CYAQW214D4 from OCIC, 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	ANODE	input	LED anode of the input opto-coupler. Drive with forward current IF = 5-10 mA (recommended); VF ≈ 1.14 V typ, 1.5 V max at IF = 5 mA. Absolute-max IF = 50 mA continuous, 1 A peak (IFP), 5 V reverse (VR).
2	CATHODE	input	LED cathode of the input opto-coupler; return path for the drive current supplied at pin 1.
3	LOAD1	passive	Output MOSFET terminal (drain of one of the back-to-back output FETs). Interchangeable with pin 4 for AC or DC loads. Rated 400 V peak load voltage (VL), 120 mA continuous / 300 mA peak load current (IL/Ipeak), on-resistance Ron = 30 Ω typ (50 Ω max) with IF = 5 mA, off-state leakage <1 µA.
4	LOAD2	passive	Output MOSFET terminal (drain of the other back-to-back output FET). Interchangeable with pin 3. Same ratings: 400 V peak VL, 120 mA IL, Ron = 30 Ω typ.

Key specifications

Parameter	Value
Manufacturer	OCIC
Package	DIP-4
Category	Optoisolators
Pins	4

Ordering variants

Same part, different packaging or reel option.

CYAQW214D4
CYAQW214D4S4
CYAQW214D4EH
CYAQW214D4EHAX

CAD (KiCad official)

Symbol: CYAQW214D4
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: OCIC datasheet (None pp, sha256 54a2ff830d345d9a, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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