EL217

Overview

The EL217 is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an NPN phototransistor output and provides an insulation voltage of 3750 Vrms. The device is available in surface-mount packages including Reel configurations with suffixes such as (TA) and (TB). Key electrical parameters include a maximum collector-emitter saturation voltage of 400 mV, a maximum collector current of 50 mA, and a maximum collector-emitter voltage of 80 V. The component supports a maximum forward current of 60 mA and exhibits rise and fall times typically ranging from 1.6 µs to 2.2 µs.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using infrared LED and NPN phototransistor technology.
• Offers compact surface-mount packaging options suitable for automated assembly processes.
• Features fast switching characteristics with low propagation delay times for signal transmission.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessors and logic devices
• Power supply feedback loops

Procurement Notes

Verify the specific suffix designation, such as (TA) or (TB), as these indicate distinct packaging formats like tape and reel types. Confirm RoHS compliance status and moisture sensitivity levels prior to integration into the manufacturing process. Ensure that the selected variant matches the required lead configuration and reel specifications for the intended production line equipment.

Selection Notes

Select the EL217 when a single-channel isolation solution with NPN phototransistor output is required. Consider the 3750 Vrms insulation rating for applications demanding robust barrier protection. Evaluate the package type against board space constraints and assembly methods. Verify that the 80 V collector-emitter voltage and 50 mA current ratings align with the load requirements of the target circuit design.

Part Context

The EL217 belongs to the broader EL series of transistor output optocouplers produced by Everlight. This family includes variants with different channel counts and package styles, such as the dual-channel ELD217. The EL217 specifically addresses needs for single-channel isolation in compact form factors, distinguishing itself from through-hole DIP versions like the EL817 by offering surface-mount compatibility.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official manufacturer cross-reference guides or datasheets for verified equivalent components before implementing any alternative parts in the design.