# NM2302B

**Shandong Jingdao Microelectronics** · MOSFETs · SOT-23

NM2302B from Shandong Jingdao Microelectronics, 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 N-channel MOSFET; the gate-source voltage is rated ±12 V (VGSS). |
| 2 | Drain | passive | Drain terminal of the N-channel MOSFET; rated 20 V drain-source voltage (VDSS) and 3 A continuous drain current (ID). |
| 3 | Source | passive | Source terminal of the N-channel MOSFET, the reference for the gate-source rating (±12 V) and the drain-source rating (20 V VDSS). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| 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 | VDSS |  |  | 20 | V |  | 1 |
| Gate-Source Voltage | VGSS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 3 | A | TA=25℃ | 1 |
| Continuous Drain Current | ID |  |  | 2.4 | A | TA=70℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 14 | A | Note 2: repetitive rating, pulse width limited by max junction temperature | 1 |
| Power Dissipation | PD |  |  | 0.7 | W |  | 1 |
| Operation Junction and Storage Temperature | Tj,Tstg | -55 |  | 150 | °C |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 20 |  |  | V | VGS=0V,ID=250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=20V,VGS=0V | 2 |
| Gate-Source Leakage Current (Forward) | IGSS |  |  | 100 | nA | VGS=12V,VDS=0V | 2 |
| Gate-Source Leakage Current (Reverse) | IGSS | -100 |  |  | nA | VGS=-12V,VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.5 | 0.7 | 1.1 | V | VDS=VGS,ID=250uA | 2 |
| Static Drain-Source On-State Resistance | RDS(ON) |  | 36 | 55 | mΩ | VGS=4.5V,ID=3A | 2 |
| Static Drain-Source On-State Resistance | RDS(ON) |  | 47 | 85 | mΩ | VGS=2.5V,ID=2A | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | 3 | A |  | 2 |
| Maximum Body-Diode Pulsed Current | ISM |  |  | 12 | A |  | 2 |

## CAD (KiCad official)

- Symbol: `NM2302B`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `nm2302b-etched.step` / `nm2302b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nm2302b.step` / `nm2302b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590891503277858816) (6 pp, sha256 `2a77ce5d1b6f5486`, 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/nm2302b-datasheet.pdf)