# KRC106S

**BORN** · Digital Transistors · SOT-23

KRC106S from BORN, in a SOT-23. 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 | Base | input | Base input of the digital transistor, which drives the internal input resistor R1 (4.7 kΩ) in series with the base (datasheet labels this pin Input). |
| 2 | Emitter | passive | Common emitter of the NPN digital transistor, listed in the datasheet as Emitter (Common). |
| 3 | Collector | output | Collector output of the digital transistor, rated for a collector-emitter voltage VCEO of 50 V and collector current IC of 100 mA maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `KRC106S`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `krc106s-etched.step` / `krc106s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `krc106s.step` / `krc106s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BORN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603165236958539776) (3 pp, sha256 `70d7b2a97072d73f`, retrieved 2026-10-09, 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/krc106s-datasheet.pdf)