# IRLB3034

**UMW** · MOSFETs · TO-220

IRLB3034 from UMW, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | G | input | Gate terminal; the gate-to-source voltage VGS is rated at ±20 V. |
| 2 | D | passive | Drain terminal; the drain-to-source breakdown voltage V(BR)DSS is 40 V and the continuous drain current is 195 A at TC=25°C (package limited). |
| 3 | S | passive | Source terminal; the continuous body-diode source current IS is 343 A at TC=25°C. |

## Key specifications

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

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-to-Source Breakdown Voltage | V(BR)DSS | 40 |  |  | V | ID=250µA, VGS=0V | 3 |
| Gate Threshold Voltage | VGS(th) | 1 |  | 2.5 | V | VDS=VGS, ID=250μA | 3 |
| Static Drain-to-Source On-Resistance | RDS(ON) |  | 1.4 | 1.7 | mΩ | VGS=10V, ID=195A | 3 |
| Static Drain-to-Source On-Resistance | RDS(ON) |  | 1.6 | 2 | mΩ | VGS=4.5V, ID=172A | 3 |
| Drain-to-Source Leakage Current | IDSS |  |  | 20 | µA | VDS=40V, VGS=0V | 3 |
| Drain-to-Source Leakage Current | IDSS |  |  | 250 | µA | VDS=40V, VGS=0V, TJ=125°C | 3 |
| Gate-to-Source Forward Leakage | IGSS |  |  | 100 | nA | VGS=20V | 3 |
| Gate-to-Source Reverse Leakage | IGSS |  |  | -100 | nA | VGS=-20V | 3 |
| Diode Forward Voltage | VSD |  | 1.3 | 1.7 | V | TJ=25°C, IS=195, VGS=0V | 4 |
| Continuous Drain Current (Silicon Limited) | ID |  |  | 343 | A | VGS=10V (Silicon Limited), TC=25°C | 1 |
| Continuous Drain Current (Silicon Limited) | ID |  |  | 243 | A | VGS=10V (Silicon Limited), TC=100°C | 1 |
| Continuous Drain Current (Package Limited) | ID |  |  | 195 | A | VGS=10V (Package Limited), TC=25°C | 1 |
| Pulsed Drain Current | IDM |  |  | 1372 | A |  | 1 |
| Maximum Power Dissipation | PD |  |  | 375 | W | TC=25°C | 1 |
| Linear Derating Factor |  |  |  | 2.5 | W/°C |  | 1 |
| Gate-to-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Peak Diode Recovery | dv/dt |  |  | 4.6 | V/ns |  | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 175 | °C |  | 1 |
| Soldering Temperature |  |  |  | 300 | °C | 10 seconds (1.6mm from case) | 1 |
| Mounting Torque |  |  |  | 10 | lbin | 6-32 or M3 screw | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 255 | mJ | Starting TJ=25°C, L=0.013mH, RG=25Ω, IAS=195A, VGS=10V | 2 |
| Junction-to-Case | RθJC |  |  | 0.4 | °C/W | Rθ measured at TJ approximately 90°C | 2 |
| Junction-to-Ambient | RθJA |  |  | 62 | °C/W |  | 2 |
| Case-to-Sink, Flat Greased Surface | RθCS |  | 0.5 |  | °C/W | Flat, Greased Surface | 2 |

## CAD (KiCad official)

- Symbol: `IRLB3034`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `irlb3034-etched.step` / `irlb3034-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `irlb3034.step` / `irlb3034.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8763509965053009920) (13 pp, sha256 `86e581b81a539f52`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/irlb3034-datasheet.pdf)