# PJM84PSA

**PJSEMI** · MOSFETs · SOT-23

PJM84PSA from PJSEMI, in a SOT-23. 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 | Gate | input | Gate terminal of the P-channel MOSFET; gate-source voltage is rated at ±20 V. |
| 2 | Source | passive | Source terminal of the P-channel MOSFET; the device is rated for a drain-source voltage of -50 V and continuous drain current of -0.13 A. |
| 3 | Drain | passive | Drain terminal of the P-channel MOSFET; continuous drain current is -0.13 A and pulsed drain current is -0.52 A (tp < 10 µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PJSEMI |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## 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 |  |  | 50 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current-Continuous | -ID |  |  | 0.13 | A |  | 1 |
| Drain Current-Pulsed | -IDM |  |  | 0.52 | A | tp<10μs | 1 |
| Maximum Power Dissipation | PD |  |  | 225 | mW |  | 1 |
| Junction Temperature | TJ |  |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  | 556 |  | °C/W | Surface mounted on FR4 board, t ≤ 10 sec (Note 2) | 1 |
| Drain-Source Breakdown Voltage | -V(BR)DSS | 50 |  |  | V | VGS=0V,ID=-250μA | 2 |
| Zero Gate Voltage Drain Current | -IDSS |  |  | 1 | μA | VDS=-50V,VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS | -10 |  | 10 | μA | VGS=±20V,VDS=0V | 2 |
| Gate Threshold Voltage | -VGS(th) | 0.9 | 1.6 | 2 | V | VDS=VGS,ID=-250μA | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 2.5 | 8 | Ω | VGS=-10V,ID=-0.1A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 3 | 10 | Ω | VGS=-5V,ID=-0.1A | 2 |
| Forward Transconductance | gFS | 0.05 |  |  | S | VDS=-25V,ID=-0.1A | 2 |
| Diode Forward Voltage | -VSD |  |  | 1.2 | V | VGS=0V,IS=-0.13A | 2 |
| Diode Forward Current | -IS |  |  | 0.13 | A |  | 2 |

## CAD (KiCad official)

- Symbol: `PJM84PSA`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pjm84psa-etched.step` / `pjm84psa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pjm84psa.step` / `pjm84psa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PJSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884476176289792) (6 pp, sha256 `06b9106baa14ec43`, retrieved 2026-10-19, 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/pjm84psa-datasheet.pdf)