SFH617A-1XSMT&R

Overview

The SFH617A-1XSMT&R is a surface mount optoisolator manufactured by Isocom Components. It features a single channel with a phototransistor output and utilizes a 4-pin Surface Mount PDIP package. Key electrical specifications include a maximum forward current of 50 mA, an isolation voltage of 5.3 kVrms, and a minimum current transfer ratio (CTR) of 40%. The device is designed for DC input applications.

Feature Summary

• Provides galvanic isolation between input and output circuits using a phototransistor configuration.
• Designed for surface mount technology to facilitate automated PCB assembly processes.
• Offers high isolation voltage capability for safety-critical signal transmission.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic devices
• Power supply feedback loops

Procurement Notes

Verify the specific suffix 'XSMT&R' against official manufacturer documentation to confirm pinout compatibility and tape-and-reel packaging requirements. Ensure that the 5.3 kVrms isolation rating meets the safety standards required for your specific application environment. Cross-reference the CTR range with circuit design constraints to guarantee proper switching performance under varying temperature conditions.

Selection Notes

Select this component when a compact surface mount solution is required for single-channel isolation. The 4-pin DIP form factor allows for easy replacement through-hole designs with SMD equivalents. Consider the 50 mA forward current limit and 40% minimum CTR when designing drive circuits to ensure reliable operation across the specified operating temperature range without excessive power dissipation.

Part Context

This part belongs to the SFH617A series of optocouplers from Isocom Components. The series typically offers various isolation voltages and output types. The 'X' suffix often denotes specific mechanical or compliance variations within the product line, while 'SMT&R' indicates surface mount packaging with reel delivery. This model represents a standard transistor-output isolator suitable for general-purpose digital signal transmission.

Replacement Considerations

Direct replacements may include other SFH617A variants with compatible pinouts, such as SFH617A-1SM, provided the isolation voltage and CTR specifications align with the original design requirements. Verify package dimensions and lead configurations before substitution.