# AO4884

**UMW** · MOSFETs · SOP-8

AO4884 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 | S1 | passive | Source terminal of N-channel MOSFET 1; the pinning table assigns pins 1 and 3 to SOURCE (S1, S2). |
| 2 | G1 | input | Gate terminal of N-channel MOSFET 1; the pinning table assigns pins 2 and 4 to GATE (G1, G2). |
| 3 | S2 | passive | Source terminal of N-channel MOSFET 2; the pinning table assigns pins 1 and 3 to SOURCE (S1, S2). |
| 4 | G2 | input | Gate terminal of N-channel MOSFET 2; the pinning table assigns pins 2 and 4 to GATE (G1, G2). |
| 5 | D2 | passive | Drain terminal of the MOSFET pair; the pinning table assigns pins 5 to 8 to DRAIN (D1, D2), with the per-pin D1/D2 mapping not stated explicitly. |
| 6 | D2 | passive | Drain terminal of the MOSFET pair; the pinning table assigns pins 5 to 8 to DRAIN (D1, D2), with the per-pin D1/D2 mapping not stated explicitly. |
| 7 | D1 | passive | Drain terminal of the MOSFET pair; the pinning table assigns pins 5 to 8 to DRAIN (D1, D2), with the per-pin D1/D2 mapping not stated explicitly. |
| 8 | D1 | passive | Drain terminal of the MOSFET pair; the pinning table assigns pins 5 to 8 to DRAIN (D1, D2), with the per-pin D1/D2 mapping not stated explicitly. |

## 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 Breakdown Voltage | BVDSS | 40 |  |  | V | ID=250µA, VGS=0V | 3 |
| Gate-Body leakage current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±20V | 3 |
| Gate Threshold Voltage | VGS(th) | 1.2 | 1.7 | 2.5 | V | VDS=VGS, ID=250μA | 3 |
| On state drain current | ID(ON) | 50 |  |  | A | VGS=10V, VDS=5V | 3 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 13 | mΩ | VGS=10V | 1 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 16 | mΩ | VGS=4.5V | 1 |
| Forward Transconductance | gFS |  | 27.2 |  | S | VDS=5V, ID=10A | 3 |
| Diode Forward Voltage | VSD |  | 0.7 | 1 | V | IS=1A, VGS=0V | 3 |
| Input Capacitance | Ciss | 1200 | 1500 | 1950 | pF | VGS=0V, VDS=20V, f=1MHz | 3 |
| Output Capacitance | Coss | 150 | 215 | 280 | pF | VGS=0V, VDS=20V, f=1MHz | 3 |
| Reverse Transfer Capacitance | Crss | 80 | 135 | 190 | pF | VGS=0V, VDS=20V, f=1MHz | 3 |
| Gate resistance | Rg | 1.5 | 3.5 | 5.3 | Ω | VGS=0V, VDS=0V, f=1MHz | 3 |
| Drain-Source Voltage | VDS |  |  | 40 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 10 | A | TA=25°C | 1 |
| Continuous Drain Current | ID |  |  | 8 | A | TA=70°C | 1 |
| Pulsed Drain Current | IDM |  |  | 50 | A |  | 1 |
| Avalanche Current | IAS, IAR |  |  | 35 | A |  | 1 |
| Avalanche energy | EAS, EAR |  |  | 61 | mJ | L=0.1mH | 1 |
| Power Dissipation | PD |  |  | 2 | W | TA=25°C | 1 |
| Power Dissipation | PD |  |  | 1.3 | W | TA=70°C | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Maximum Junction-to-Ambient (thermal resistance) | RθJA |  | 48 | 62.5 | °C/W | t ≤ 10s | 2 |
| Maximum Junction-to-Ambient (thermal resistance) | RθJA |  | 74 | 90 | °C/W | Steady-State | 2 |
| Maximum Junction-to-Lead (thermal resistance) | RθJL |  | 32 | 40 | °C/W | Steady-State | 2 |

## CAD (KiCad official)

- Symbol: `AO4884`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ao4884-etched.step` / `ao4884-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4884.step` / `ao4884.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/8755875221150941184) (11 pp, sha256 `bf40a91f9b48050f`, retrieved 2026-10-09, 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/ao4884-datasheet.pdf)