EL852S1(TA)

Overview

The EL852S1(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output housed in a 4-SMD package with gull-wing leads. The device provides high isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a minimum current transfer ratio (CTR) of 1000% and a maximum CTR of 15000%. The collector-emitter saturation voltage is specified at 1.2V under conditions of 20mA base current and 100mA collector current.

Feature Summary

• High current transfer ratio for sensitive signal detection
• Wide operating temperature range suitable for harsh environments
• Robust insulation voltage for safety isolation

Applications

• Industrial control systems requiring galvanic isolation
• Solid-state relay driver circuits
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix TA against official Everlight documentation to confirm package type and reel specifications. Ensure compliance with RoHS directives as indicated in product data sheets. Confirm availability status through authorized distributors, as supply constraints may affect lead times. Cross-reference part numbers with ECAD models for PCB layout compatibility.

Selection Notes

Select this component when high gain is required due to its exceptional current transfer ratio compared to standard phototransistors. The wide temperature range makes it suitable for automotive or industrial applications where thermal stability is critical. Verify that the 4-SMD footprint matches the target design constraints and that the isolation voltage meets system safety requirements.

Part Context

This part belongs to Everlight's transistor output optocoupler family, designed for general-purpose isolation tasks. It differs from triac or SCR output variants like the EL3052 series by providing digital switching capabilities rather than AC load control. The SMD packaging facilitates automated assembly processes in modern electronics manufacturing.

Replacement Considerations

Consult official substitution guides for equivalent parts. Generic replacements must match the 4-SMD package, 5000 Vrms isolation, and comparable CTR ranges. Verify pinout compatibility before implementation.