EL3H7(J)-G

Overview

The EL3H7(J)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode optically coupled to an NPN phototransistor detector, encapsulated in a compact 4-SSOP package. The device provides high isolation voltage of 3750 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a collector-emitter saturation voltage of 200mV maximum, a forward current of 50mA maximum, and a typical rise/fall time of 5µs/3µs. The CTR range for this specific suffix is typically 100-200% at 5mA input current.

Feature Summary

• Compact 4-pin SSOP surface mount packaging designed for space-constrained applications
• High insulation voltage capability ensuring reliable signal isolation between circuits
• Wide operating temperature range suitable for demanding industrial environments
• Fast switching speed with low propagation delay characteristics

Applications

• Industrial automation control systems requiring galvanic isolation
• Consumer electronics power supply feedback loops
• Microcontroller interface circuits for noise immunity
• Signal transmission across isolated ground planes

Procurement Notes

Verify the exact CTR binning (J suffix) against the official datasheet before integration. Confirm package dimensions match PCB footprint requirements. Check RoHS compliance status as per latest manufacturer declarations. Ensure storage conditions maintain moisture sensitivity level integrity prior to reflow soldering.

Selection Notes

Select this component when small form factor and high isolation voltage are critical. Compare CTR specifications against other EL3H7 variants if specific gain ranges are required. Verify thermal management needs given the wide operating temperature range. Consider pin compatibility with existing designs using standard 4-SSOP footprints.

Part Context

This part belongs to the EL3H7 series of ultra-small SSOP optocouplers from Everlight. The series offers various CTR bins and packaging options to suit different application needs while maintaining consistent isolation performance and physical dimensions across the family.

Replacement Considerations

Direct substitutes may include other EL3H7 variants with different CTR ratings or packaging suffixes. Verify pinout compatibility and electrical parameters before substitution. Consult Everlight documentation for approved cross-reference parts.