# GAQY212GH

**SUPSiC** · Solid State Relays (MOS Output) · DIP-4

GAQY212GH from SUPSiC, in a DIP-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | LED_A | input | Input LED anode. Drive with forward current IF between 5 mA (min) and 30 mA (max); typical VF = 1.32 V at IF = 10 mA. Use an external series resistor sized to E1 (e.g. 300 Ω at 3.3 V, 1.9 kΩ at 12 V) for IF ≈ 5 mA. |
| 2 | LED_K | input | Input LED cathode. Reference/return for the input-side LED; LED reverse voltage VR limited to 5 V max. |
| 3 | MOS1 | passive | MOSFET output terminal (drain of one of the back-to-back output MOSFETs). Non-polarized AC/DC switching pair with pin 4; load voltage VL up to 60 V (AC peak or DC), continuous load current up to 1.8 A, peak 6.0 A for 100 ms, on-resistance 0.07 Ω typ / 0.15 Ω max. |
| 4 | MOS2 | passive | MOSFET output terminal (drain of the second back-to-back output MOSFET). Non-polarized AC/DC switching pair with pin 3; same ratings as pin 3 (60 V, 1.8 A, 0.07 Ω typ). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SUPSiC |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `GAQY212GH`
- `GAQY212GHA`

## CAD (KiCad official)

- Symbol: `GAQY212GH`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `gaqy212gh-etched.step` / `gaqy212gh-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gaqy212gh.step` / `gaqy212gh.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SUPSiC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602927138970345472) (6 pp, sha256 `03e6ab31a9d5e35c`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/gaqy212gh-datasheet.pdf)