BSP125H6327XTSA1 - 600V 120mA N-Ch SIPMOS | SOT-223 | Infineon
MPN: BSP125H6327XTSA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.68 | $0.68 |
| 10 | $0.59 | $5.90 |
| 100 | $0.51 | $51.00 |
| 500 | $0.46 | $230.00 |
| 1,000 | $0.43 | $430.00 |
| 5,000 | $0.38 | $1,900.00 |
Drop-in alternatives for BSP125H6327XTSA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BSP130H6327XTSA1
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
BSP89H6327XTSA1
✅ Drop-In✓ In Stock
$0.39 / Unit
View Datasheet →BSR316PH6327XTSA1
✅ Drop-In✓ In Stock
$0.22 / Unit
View Datasheet →BSP125H6327XTSA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Part Number | BSP125H6327XTSA1 |
| Transistor Type | N-Channel MOSFET |
| Technology | SIPMOS (Small Signal Power MOSFET) |
| Drain-Source Voltage (VDS) | 600 V |
| Continuous Drain Current (ID) | 120 mA (Ta) |
| Power Dissipation (PD) | 1.8 W (Ta) |
| Package | PG-SOT223-4 (SOT-223-3 + tab) |
| Mounting Type | Surface Mount |
| Operating Temperature | -55C to +150C (TJ) |
| Configuration | Single |
| Channel Mode | Enhancement |
| RoHS Status | Compliant |
| MSL Level | 1 (Unlimited) |
| Qualification | Automotive / Industrial grade |
BSP125H6327XTSA1 Pin Configuration
| Pin 1 | GATE — Gate control input (logic-level compatible) |
| Pin 2 | DRAIN — Drain terminal (connected to load) |
| Pin 3 | SOURCE — Source terminal (typically ground) |
| Pin 4 | TAB (DRAIN) — Thermal tab internally connected to DRAIN for heatsinking via PCB copper |
Safe Operating Area (DC, Ta=25C, SOT-223 on minimum pad)
Typical Applications
BSP125H6327XTSA1 is suitable for 6 applications: Automotive LED Lighting Drivers, Relay Replacement and Solid-State Switching, Small Motor Control and Solenoid Drivers, Offline (Mains-Referenced) Control Circuits, Level Shifters and Signal Interface Switches, High-Side Load Switches in Industrial 24V/48V Systems.
Automotive LED Lighting Drivers
The BSP125H6327XTSA1 fits automotive interior and signaling LED driver circuits thanks to its 600 V drain-source rating (which tolerates load-dump transients on the 12 V bus) and 120 mA continuous drain current (sufficient for multiple LED strings). Placed as a low-side switch or PWM dimmer element between the LED cathode and ground, it provides fast switching for flicker-free dimming and benefits from the SOT-223 tab's 1.8 W dissipation capacity to handle continuous current without thermal shutdown. Unlike a SOT-23 alternative, the SOT-223 package enables operation across -40 to +125°C automotive ambient without derating below the LED chain's minimum drive current.
Recommended
Relay Replacement and Solid-State Switching
With its 600 V VDS and 120 mA ID, the BSP125H6327XTSA1 replaces electromechanical relays in low-current AC and DC switching applications such as thermostat controls, HVAC interface boards, and small appliance power stages. Configured as a low-side AC switch in series with a bridge rectifier load, it offers silent operation, no contact bounce, and unlimited mechanical life - critical for medical and instrumentation equipment. The 1.8 W power dissipation in SOT-223 supports continuous load currents up to ~100 mA without an external heatsink beyond the PCB tab copper pad.
Recommended
Small Motor Control and Solenoid Drivers
The BSP125H6327XTSA1 drives small DC motors, solenoids, and valve actuators in industrial automation and appliance controls at currents below 120 mA. Its fast switching enables PWM speed control with audible-noise reduction, while the 600 V breakdown provides immunity to inductive flyback spikes when paired with a flyback diode. In stepper motor driver low-side positions, the SOT-223 tab manages the 1.8 W dissipation budget comfortably for continuous-duty cycle below 70%, and Infineon's SIPMOS process provides consistent VGS(th) for predictable current-sharing in paralleled configurations.
Recommended
Offline (Mains-Referenced) Control Circuits
In offline switch-mode power supplies (SMPS) below 5 W output, the BSP125H6327XTSA1 serves as the primary-side start-up or auxiliary switch where its 600 V VDS comfortably exceeds the rectified 230 VAC peak (325 V). Placed in a high-side or low-side position with appropriate gate drive from a startup controller, it provides initial bias to the main controller IC before the auxiliary winding takes over. The 120 mA continuous current is sufficient for sub-2 W auxiliary rails in standby, while the SOT-223 footprint maintains the design's compact form factor.
