EL817(S)(A)(TB)-G

Overview

The EL817(S)(A)(TB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and provides high isolation voltage of 5000 Vrms between input and output circuits. The component utilizes a surface-mount 4-SMD package, specifically designed for tape and reel handling (Type I). It operates within a temperature range of -55°C to 110°C and supports a maximum collector-emitter voltage of 35V with a collector current capacity of 50mA.

Feature Summary

• High isolation voltage capability between input and output sections
• Compact surface-mount package configuration suitable for automated assembly
• NPN phototransistor output structure for digital signal transmission

Applications

• Industrial control systems requiring electrical isolation
• Signal isolation in microprocessor-based circuits
• Power supply feedback loop isolation

Procurement Notes

Verify the specific CTR binning requirements against the official datasheet, as the 'A' suffix typically denotes a specific current transfer ratio range. Confirm that the tape and reel packaging type matches your pick-and-place equipment specifications. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the exact suffix codes with Everlight documentation to confirm pinout and mechanical dimensions.

Selection Notes

Select this component when a surface-mount solution is required for galvanic isolation in low-power digital applications. The 5000 Vrms isolation rating makes it suitable for safety-critical interfaces. Consider the thermal operating range and package size constraints relative to the PCB layout. Verify that the input forward current and output voltage ratings align with the driving and load circuit parameters.

Part Context

This part belongs to the EL817 series of photocouplers from Everlight, which are widely used for general-purpose isolation. The series includes various package options such as DIP and SMD, with different lead configurations and CTR grades. The EL817 family is recognized for its reliability and compliance with international safety standards including UL, VDE, and CSA approvals.

Replacement Considerations

Direct replacements may include other EL817 variants with compatible SMD packages and similar isolation ratings. Verify pin compatibility and electrical characteristics before substitution. Generic equivalents from other manufacturers may require verification of package dimensions and CTR ranges.