IL256AT

Transistor, Photovoltaic Output Optoisolators Overview

The IL256AT is a single-channel optocoupler manufactured by Vishay Semiconductor Opto Division, featuring a phototransistor output with an accessible base terminal. It provides 4000Vrms isolation voltage and operates within a temperature range of -55°C to 100°C. The device accepts AC or DC input signals and delivers a minimum current transfer ratio of 20% at 10mA forward current. Key electrical parameters include a maximum collector-emitter voltage of 30V, a typical forward voltage of 1.2V, and a maximum saturation voltage of 400mV. Packaged in an 8-SOIC surface-mount format, it supports industrial applications requiring reliable signal isolation.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a phototransistor output with a dedicated base connection for enhanced control flexibility
• Provides high-voltage isolation capability suitable for separating circuit grounds
• Supports both AC and DC input signal types for versatile interface compatibility

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring isolated switching
• Power supply feedback loops for voltage regulation
• Signal transmission across isolated barriers in measurement equipment

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distributors due to end-of-life status. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any specification updates prior to integration. Ensure storage conditions comply with moisture sensitivity level requirements to maintain reliability during assembly processes.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Choose this component when base access is required for customizing gain or speed characteristics. Consider the 4000Vrms isolation rating for safety compliance in high-voltage environments. Evaluate the 8-SOIC footprint against available PCB space constraints. Assess thermal performance within the specified operating temperature range for long-term stability.

Transistor, Photovoltaic Output Optoisolators Part Context

The IL256AT belongs to Vishay's transistor output optocoupler family, designed for general-purpose isolation tasks. It complements other devices in the series by offering base connectivity, distinguishing it from standard phototransistor outputs. This configuration allows users to modify response times or drive capabilities externally, providing greater design flexibility compared to fixed-output alternatives.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The part is officially declared End-of-Life by the manufacturer. No direct public substitute part numbers are confirmed in available documentation. Designers should initiate alternative sourcing strategies or redesign efforts immediately to mitigate supply chain risks associated with discontinued components.