EL817(S)(D)(TD)-VG

Overview

The EL817(S)(D)(TD)-VG is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor detector in a 4-SMD gull-wing package. The device provides high isolation voltage of 5000 Vrms between input and output, with a creepage distance exceeding 7.62 mm. It operates within a temperature range of -55°C to +110°C and supports a maximum forward current of 50 mA. The component is RoHS compliant, halogen-free, and holds multiple international safety approvals including UL, VDE, SEMKO, NEMKO, DEMKO, FIMKO, CSA, and CQC.

Feature Summary

• High isolation voltage capability between input and output circuits
• Compact surface-mount gull-wing package design for space-constrained applications
• Wide operating temperature range suitable for demanding environments
• Compliance with global safety standards and environmental regulations

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for circuit protection
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix (TD) against the manufacturer's latest datasheet to confirm pinout and packaging details. Ensure compliance requirements such as RoHS and halogen-free status are explicitly documented for your project specifications. Cross-reference safety approval numbers with relevant regulatory bodies before finalizing procurement decisions.

Selection Notes

Select this component when a surface-mount solution is required for galvanic isolation in low-power signal transmission. Consider the 5000 Vrms isolation rating for applications involving potential voltage differences between isolated domains. Verify that the NPN phototransistor output configuration matches the receiving circuit's logic requirements.

Part Context

This part belongs to the EL817 series, a widely used family of transistor output optocouplers. The series typically includes various package options such as DIP and SMD variants. The EL817(S)(D)(TD)-VG specifically denotes the surface-mount gull-wing configuration with specific tape-and-reel packaging characteristics defined by the manufacturer.

Replacement Considerations

Direct replacements may include other EL817 series variants from Everlight or equivalent transistor output optocouplers from manufacturers like Sharp, Vishay, or Toshiba. Ensure the substitute maintains the same 4-pin SMD footprint, isolation voltage rating, and current transfer ratio characteristics.