# YJL2312AQ

**Yangzhou Yangjie Elec Tech** · MOSFETs · SOT-23

YJL2312AQ from Yangzhou Yangjie Elec Tech, 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 | G | input | Gate; gate-source voltage limited to ±10 V, with threshold VGS(th) 0.45 V min, 0.62 V typ, 1.0 V max at ID=250 µA. |
| 2 | S | passive | Source; ground-side terminal of the N-channel MOSFET, with continuous drain current of 6.8 A at TA=25 °C. |
| 3 | D | passive | Drain; rated for VDS of 20 V, 6.8 A continuous at TA=25 °C and 27 A pulsed. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 |  |  | 20 | V |  | 1 |
| Gate-source voltage | VGS | -10 |  | 10 | V |  | 1 |
| Drain current | ID |  |  | 6.8 | A | TA=25℃ | 1 |
| Drain current | ID |  |  | 5.4 | A | TA=70℃ | 1 |
| Pulsed drain current | IDM |  |  | 27 | A |  | 1 |
| Total power dissipation | PD |  |  | 1.25 | W | TA=25℃ | 1 |
| Total power dissipation | PD |  |  | 0.8 | W | TA=70℃ | 1 |
| Thermal resistance junction-to-ambient | RθJA |  |  | 100 | ℃/ W | Mounted on 1 in 2 pad of 2oz copper (note B) | 1 |
| Junction and storage temperature range | TJ ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| 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 Current | IGSS | -100 |  | 100 | nA | VGS=±10V, VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 0.45 | 0.62 | 1 | V | VDS= VGS, ID=250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 13.5 | 18 | mΩ | VGS=4.5V, ID=6.8A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 17 | 22 | mΩ | VGS=2.5V, ID=3A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 22 | 39 | mΩ | VGS=1.8V, ID=2.5A | 2 |
| Diode Forward Voltage | VSD |  | 1.2 |  | V | IS=6.8A,VGS=0V | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | mounting surface of the drain pins. RθJC is guaranteed by design, while RθJA is determined by the board design. The maximum rating presented here is based on mounting on a 1 in 2 pad of 2oz copper. | 2 |

## CAD (KiCad official)

- Symbol: `YJL2312AQ`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `yjl2312aq-etched.step` / `yjl2312aq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yjl2312aq.step` / `yjl2312aq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838694741422080) (7 pp, sha256 `95170d33e307b64b`, 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/yjl2312aq-datasheet.pdf)