# P1N4148WS

**Shanghai Prisemi Elec** · Switching Diodes · SOD-323

P1N4148WS from Shanghai Prisemi Elec, 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 | Shanghai Prisemi Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 75 |  |  | V | IR = 1μA | 1 |
| Reverse Leakage Current | IR |  |  | 0.025 | μA | VRWM = 20V T=25℃ | 1 |
| Reverse Leakage Current | IR |  |  | 30 | μA | VRWM = 25V T=150℃ | 1 |
| Reverse Leakage Current | IR |  |  | 1 | μA | VRWM = 75V T=25℃ | 1 |
| Reverse Leakage Current | IR |  |  | 50 | μA | VRWM = 75V T=150℃ | 1 |
| Forward Voltage | VF |  |  | 0.715 | V | IF=1mA | 1 |
| Forward Voltage | VF |  |  | 0.855 | V | IF=10mA | 1 |
| Forward Voltage | VF |  |  | 1 | V | IF=50mA | 1 |
| Forward Voltage | VF |  |  | 1.25 | V | IF=150mA | 1 |
| Forward Voltage | VF |  |  | 1.5 | V | IF=300mA | 1 |
| Reverse Recovery Time | trr |  |  | 8 | ns | IF=0.5A IR=1A Irr=0.25A | 1 |
| Diode Capacitance | C |  |  | 5 | pF | VR=4V f = 1MHz | 1 |
| Repetitive Peak Reverse Voltage | VRRM |  |  | 100 | V | @25℃ | 1 |
| RMS Voltage | VRMS |  |  | 75 | V | @25℃ | 1 |
| Continuous Forward Current | IF |  |  | 300 | mA | @25℃ | 1 |
| Non-repetitive Peak Forward Surge Current | IFSM |  |  | 4 | A | at 1ms | 1 |
| Power Dissipation | Ptot |  |  | 400 | mW | @25℃ | 1 |
| Lead Soldering Temperature | TL |  |  | 260 | ℃ | 10 sec | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical Thermal Resistance | RθJA |  | 170 |  | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `P1N4148WS`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `p1n4148ws-etched.step` / `p1n4148ws-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p1n4148ws.step` / `p1n4148ws.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Prisemi Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590907064103215104) (5 pp, sha256 `4e707ab110b147ef`, 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/p1n4148ws-datasheet.pdf)