# AO4435A

**UMW** · MOSFETs · SOP-8

AO4435A from UMW, in a SOP-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 | S | passive | Source terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, VGS = ±20V, ID = -12A at TA = 25°C). |
| 2 | S | passive | Source terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, VGS = ±20V, ID = -12A at TA = 25°C). |
| 3 | S | passive | Source terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, VGS = ±20V, ID = -12A at TA = 25°C). |
| 4 | G | input | Gate terminal of the MOSFET, rated for gate-source voltage VGS = ±20V and specified for operation with gate voltages as low as 2.5V. |
| 5 | D | passive | Drain terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, ID = -12A at TA = 25°C). |
| 6 | D | passive | Drain terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, ID = -12A at TA = 25°C). |
| 7 | D | passive | Drain terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, ID = -12A at TA = 25°C). |
| 8 | D | passive | Drain terminal of the -30V P-channel MOSFET; the datasheet gives no pin-specific limit, so the device ratings apply (VDS = -30V, ID = -12A at TA = 25°C). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-8 |
| Category | Transistors/Thyristors |
| 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 Voltage | VDS | -30 |  |  | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current | ID | -12 |  |  | A | VGS=-10V, TA=25°C | 1 |
| Drain Current | ID | -10 |  |  | A | VGS=-10V, TA=70°C | 1 |
| Pulsed Drain Current | IDM | -50 |  |  | A | Pulse width limited by max. junction temperature (Note 1) | 1 |
| Total Power Dissipation | PD |  |  | 2.5 | W | TA=25°C | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Maximum Thermal Resistance, Junction-ambient | RthJA |  |  | 50 | °C/W | Surface mounted on 1 in² copper pad of FR4 board, t<10 sec (Note 3) | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -30 |  |  | V | ID=-250µA, VGS=0V | 2 |
| Gate-Source Leakage | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0V | 2 |

## CAD (KiCad official)

- Symbol: `AO4435A`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ao4435a-etched.step` / `ao4435a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4435a.step` / `ao4435a.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/8755873891648577536) (7 pp, sha256 `f2c69b474b55dc93`, retrieved 2026-10-17, 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/ao4435a-datasheet.pdf)