VOL628AT

Transistor, Photovoltaic Output Optoisolators Overview

The VOL628AT is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and utilizes a surface-mount SSOP-4 package. The device provides high isolation voltage of 5000 Vrms, supporting AC or DC input signals. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum forward current of 60 mA, and a typical forward voltage of 1.16 V. The component operates within a temperature range of -55°C to +110°C, with typical rise and fall times of 3.5 µs and 5 µs respectively.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates two GaAs infrared emitting diodes optically coupled to a silicon planar phototransistor for enhanced signal integrity.
• Provides robust electrical isolation with a rated insulation voltage of 5000 Vrms between input and output circuits.
• Supports both AC and DC input signal types, offering versatility in circuit design applications.

Transistor, Photovoltaic Output Optoisolators Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microprocessor-based logic systems
• Power supply feedback loops requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix designation (e.g., AT) against the manufacturer's official datasheet to ensure correct packaging and binning specifications. Confirm that the ordering code matches the required current transfer ratio group and isolation voltage rating. Cross-reference the RoHS compliance status and moisture sensitivity level with project requirements before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed switching performance combined with high isolation voltage is required. The VOL628AT offers a balance of fast response times and compact surface-mount packaging. Ensure the application's input current does not exceed the 60 mA maximum rating and verify that the load conditions remain within the phototransistor's 80 V collector-emitter voltage limit.

Transistor, Photovoltaic Output Optoisolators Part Context

The VOL628AT belongs to the VOL series of optocouplers from Vishay, designed for general-purpose isolation applications. This series is characterized by its use of GaAs LED technology and planar phototransistor outputs. The part is commonly used in environments demanding reliable signal transmission across isolated boundaries, such as in communication interfaces and power management circuits.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other Vishay VOL series variants with matching pinouts and electrical characteristics. Verify compatibility with equivalent current transfer ratios and isolation ratings when considering alternative manufacturers' components.