# MCR16

**KY** · Thyristors (SCR)/Modules · SOT-23

MCR16 from KY, 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 | K | passive | Cathode of the SCR, the return terminal for on-state current (IT(RMS) 0.8 A, IT(AV) 0.7 A). |
| 2 | A | passive | Anode of the SCR, with repetitive peak off-state and reverse voltage VDRM/VRRM of 600 V. |
| 3 | G | input | Gate trigger input, with VGT ≤0.8 V and IGT ≤200 uA at VD=12 V, IT=0.1 A. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `MCR16`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mcr16-etched.step` / `mcr16-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcr16.step` / `mcr16.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KY datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588945355069132800) (7 pp, sha256 `58c39ee2cadb3840`, retrieved 2026-10-10, 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/mcr16-datasheet.pdf)