# 1N4148TR

**onsemi** · Switching Diodes · DO-35

1N4148TR from onsemi, in a DO-35. 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 terminal, marked on the DO-35 body with a black band; the diode conducts when the anode is positive relative to it, with VRRM of 100 V. |
| 2 | A | passive | Anode terminal, the axial lead opposite the black cathode band; rated for 200 mA average rectified forward current (IO) and 300 mA DC forward current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | DO-35 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `1N4148TR`
- Footprint: `Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal`
- 3D model: DO-35 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887271303229440) (7 pp, sha256 `5efe1495500349b7`, retrieved 2026-10-12, 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/1n4148tr-datasheet.pdf)