component

EL817

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by Ray

Everlight Elec Transistor, Photovoltaic Output Optoisolators, DIP-4. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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EL817

Everlight Elec · Transistor, Photovoltaic Output Optoisolators · DIP-4

EL817 from Everlight Elec, 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 passive Anode of the infrared emitting LED (input side). Forward voltage VF typ 1.2V (max 1.4V) at IF=20mA; absolute maximum IF=60mA, IFP=1A (1us pulse), reverse voltage VR=6V.
2 Cathode passive Cathode of the infrared emitting LED (input side). Return path for the LED forward current; absolute maximum reverse voltage VR=6V.
3 Emitter passive Emitter of the output NPN phototransistor. Emitter-Collector breakdown voltage BVECO=6V; typically tied to output-side ground.
4 Collector passive Collector of the output NPN phototransistor. Collector-Emitter breakdown voltage BVCEO=35V, IC(max)=50mA, ICEO(dark)=100nA max at VCE=20V, VCE(sat) typ 0.1V at IF=20mA/IC=1mA.

Key specifications

Parameter Value
Manufacturer Everlight Elec
Package DIP-4
Category Optoisolators
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • EL817
  • EL817A
  • EL817B
  • EL817C
  • EL817D
  • EL817X
  • EL817Y
  • EL817M
  • EL817S1
  • EL817S1(TU)
  • EL817S1(TD)
  • EL817S2
  • EL817S2(TU)
  • EL817S2(TD)

CAD (KiCad official)

  • Symbol: EL817
  • 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: Everlight Elec datasheet (16 pp, sha256 d9b52e28759df28e, 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