# XR4953A

**XNRUSEMI** · MOSFETs · SOP-8

XR4953A from XNRUSEMI, 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 of P-channel MOSFET 1; the device is rated for VDS of -30 V and continuous drain current of -5.3 A at TA=25℃. |
| 2 | G1 | input | Gate of P-channel MOSFET 1; gate-source voltage is limited to ±20 V with a threshold of -1.0 to -2.1 V. |
| 3 | S2 | passive | Source of P-channel MOSFET 2; the device is rated for VDS of -30 V and continuous drain current of -5.3 A at TA=25℃. |
| 4 | G2 | input | Gate of P-channel MOSFET 2; gate-source voltage is limited to ±20 V with a threshold of -1.0 to -2.1 V. |
| 5 | D2 | passive | Drain of P-channel MOSFET 2, tied to pin 6; pulsed drain current is rated -20 A. |
| 6 | D2 | passive | Drain of P-channel MOSFET 2, tied to pin 5; pulsed drain current is rated -20 A. |
| 7 | D1 | passive | Drain of P-channel MOSFET 1, tied to pin 8; pulsed drain current is rated -20 A. |
| 8 | D1 | passive | Drain of P-channel MOSFET 1, tied to pin 7; pulsed drain current is rated -20 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XNRUSEMI |
| 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 |
| Continuous Drain Current | ID@TA=25℃ |  |  | -5.3 | A | TA=25℃, VGS @ 10V | 1 |
| Continuous Drain Current | ID@TA=70℃ |  |  | -4.3 | A | TA=70℃, VGS @ 10V | 1 |
| Pulsed Drain Current | IDM |  |  | -20 | A |  | 1 |
| Total Power Dissipation | PD@TA=25℃ |  |  | 2 | W | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-Ambient | RθJA |  |  | 100 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -30 |  |  | V | VGS = 0V, ID = -250µA | 2 |
| Gate-body Leakage current | lGSS | -100 |  | 100 | nA | VDS = 0V, VGS = ±20V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | μA | VDS = -30V, VGS = 0V | 2 |
| Gate-Threshold Voltage | VGS(th) | -1 | -1.5 | -2.1 | V | VDS = VGS, ID = -250µA | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 35 | 60 | mΩ | VGS = -10V, ID = -4.1A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 52 | 90 | mΩ | VGS = -4.5V, ID = -3A | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | IS = -1.7A, VGS = 0V | 2 |
| Continuous Source Current | IS |  |  | -5.3 | A |  | 2 |

## CAD (KiCad official)

- Symbol: `XR4953A`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `xr4953a-etched.step` / `xr4953a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `xr4953a.step` / `xr4953a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XNRUSEMI datasheet](docs/xr4953a-datasheet.pdf) (5 pp, sha256 `ca9816a126aec163`, 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/xr4953a-datasheet.pdf)