# FH8205A

**XIN FEI HONG** · MOSFETs · TSSOP-8

FH8205A from XIN FEI HONG, in a TSSOP-8. 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 | D | passive | Common drain of the two N-channel MOSFETs (D1 and D2 tied together internally, shorted to pin 8); VDS rating 20 V. |
| 2 | S1 | passive | Source of MOSFET 1, tied to pin 3; continuous drain current 5 A at TJ=25°C. |
| 3 | S1 | passive | Source of MOSFET 1, tied to pin 2; continuous drain current 5 A at TJ=25°C. |
| 4 | G1 | input | Gate of MOSFET 1; gate-source voltage limit ±12 V, threshold 0.5 V min to 1.2 V max at 250 µA. |
| 5 | G2 | input | Gate of MOSFET 2; gate-source voltage limit ±12 V, threshold 0.5 V min to 1.2 V max at 250 µA. |
| 6 | S2 | passive | Source of MOSFET 2, tied to pin 7; continuous drain current 5 A at TJ=25°C. |
| 7 | S2 | passive | Source of MOSFET 2, tied to pin 6; continuous drain current 5 A at TJ=25°C. |
| 8 | D | passive | Common drain of the two N-channel MOSFETs (D1 and D2 tied together internally, shorted to pin 1); VDS rating 20 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XIN FEI HONG |
| Package | TSSOP-8 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 8 |

## 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 Breakdown Voltage | BVDSS | 20 |  |  | V | VGS=0V ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS=20V,VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V,VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.5 | 0.7 | 1.2 | V | VDS=VGS,ID=250μA | 2 |
| Drain-Source On-State Resistance at VGS=4.5V | RDS(ON) |  | 20 | 27 | mΩ | VGS=4.5V, ID=4.5A | 2 |
| Drain-Source On-State Resistance at VGS=2.5V | RDS(ON) |  | 26 | 32 | mΩ | VGS=2.5V, ID=3.5A | 2 |
| Diode Forward Voltage | VSD |  |  | 1.2 | V | VGS=0V,IS=1.7A | 2 |
| Drain-Source Voltage | VDS |  |  | 20 | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Drain Current-Continuous | ID |  |  | 5 | A | TJ=25℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 20 | A | Pulsed; pulse width ≤300μs, duty cycle ≤2% (note b) | 1 |
| Drain-Source Diode Forward Current | IS |  |  | 2.5 | A |  | 1 |
| Maximum Power Dissipation | PD |  |  | 1.25 | W |  | 1 |
| Operating Junction and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  |  | 100 | ℃/W | Surface mounted on FR4 board, T<10 sec (note a) | 1 |

## CAD (KiCad official)

- Symbol: `FH8205A`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `fh8205a-etched.step` / `fh8205a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fh8205a.step` / `fh8205a.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/8588946147813830656) (6 pp, sha256 `4e3f002002284409`, 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/fh8205a-datasheet.pdf)