# 1N4148WS_R1_00001

**PANJIT International** · Switching Diodes · SOD-323

1N4148WS_R1_00001 from PANJIT International, 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PANJIT International |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum forward voltage | VF |  |  | 0.715 | V | IF=1mA | 1 |
| Maximum forward voltage | VF |  |  | 0.855 | V | IF=10mA | 1 |
| Maximum forward voltage | VF |  |  | 1 | V | IF=50mA | 1 |
| Maximum forward voltage | VF |  |  | 1.25 | V | IF=150mA | 1 |
| Maximum dc reverse current | IR |  |  | 0.025 | A | VR=20V | 1 |
| Maximum dc reverse current | IR |  |  | 2.5 | A | VR=75V | 1 |
| Junction capacitance | CJ |  |  | 1.5 | pF | Measured at 1MHz and applied VR=0V | 1 |
| Maximum reverse recovery time | TRR |  |  | 4 | ns | From IF=10mA to IR=1mA, VR=6Volts, RL=100Ω | 1 |
| Reverse voltage | VR |  |  | 75 | V | TA=25°C | 1 |
| Maximum dc blocking voltage | VDC |  |  | 75 | V | TA=25°C | 1 |
| Peak reverse voltage | VRM |  |  | 100 | V | TA=25°C | 1 |
| RMS voltage | VRMS |  |  | 50 | V | TA=25°C | 1 |
| Maximum average forward current | IF(AV) |  |  | 200 | mA | TA=25°C | 1 |
| Peak forward surge current | IFSM |  |  | 4 | A | 0.001ms | 1 |
| Peak forward surge current | IFSM |  |  | 1.5 | A | 10ms | 1 |
| Peak forward surge current | IFSM |  |  | 0.5 | A | 1s | 1 |
| Power dissipation | PD |  |  | 250 | mW | derate above 25°C | 1 |
| Thermal resistance junction to ambient | RθJA |  | 500 |  | °C/W | Note 1: FR4, single-sided copper, 50 x 15mm PCB | 1 |
| Thermal resistance junction to ambient | RθJA |  | 650 |  | °C/W | Note 2: FR4, single-sided copper, mini pad | 1 |
| Thermal resistance junction to case | RθJC |  | 280 |  | °C/W | Note 4: FR-4 PCB, mini pad, 100cm2 copper pad area | 1 |
| Thermal resistance junction to lead | RθJL |  | 400 |  | °C/W | Note 4: FR-4 PCB, mini pad, 100cm2 copper pad area | 1 |
| Operating and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `1N4148WS_R1_00001`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `1n4148ws-r1-00001-etched.step` / `1n4148ws-r1-00001-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1n4148ws-r1-00001.step` / `1n4148ws-r1-00001.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885236498747392) (4 pp, sha256 `3fe953580d3b8f7d`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/1n4148ws-r1-00001-datasheet.pdf)