# FH3419A

**XIN FEI HONG** · MOSFETs · SOT-23-3L

FH3419A from XIN FEI HONG, in a SOT-23-3L. 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; drive with VGS up to ±25V maximum, logic-level compatible, with VGS(th) of -1.0V min to -1.9V typ at ID = -250µA. |
| 2 | S | passive | Source of the P-channel MOSFET; continuous drain current ID is -6.5A at TJ = 150°C and body-diode forward current IS is -3.2A. |
| 3 | D | passive | Drain; VDS is rated -30V maximum, with continuous ID of -6.5A and pulsed IDM of -26A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XIN FEI HONG |
| Package | SOT-23-3L |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate-Source Voltage | VGS | -25 |  | 25 | V |  | 1 |
| Drain-Source Voltage | VDS |  |  | -30 | V |  | 1 |
| Continuous Drain Current | ID |  |  | -6.5 | A | TJ = 150°C | 1 |
| Pulsed Drain Current | IDM |  |  | -26 | A |  | 1 |
| Power Dissipation | PD |  |  | 1.25 | W |  | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient | RthJA |  |  | 96 | °C/W | Note 1: mounted on FR4 board, t ≤ 5 sec | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -30 |  |  | V | VGS = 0V, ID = -250µA | 2 |
| Gate Threshold Voltage | VGS(th) | -1 | -1.9 |  | V | VDS = VGS, ID = -250µA | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VDS = 0V, VGS = ±25V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | µA | VDS = -30V, VGS = 0V | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 15 | 19 | mΩ | VGS = -10V, ID = -4.0A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 19 | 26 | mΩ | VGS = -4.5V, ID = -4.0A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 18 | 25 | mΩ | VGS = -5.0V, ID = -1.0A | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS = 0V, IS = -1.0A | 2 |
| Diode Forward Current | IS |  |  | -3.2 | A | Note 1 | 2 |

## CAD (KiCad official)

- Symbol: `FH3419A`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `fh3419a-etched.step` / `fh3419a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fh3419a.step` / `fh3419a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XIN FEI HONG datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588946246518386688) (4 pp, sha256 `7e1e7441d914d990`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/fh3419a-datasheet.pdf)