EL817(S)(B)(TD)-VG

Overview

The EL817(S)(B)(TD)-VG is a high-speed optocoupler manufactured by Everlight Electronics. It integrates an AlGaAs infrared emitting diode with a high-speed integrated output IC, providing superior performance compared to standard phototransistor outputs. The device features a wide operating temperature range and offers excellent common-mode rejection ratio (CMTI) for noise immunity. Key electrical parameters include a current transfer ratio (CTR) typically ranging from 100% to 300%, a propagation delay of less than 5 microseconds, and a rise/fall time under 2 microseconds. It operates within a supply voltage range up to 30V and supports isolation voltages exceeding 5000 Vrms.

Feature Summary

• Integrates high-speed AlGaAs LED with dedicated output IC for fast switching
• Provides high common-mode rejection for reliable signal transmission in noisy environments
• Offers enhanced isolation voltage capabilities for safety-critical applications

Applications

• High-speed data communication interfaces
• Industrial automation control systems
• Power supply feedback loops requiring fast response times

Procurement Notes

Verify the specific suffix codes against official Everlight datasheets to ensure compatibility with required speed and isolation specifications. Confirm package type and tape/reel configuration for automated assembly processes. Check for RoHS compliance status if environmental regulations apply to your manufacturing location. Ensure storage conditions meet humidity sensitivity levels before reflow soldering.

Selection Notes

Choose this component when system requirements demand faster switching speeds than traditional phototransistor optocouplers can provide. Consider the CTR tolerance and propagation delay characteristics relative to your digital logic timing constraints. Evaluate the isolation voltage rating against your circuit's safety standards. Ensure the input forward current matches your driving source capabilities while staying within absolute maximum ratings.

Part Context

This part belongs to Everlight's EL817 series, which includes various configurations of optocouplers. The 'S' indicates a specific package style, while '(B)' and '(TD)' denote binning and tape-and-reel packaging options respectively. The '-VG' suffix may indicate specific material or regulatory compliance attributes defined by the manufacturer. This series is widely used in industrial and consumer electronics for signal isolation.

Replacement Considerations

Direct replacements should be sought from Everlight's EL817 family with matching pinouts and electrical characteristics. Verify that substitute components offer equivalent propagation delays and CMTI values. Ensure any alternative maintains the same isolation voltage rating and package dimensions for mechanical compatibility.