# TNM01K20FX

**Shenzhen JingYang** · MOSFETs · SOT-523

TNM01K20FX from Shenzhen JingYang, in a SOT-523. 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 | MOSFET gate terminal; gate-source voltage is rated at ±10 V (VGSS). |
| 2 | SOURCE | passive | MOSFET source terminal of the N-channel enhancement device; the datasheet gives no separate limit for this pin beyond the absolute maximum ratings. |
| 3 | DRAIN | passive | MOSFET drain terminal; drain-source voltage is rated at 20 V (VDSS) and continuous drain current at 0.75 A at TA=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | SOT-523 |
| 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 | V(BR)DSS | 20 |  |  | V | VGS=0V，ID=250uA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | uA | VDS=16V，VGS=0V | 2 |
| Gate Threshold Voltage | VGS(TH) | 0.45 |  | 1.1 | V | VDS=VGS，IDS=250uA | 2 |
| Gate Leakage Current | IGSS | -10 |  | 10 | uA | VGS=±10V，VDS=0V | 2 |
| Drain-Source On-state Resistance | RDS(on) |  | 190 | 230 | mΩ | VGS=4.5V，ID=0.55A | 2 |
| Drain-Source On-state Resistance | RDS(on) |  | 234 | 305 | mΩ | VGS=2.5V，ID=0.45A | 2 |
| Drain-Source On-state Resistance | RDS(on) |  | 303 | 455 | mΩ | VGS=1.8V，ID=0.35A | 2 |
| Continuous Diode Forward Current | ISD |  |  | 3.5 | A | VG=VD=0V, Force Current | 2 |
| Diode Forward Voltage | VSD |  |  | 1.1 | V | ISD=0.35A，VGS=0V | 2 |
| Drain-Source Voltage | VDSS |  |  | 20 | V |  | 1 |
| Gate Source Voltage | VGSS | -10 |  | 10 | V |  | 1 |
| Drain Current (Continuous) | ID |  |  | 0.75 | A | TA=25°C | 1 |
| Drain Current (Continuous) | ID |  |  | 0.3 | A | TA=100°C | 1 |
| Drain Current (Pulse) | IDM |  |  | 1.8 | A |  | 1 |
| Power Dissipation | PD |  |  | 0.15 | W |  | 1 |
| Operating Temperature / Storage Temperature | TJ/TSTG | -55 |  | 155 | °C |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RθJA |  | 833 |  | °C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `TNM01K20FX`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tnm01k20fx-etched.step` / `tnm01k20fx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tnm01k20fx.step` / `tnm01k20fx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JingYang datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589837615135420416) (4 pp, sha256 `aef4efb4804cb993`, 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/tnm01k20fx-datasheet.pdf)