SFH1617A-2

Overview

The SFH1617A-2 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output housed in a PDIP-4 through-hole package. The device provides an isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 50 mA, and a forward current of 60 mA. The current transfer ratio ranges from 63% to 125%, with typical rise and fall times of 3 µs and 14 µs respectively.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using infrared LED technology.
• Features a fast switching response suitable for digital signal transmission applications.
• Designed for reliable operation across a wide industrial temperature range.

Applications

• Industrial control systems requiring galvanic isolation
• Signal isolation in measurement and testing equipment
• Power supply feedback loops

Procurement Notes

Verify the specific suffix and packaging configuration against the official datasheet to ensure compatibility with your assembly process. Confirm that the component meets all required safety certifications for your target market. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Ensure storage conditions adhere to moisture sensitivity levels specified in the manufacturing data.

Selection Notes

Select this component when a through-hole DIP package is required for robust mechanical mounting. Consider the 5000 Vrms isolation rating for applications demanding significant voltage separation. Evaluate the 63-125% CTR range to ensure sufficient gain for your load requirements. Verify that the 70 V collector-emitter voltage aligns with your circuit's maximum operating limits.

Part Context

This component belongs to the SFH series of optocouplers from Vishay. It is functionally similar to other single-channel transistor output isolators but distinguishes itself through its specific through-hole packaging and high isolation voltage rating. It serves as a standard solution for basic digital isolation tasks where surface-mount options are not feasible.

Replacement Considerations

The VO617A-2 is listed as a recommended alternative. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure the replacement part meets the same isolation voltage and thermal specifications required by the original design.

FAQ

What is the maximum isolation voltage of the SFH1617A-2?

The device supports an isolation test voltage of 5000 Vrms.

What is the operating temperature range?

The component is rated for operation between -55°C and +110°C.