EL827S1(TB)

Overview

The EL827S1(TB) is a dual-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared LED and phototransistor in an 8-SMD Gull Wing package to provide electrical isolation between input and output circuits. The device features a high isolation voltage of 5000 Vrms, ensuring safety in signal transmission applications. Key electrical parameters include a maximum forward current of 60 mA, a collector-emitter voltage of 80 V, and a typical rise/fall time of 3 µs/4 µs. It operates within a temperature range of -55°C to +110°C.

Feature Summary

• Dual-channel configuration for simultaneous signal isolation
• High insulation voltage capability for enhanced safety
• Fast switching speed suitable for digital logic transmission

Applications

• Digital logic signal transmission and conversion
• Power supply control and switching circuits
• Electrical insulation between circuit stages
• Impedance transformation between systems

Procurement Notes

Verify the specific suffix variant (TB vs TA) against design requirements, as packaging or mechanical dimensions may differ. Confirm availability status, as some listings indicate limited stock or end-of-life conditions. Ensure the selected component meets RoHS compliance standards if required by the target market regulations. Cross-reference datasheet revisions to confirm parameter consistency before finalizing procurement orders.

Selection Notes

Select this component when dual-channel isolation is required in a compact surface-mount footprint. The 80 V collector-emitter voltage rating supports standard low-voltage logic interfaces. Verify that the 60 mA forward current limit accommodates the driving circuit capabilities. Consider the thermal dissipation characteristics given the 200 mW power rating during continuous operation in enclosed environments.

Part Context

This part belongs to the EL827 series of transistor output optocouplers from Everlight. It shares functional similarities with other variants like EL827S1(TA)-V but differs in physical packaging specifications. The series is designed for general-purpose isolation tasks where space constraints necessitate SMD solutions over traditional DIP packages.

Replacement Considerations

EL827S1(TA) is a documented alternative within the same product family.