# NP2305MR

**NATLINEAR** · MOSFETs · SOT-23-3L

NP2305MR from NATLINEAR, in a SOT-23-3L. 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 | G | input | Gate of the P-channel MOSFET, with gate-source voltage limited to ±12 V and operation stated down to 1.8 V gate drive. |
| 2 | S | passive | Source of the P-channel MOSFET; the source diode forward current Is is rated at -1.25 A. |
| 3 | D | passive | Drain of the P-channel MOSFET, with drain-source voltage limited to -20 V and continuous drain current rated at -4 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NATLINEAR |
| Package | SOT-23-3L |
| 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 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 | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±12V | 2 |
| Gate threshold voltage | VGS(th) | -0.5 | -0.85 | -1.5 | V | VDS=VGS, ID=-250µA | 2 |
| Drain-source on-state resistance | RDS(ON) |  | 42 | 50 | mΩ | VGS=-4.5V, ID=-4.2A | 2 |
| Drain-source on-state resistance | RDS(ON) |  | 55 | 66 | mΩ | VGS=-2.5V, ID=-3A | 2 |
| Diode forward voltage | VSD |  | -0.81 | -1.2 | V | VGS=0V, Is=-1.25A | 2 |
| Drain-source voltage | VDS | -20 |  |  | V |  | 1 |
| Gate-source voltage | VGS | -12 |  | 12 | V |  | 1 |
| Drain current-continuous | ID | -4 |  |  | A | Tj=125℃; surface mounted on FR4 board, t≤10sec | 1 |
| Drain current-pulsed | IDM | -12 |  |  | A | pulse width≤300μs, duty≤2% | 1 |
| Drain-source diode forward current | Is | -1.25 |  |  | A |  | 1 |
| Maximum power dissipation | PD |  |  | 1.2 | W |  | 1 |
| Operating junction temperature range | Tj | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction-to-ambient | Rth JA |  | 100 |  | ℃/W |  | 2 |

## CAD (KiCad official)

- Symbol: `NP2305MR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3L (KiCad packages3D, STEP)
- 3D model files: `np2305mr-etched.step` / `np2305mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `np2305mr.step` / `np2305mr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NATLINEAR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838841445052416) (5 pp, sha256 `607ec2093f055113`, 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/np2305mr-datasheet.pdf)