# IRFB4137PBF

**Infineon Technologies** · MOSFETs · TO-220

IRFB4137PBF from Infineon Technologies, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | G | input | Gate. Insulated MOSFET control terminal; drives channel enhancement. VGS(max) = ±20V, VGS(th) = 3.0-5.0V, RG typ. 1.3Ω, Ciss typ. 5168pF. Total gate charge Qg typ. 83nC at VGS=10V, ID=24A, VDS=150V. |
| 2 | D | passive | Drain. High-side channel terminal and body-diode cathode; also electrically connected to the TO-220 metal tab. VDSS = 300V, ID = 38A @ TC=25°C (27A @ TC=100°C), IDM pulsed = 152A, RDS(on) typ. 56 mΩ / max 69 mΩ at VGS=10V, ID=24A. |
| 3 | S | passive | Source. Low-side channel terminal, body-diode anode and reference for VGS. Continuous source (body-diode) current IS = 38A, ISM = 152A pulsed, VSD max 1.3V at IS=24A, VGS=0V; trr typ. 302ns, Qrr typ. 1739nC at TJ=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | TO-220 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `IRFB4137PbF`

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Continuous Drain Current (TC = 25°C) | ID |  |  | 38 | A | TC = 25°C, VGS @ 10V | 1 |
| Continuous Drain Current (TC = 100°C) | ID |  |  | 27 | A | TC = 100°C, VGS @ 10V | 1 |
| Pulsed Drain Current | IDM |  |  | 152 | A |  | 1 |
| Maximum Power Dissipation | PD |  |  | 341 | W | TC = 25°C | 1 |
| Linear Derating Factor |  |  |  | 2.3 | W/°C |  | 1 |
| Gate-to-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Peak Diode Recovery dv/dt | dv/dt |  |  | 8.9 | V/ns |  | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 175 | °C |  | 1 |
| Soldering Temperature |  |  |  | 300 | °C | for 10 seconds (1.6mm from case) | 1 |
| Mounting Torque |  |  |  | 10 | lbf·in | 6-32 or M3 screw | 1 |
| Mounting Torque |  |  |  | 1.1 | N·m | 6-32 or M3 screw | 1 |
| Single Pulse Avalanche Energy (Thermally limited) | EAS |  |  | 414 | mJ | Thermally limited, single pulse | 1 |
| Junction-to-Case Thermal Resistance | RθJC |  |  | 0.44 | °C/W | Junction-to-Case | 1 |
| Case-to-Sink Thermal Resistance (flat greased surface) | RθCS |  | 0.5 |  | °C/W | Case-to-Sink, flat greased surface | 1 |
| Junction-to-Ambient Thermal Resistance | RθJA |  |  | 62 | °C/W | Junction-to-Ambient | 1 |
| Drain-to-Source Breakdown Voltage | V(BR)DSS | 300 |  |  | V | VGS = 0V, ID = 250µA | 2 |
| Static Drain-to-Source On-Resistance | RDS(on) |  | 56 | 69 | mΩ | VGS = 10V, ID = 24A | 2 |
| Gate Threshold Voltage | VGS(th) | 3 |  | 5 | V | VDS = VGS, ID = 250µA | 2 |
| Drain-to-Source Leakage Current | IDSS |  |  | 20 | µA | VDS = 300 V, VGS = 0V | 2 |
| Drain-to-Source Leakage Current (TJ = 125°C) | IDSS |  |  | 250 | µA | VDS = 300V, VGS = 0V, TJ = 125°C | 2 |
| Gate-to-Source Forward Leakage | IGSS |  |  | 100 | nA | VGS = 20V | 2 |
| Gate-to-Source Reverse Leakage |  | -100 |  |  | nA | VGS = -20V | 2 |
| Forward Transconductance | gfs | 45 |  |  | S | VDS = 50V, ID = 24A | 2 |
| Total Gate Charge | Qg |  | 83 | 125 | nC | ID = 24A | 2 |
| Gate-to-Source Charge | Qgs |  | 28 | 42 | nC | VDS = 150V | 2 |
| Gate-to-Drain Charge | Qgd |  | 26 | 39 | nC | VGS = 10V | 2 |
| Continuous Source Current (Body Diode) | IS |  |  | 38 | A |  | 2 |
| Pulsed Source Current (Body Diode) | ISM |  |  | 152 | A |  | 2 |
| Diode Forward Voltage | VSD |  |  | 1.3 | V | TJ = 25°C, IS = 24A, VGS = 0V | 2 |

## CAD (KiCad official)

- Symbol: `IRFB4137PBF`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `irfb4137pbf-etched.step` / `irfb4137pbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irfb4137pbf.step` / `irfb4137pbf.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588889196454400000) (8 pp, sha256 `586be72f326b411c`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/irfb4137pbf-datasheet.pdf)