# 1N4001WS

**YFW** · Diodes - General Purpose · SOD-323

1N4001WS from YFW, in a SOD-323. 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 | Cathode | passive | Cathode terminal of the general-purpose rectifier diode, identified as pin 1 in the SOD-323 top view. |
| 2 | Anode | passive | Anode terminal of the general-purpose rectifier diode, identified as pin 2 in the SOD-323 top view. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | SOD-323 |
| Category | Diodes |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage | VR | 100 |  |  | V | IR= 100 uA | 1 |
| Forward voltage | VF1 |  |  | 0.715 | V | IF= 1mA | 1 |
| Forward voltage | VF2 |  |  | 0.855 | V | IF= 10 mA | 1 |
| Forward voltage | VF3 |  |  | 1 | V | IF= 50 mA | 1 |
| Forward voltage | VF4 |  |  | 1.25 | V | IF= 150 mA | 1 |
| Reverse voltage leakage current | IR1 |  |  | 1 | uA | VR= 75 V | 1 |
| Reverse voltage leakage current | IR2 |  |  | 25 | nA | VR=20 V | 1 |
| Junction capacitance | Cj |  |  | 2 | pF | VR= 0 V, f= 1 MHz | 1 |
| Reverse recovery time | trr |  |  | 4 | ns | IF=IR=10mA,Irr=0.1xIR, RL=100Ω | 1 |
| Reverse voltage (repetitive peak / working peak / DC blocking, grouped row) | VRM |  |  | 120 | V | Ta = 25℃ | 1 |
| RMS reverse voltage | VR(RMS) |  |  | 71 | V | Ta = 25℃ | 1 |
| Average rectified output current | IO |  |  | 150 | mA | Ta = 25℃ | 1 |
| Forward continuous current | IFM |  |  | 300 | mA | Ta = 25℃ | 1 |
| Peak forward surge current, t=1 us | IFSM |  |  | 2 | A | t=1us, Ta = 25℃ | 1 |
| Peak forward surge current, t=1 s | IFSM |  |  | 1 | A | t=1s, Ta = 25℃ | 1 |
| Power dissipation | Pd |  |  | 500 | mW | Ta = 25℃ | 1 |
| Thermal resistance, junction to ambient | RθJA |  |  | 250 | ℃/W |  | 1 |
| Junction temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage temperature range | Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `1N4001WS`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `1n4001ws-etched.step` / `1n4001ws-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1n4001ws.step` / `1n4001ws.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YFW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589834669522399232) (3 pp, sha256 `49bd732327fd21d7`, retrieved 2026-10-23, 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/1n4001ws-datasheet.pdf)