# YJL3404B

**Yangzhou Yangjie Elec Tech** · MOSFETs · SOT-23(TO-236)

YJL3404B from Yangzhou Yangjie Elec Tech, in a SOT-23(TO-236). 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; the gate-source voltage is rated at ±20 V maximum, with a typical threshold of 1.6 V (1 V min, 2.2 V max) at ID=250μA. |
| 2 | S | passive | Source; the continuous body-diode current is rated at 5.6 A maximum, and VSD is 1.2 V maximum at IS=5.6A. |
| 3 | D | passive | Drain; VDS is rated at 30 V maximum and the continuous drain current is 5.6 A at TA=25℃, with a pulsed rating of 40 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-23(TO-236) |
| 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 |  |  | 30 | V |  | 1 |
| Gate-source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Drain Current | ID |  |  | 5.6 | A | TA=25℃ | 1 |
| Drain Current | ID |  |  | 3.5 | A | TA=100℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 40 | A |  | 1 |
| Total Power Dissipation | PD |  |  | 1 | W | TA=25℃ | 1 |
| Total Power Dissipation | PD |  |  | 0.4 | W | TA=100℃ | 1 |
| Junction and Storage Temperature Range | TJ ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-to-Ambient | RθJA |  | 100 | 120 | ℃/W | Steady-State | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 |  |  | V | VGS= 0V, ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS=30V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 100 | μA | VDS=30V, VGS=0V, Tj=150℃ | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VGS= ±20V, VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 1 | 1.6 | 2.2 | V | VDS= VGS, ID=250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 18 | 24 | mΩ | VGS=10V, ID=5.6A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 33 | 43 | mΩ | VGS=4.5V, ID=5A | 2 |
| Diode Forward Voltage | VSD |  |  | 1.2 | V | IS=5.6A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | 5.6 | A |  | 2 |

## CAD (KiCad official)

- Symbol: `YJL3404B`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23(TO-236) (KiCad packages3D, STEP)
- 3D model files: `yjl3404b-etched.step` / `yjl3404b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yjl3404b.step` / `yjl3404b.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/8603384045976113152) (8 pp, sha256 `821777911e7484a9`, retrieved 2026-10-14, 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/yjl3404b-datasheet.pdf)