EL851S AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

EL851S product

EL851S

Transistor

phototransistor optocoupler5000 Vrms isolation350 V output4-pin

EL851S is a 4-pin AOTE phototransistor optocoupler rated for 5000 Vrms isolation and 350 V collector-emitter breakdown voltage.

Best for

  • Galvanically isolated digital or low-frequency signal interfaces
  • Industrial control and power-system isolation

Avoid if

  • The design requires a guaranteed lifecycle status or a package not listed in the datasheet

Check before use

  • Package variant and PCB footprint
  • CTR at the actual LED current and temperature
  • Isolation voltage, creepage, and soldering conditions

Key specifications

Isolation voltage
5000 Vrms
CTR
50-600%
Collector-emitter breakdown voltage
350 V
Operating temperature
-55 to +110 °C

Compliance & Environment

RoHS
Compliant
REACH
Compliant
MSL
Class 1
ECCN
-
HTSUS
-

Application

Industrial controlSignal isolationPower systems

CAD Models

Download ECAD models for EL851S: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

EL851S is a phototransistor-output optocoupler from AOTE. It provides input-output isolation and is available in DIP4, DIP4-M, and SMD4 packages.