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IL222AT

Vishay Intertech · Transistor, Photovoltaic Output Optoisolators · SOIC-8

IL222AT from Vishay Intertech, in a SOIC-8. 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 A passive LED anode of the gallium arsenide infrared emitter; continuous forward current is rated at 60 mA and peak reverse voltage at 6.0 V.
2 C passive LED cathode of the gallium arsenide infrared emitter; the CTR is tested at 1.0 mA LED current.
3 NC unconnected Not connected; the datasheet pin diagram shows no internal connection for this pin.
4 NC unconnected Not connected; the datasheet pin diagram shows no internal connection for this pin.
5 E passive Emitter of the silicon NPN photodarlington detector; emitter-collector breakdown voltage BVECO is 5.0 V.
6 C passive Collector of the silicon NPN photodarlington detector; collector-emitter breakdown voltage BVCEO is 30 V and DC collector current is limited to 50 mA.
7 B passive Base connection of the photodarlington detector, brought out as a separate pin per the device title 'with Base Connection'.
8 NC unconnected Not connected; the datasheet pin diagram shows no internal connection for this pin.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
Package SOIC-8
Category Optoisolators
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Peak reverse voltage VR 6 V 1
Forward continuous current IF 60 mA 1
Power dissipation (input) Pdiss 90 mW 1
Derate linearly from 25 °C (input) 1.2 mW/°C Derate linearly from 25 °C 1
Collector emitter breakdown voltage BVCEO 30 V 1
Emitter collector breakdown voltage BVECO 5 V 1
Collector base breakdown voltage BVCBO 70 V 1
DC collector current ICMAX 50 mA DC 1
Pulsed collector current ICMAX 100 mW t < 1.0 ms 1
Power dissipation (output) Pdiss 150 mW 1
Derate linearly from 25 °C (output) 2 mW/°C Derate linearly from 25 °C 1
Total package dissipation (LED and detector) Ptot 240 mW at 25 °C ambient 2
Derate total package dissipation 3.2 mW/°C Derate linearly from 25 °C 2
Storage temperature Tstg -55 150 °C 2
Operating temperature Tamb -55 100 °C 2
Soldering time 10 s at 260 °C 2
Current transfer ratio CTRDC 200 % IF = 1.0 mA, VCE = 5.0 V 2

CAD (KiCad official)

  • Symbol: IL222AT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: il222at-etched.step / il222at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); il222at.step / il222at.glb are the bare package body.

Provenance

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

  • Datasheet: Vishay Intertech datasheet (7 pp, sha256 48df270d67bef7a8, retrieved 2026-10-18, 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