Recommended
Level Shifters and Signal Interface Switches
The BSP125H6327XTSA1 is well-suited for level shifting between 3.3 V microcontrollers and 5 V/12 V peripherals in mixed-signal designs, providing clean logic-level translation with its low R_DS(on) and fast transition times. In audio routing or test equipment multiplexing applications, the MOSFET acts as a low-distortion analog switch for signals below its 600 V limit - effectively transparent for audio-band signals. The SOT-223 package simplifies PCB layout compared to DPAK while providing better thermal stability than SOT-23 in continuous signal-path applications.
Recommended
High-Side Load Switches in Industrial 24V/48V Systems
In industrial 24 V and 48 V bus architectures, the BSP125H6327XTSA1 functions as a high-side or low-side load switch for sensor power, indicator LEDs, and small actuator drivers. Its 600 V rating provides large transient safety margin beyond the bus voltage, useful for surge events and EFT immunity. The integrated SOT-223 tab enables up to 1.8 W dissipation, supporting continuous 100 mA loads in sensor-heater or LED-bar applications without thermal shutdown, and the part's automotive qualification translates to long-term reliability in industrial environments.
Recommended
Recommended Products Summary
Engineering reference data for BSP125H6327XTSA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BSP130H6327XTSA1 | BSP89H6327XTSA1 | BSR316PH6327XTSA1 |
|---|---|---|---|---|
| Package | PG-SOT223-4 (SOT-223) | PG-SOT223-4 (SOT-223) - same | PG-SOT223-4 (SOT-223) - same | PG-SOT223-4 (SOT-223) - same |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Drain-Source Voltage (VDS) | 600 V | 600 V (same class) | 240 V (-60%) | [DATA_NEEDED] (P-channel) |
| Channel Type | N-Channel | N-Channel | N-Channel | P-Channel |
| Continuous Drain Current (ID) | 120 mA | ~300 mA (similar class) | ~250 mA | ~600 mA |
| Power Dissipation (PD) | 1.8 W | 1.8 W (same) | 1.8 W (same) | 1.8 W (same) |
| Technology | SIPMOS (N-Channel) | SIPMOS | SIPMOS | SIPMOS |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS / MSL | RoHS / MSL-1 | RoHS / MSL-1 | RoHS / MSL-1 | RoHS / MSL-1 |
Key Differentiators
- 600 V VDS in a small SOT-223 footprint with full 1.8 W dissipation (vs BSP89H6327XTSA1 (240 V SOT-223))
- Higher 600 V rating than 2N7002-class small-signal MOSFETs (vs 2N7002 (SOT-23, 60 V))
- N-channel device for low-side switching vs P-channel complement (vs BSR316PH6327XTSA1 (P-channel SOT-223))
Design Notes
Estimated: At Ta=25°C on a minimum 100 mm² SOT-223 tab pad, the BSP125H6327XTSA1 supports up to 1.8 W dissipation, equivalent to ~120 mA at 15 V VDS in linear operation. For continuous switching at higher VDS or in ambient above 50°C, expand the copper pad to at least 200 mm² to keep theta_JA below 80°C/W. In pulse-mode applications the thermal mass allows short bursts above 1.8 W provided the average dissipation remains within SOA.
Place the BSP125H6327XTSA1 with its tab pad on the same net as the drain, and stitch the tab copper directly to a large pour for heat spreading. The gate trace should be kept short (<10 mm) and routed away from the drain to minimize Cgd-induced Miller coupling. A gate resistor of 10-100 Ω in series suppresses ringing, and a 100 kΩ pull-down to source ensures the MOSFET stays off during MCU reset.
Do not confuse SOT-223 (4 leads, with tab) pin numbering with SOT-23 (3 leads). The tab on BSP125H6327XTSA1 is internally bonded to the drain, so leaving it floating breaks the thermal path but does not affect the electrical drain. For high-voltage offline circuits, observe the drain-creepage distance of at least 4 mm on the PCB to avoid surface arcing above 400 V, and add a TVS diode across drain-source for inductive load protection.
Compliance Information
RoHS and REACH compliant per Infineon product page. AEC-Q100 qualified for automotive use. Lead-free and halogen-free per Infineon's green product declaration.
