EL852S(TA)

Overview

The EL852S(TA) is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features a Darlington phototransistor output configured in a 4-SMD surface-mount package. The device provides an isolation voltage rating of 5000Vrms, ensuring robust electrical separation between input and output circuits. Key electrical parameters include a maximum collector-emitter saturation voltage (Vce(sat)) of 1.2V. Typical switching characteristics specify rise and fall times of 300µs and 100µs respectively. The component is designed for surface mount technology applications requiring high isolation and reliable signal transmission.

Feature Summary

• High isolation voltage capability of 5000Vrms for safe circuit separation
• Darlington phototransistor output configuration for high current transfer ratio
• Compact 4-SMD surface-mount package design for automated assembly

Applications

• General-purpose signal isolation in industrial control systems
• Power supply feedback loops requiring galvanic isolation
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm pinout compatibility and packaging variations. Ensure that the procurement source provides authentic components from Everlight Electronics Co Ltd to avoid counterfeit risks associated with this part number. Confirm RoHS compliance status if required for specific regulatory environments.

Selection Notes

Select this component when high isolation voltage and moderate switching speeds are required. The Darlington output offers higher gain compared to standard phototransistors, suitable for driving loads directly. Consider the 4-SMD footprint constraints during PCB layout. Evaluate thermal management requirements based on the specified Vce(sat) and operating conditions.

Part Context

This optocoupler belongs to the family of transistor output isolators produced by Everlight Electronics Co Ltd. It utilizes infrared technology to transmit signals across an insulating barrier. The device is categorized under general-purpose optoisolators, distinct from logic-output or thyristor-output variants within the manufacturer's portfolio.

Replacement Considerations

Consult official substitution guides for compatible parts such as EL852S1(TA). Verify pin compatibility and electrical ratings before replacing existing designs.

FAQ

What is the typical switching speed of the EL852S(TA)?

The typical rise time is 300µs and the typical fall time is 100µs.

What type of output stage does this optocoupler use?

It uses a Darlington phototransistor output configuration.