the 40A Tc rating supports continuous 2kW to 3kW micro-inverter output without thermal throttling. The OptiMOS 100V technology enables fast switching for high-frequency isolation transformer designs, shrinking magnetics cost. Designers should validate reverse-recovery losses against the chosen SiC or Si diode bridge, and pair with an isolation driver such as 1ED3124MC12HXUMA1 for safety barrier compliance.
Recommended
BLDC Motor Drive for Industrial Automation
BSF134N10NJ3GXUMA2 suits 24V to 48V BLDC motor drive designs in industrial automation where the 100V VDS rating handles back-EMF spikes during regenerative braking events. The 40A Tc current rating drives motors up to 1.5kW continuous, while the small MG-WDSON-2 footprint supports compact integrated motor-drive PCBs. OptiMOS low gate charge reduces controller-side driver power, important for battery-backed industrial equipment running on limited thermal budget. Use a three-phase bridge with IR2117STRPBF or IR2104STRPBF gate drivers, sized to the switching frequency chosen by the MCU. Confirm shoot-through protection is enabled in firmware to avoid catastrophic cross-conduction.
Recommended
Server PSU Secondary-Side Synchronous Rectification
In server PSU secondary-side synchronous rectification, BSF134N10NJ3GXUMA2 replaces traditional Schottky diode bridges, cutting conduction losses by half on the 12V output rail. The 100V rating is well above the rectified secondary voltage with margin for transient overshoot, and the 40A Tc rating supports continuous 400W to 600W PSU designs at 90+ percent efficiency targets. OptiMOS technology enables high switching frequency for the secondary-side MOSFET pair, shrinking magnetic filter components and reducing BOM cost. Designers should pair with a dedicated SR controller such as TEA2095 or implement adaptive gate timing in firmware.
Recommended
24V Industrial Battery Protection Switch
BSF134N10NJ3GXUMA2 acts as the high-side protection switch in 24V industrial battery management systems, where the 100V VDS rating easily covers 24V nominal and transient inductive spikes during load-dump events. The 40A Tc current rating handles continuous 1kW industrial loads, while the low RDSon of the OptiMOS 100V process minimizes voltage drop and heat generation across the protection FET. Designers should use a dedicated battery monitor IC such as TLE9015QU for cell balancing and over-current detection, paired with a gate driver capable of holding the FET off in fault conditions. Verify thermal performance under worst-case short-circuit pulse current.
Recommended
USB-PD and Quick-Charge Adapter Power Stages
BSF134N10NJ3GXUMA2 fits USB-PD and Quick-Charge adapters where the 100V VDS rating accommodates universal mains input after PFC front-end with margin, and the 40A Tc rating supports 100W to 140W adapter outputs. The compact MG-WDSON-2 package shrinks the power-stage footprint, allowing adapter form factors to shrink while delivering higher wattage. OptiMOS 100V enables high-frequency QR or DCM operation that simplifies EMI filtering and shrinks transformer size. Pair with an ICE3PCS03GXUMA1 or XDPP1148100BXUMA1 PFC plus QR combo controller for best-in-class efficiency and standby power.
Recommended
Recommended Products Summary
Engineering reference data for BSF134N10NJ3GXUMA2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BSF134N10NJ3GXUMA1 | IPP075N15N3GXKSA1 |
|---|---|---|---|
| Package | MG-WDSON-2 | MG-WDSON-2 - same | TO-220-3 - through-hole |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Drain-Source Voltage (VDS) | 100 V | 100 V | 150 V |
| Polarity | N-Channel | N-Channel | N-Channel |
| Technology Family | OptiMOS 100V | OptiMOS 100V | OptiMOS 3 150V |
| Typical Application | SMPS, motor control, telecom | SMPS, motor control, telecom | Higher-voltage PFC and primary-side SMPS |
Key Differentiators
- Compact surface-mount MG-WDSON-2 package (vs IPP075N15N3GXKSA1)
- 30 percent lower RDS(on) versus previous generation (vs Older 100V OptiMOS predecessors)
- OptiMOS 100V FOM optimized for synchronous rectification (vs Generic 100V MOSFETs)
Design Notes
Estimated: At 40A continuous drain current and RDS(on) of approximately 13 mOhm (per typical OptiMOS 100V behavior), conduction loss reaches about 21W. With proper PCB copper area to support 43W Tc rating, junction-to-ambient thermal resistance must be kept below 4 C/W to stay within the 175C junction limit. Use a minimum of 1 sq inch of 2oz copper on the drain tab and multiple thermal vias under the exposed pad. Engineers should re-measure thermal performance against actual PCB copper area for their specific layout.
Minimize the high-current loop between drain and source by placing input capacitors directly across drain-tab and source-pin return. Keep the gate-drive loop (gate resistor to driver output to gate to source-return) physically small to limit parasitic inductance. Add a 10kohm gate-to-source pull-down resistor to ensure the MOSFET stays off during controller power-up and brown-out conditions. Place a small RC snubber across drain-source if ringing exceeds 80 percent of VDS in high-frequency switching applications.
Do not assume the 40A Tc current rating applies in your specific PCB layout - the 9A Ta figure is the realistic continuous rating on a JEDEC reference board. Verify that your copper area supports the higher Tc current, or derate accordingly. Avoid using this part on 150V busses - the 100V VDS rating does not provide enough margin against inductive kick. Confirm gate-drive voltage is at least 10V for full enhancement; the OptiMOS RDSon rises sharply below 8V VGS.
Compliance Information
RoHS and REACH compliance per Infineon product page. Not AEC-Q100 qualified - select an automotive-grade OptiMOS variant if needed for vehicle applications.
