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)

Provenance

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

Datasheet: SUPSiC datasheet (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