4N26S1(TA)-V

Overview

The 4N26S1(TA)-V is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates a gallium arsenide infrared emitting diode with a phototransistor in a surface-mount six-pin package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a minimum collector-emitter breakdown voltage of 80 V, a maximum forward current of 50 mA, and a nominal current transfer ratio of 20%. It operates within a temperature range of -55°C to +110°C and complies with RoHS standards.

Feature Summary

• High isolation voltage capability between input and output terminals
• Integrated zero-crossing detection functionality for precise switching
• Surface-mount packaging for automated assembly compatibility

Applications

• Power supply regulators
• Digital logic inputs
• Microprocessor inputs

Procurement Notes

Verify the specific suffix TA indicates tape and reel packaging configuration as per manufacturer documentation. Confirm UL recognition number E214129 and VDE approval number 132249 are valid for the production batch. Ensure the component meets RoHS compliance requirements for the intended market. Cross-reference datasheet revisions to confirm pinout consistency with existing design layouts.

Selection Notes

Select this component when high-speed digital isolation is required with surface-mount constraints. The 80 V collector-emitter breakdown voltage suits low-voltage logic interfacing. Verify thermal management capabilities for operation up to 110°C. Consider the 20% nominal current transfer ratio for drive circuit design margins. Ensure PCB footprint matches the six-pin surface-mount package dimensions.

Part Context

This part belongs to the 4N2X series of transistor output optocouplers from Everlight. The series includes variants like 4N25, 4N27, and 4N28 with similar isolation characteristics but different current transfer ratios. The S1 designation typically denotes a specific binning or testing standard within the product line. These devices are widely used in industrial control systems requiring galvanic isolation.

Replacement Considerations

Direct substitutes include other 4N26 variants such as 4N26M(TA) if through-hole packaging is acceptable. Surface-mount equivalents from other manufacturers must match the 5000 Vrms isolation and 80 V breakdown voltage specifications. Verify pinout compatibility before substitution to ensure correct anode, cathode, emitter, collector, and base connections.