# FH8902K

**鑫飞宏** · IC · SOT-23-6

FH8902K from 鑫飞宏, in a SOT-23-6. 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 | S1 | passive | Source of MOSFET 1 (N-channel, VDS 30 V, ID 5 A continuous). |
| 2 | D1/D2 | passive | Common drain of MOSFET 1 and MOSFET 2, internally connected to pin 5 (VDS 30 V, ID 5 A, IDM 20 A pulsed). |
| 3 | S2 | passive | Source of MOSFET 2 (N-channel, VDS 30 V, ID 5 A continuous). |
| 4 | G2 | input | Gate of MOSFET 2, VGS max ±20 V, threshold 1.0 to 1.9 V at 250 μA. |
| 5 | D1/D2 | passive | Common drain of MOSFET 1 and MOSFET 2, internally connected to pin 2 (VDS 30 V, ID 5 A, IDM 20 A pulsed). |
| 6 | G1 | input | Gate of MOSFET 1, VGS max ±20 V, threshold 1.0 to 1.9 V at 250 μA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | 鑫飞宏 |
| Package | SOT-23-6 |
| Category |  |
| Pins | 6 |

## 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-Source Voltage | VDS |  |  | 30 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Gate-Drain Voltage | VGD | -20 |  | 20 | V |  | 1 |
| Drain Current-Continuous | ID |  |  | 5 | A | @ TJ=25℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 20 | A | Pulsed (note b: pulse width ≤300μs, duty cycle ≤2%) | 1 |
| Drain-Source Diode Forward Current | IS |  |  | 2.5 | A |  | 1 |
| Maximum Power Dissipation | PD |  |  | 1.25 | W | Note a: surface mounted on FR4 board, T<10 sec | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  |  | 98 | ℃/W | Note a: surface mounted on FR4 board, T<10 sec | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 |  |  | V | VGS=0V ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS=30V,VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 1 | 1.5 | 1.9 | V | VDS=VGS, ID=250μA | 2 |
| Drain-Source On-State Resistance | RDS(ON) |  | 16 | 24 | mΩ | VGS=10V, ID=4.5A | 2 |
| Drain-Source On-State Resistance | RDS(ON) |  | 20 | 28 | mΩ | VGS=4.5V, ID=3.5A | 2 |
| Diode Forward Voltage | VSD |  |  | 1.2 | V | VGS=0V,IS=2A | 2 |

## CAD (KiCad official)

- Symbol: `FH8902K`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `fh8902k-etched.step` / `fh8902k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fh8902k.step` / `fh8902k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [鑫飞宏 datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603345652382244864) (6 pp, sha256 `495bfcbf5609af03`, retrieved 2026-10-17, 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/fh8902k-datasheet.pdf)