SFH610A-3

Overview

The SFH610A-3 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and utilizes through-hole DIP-4 packaging. The device provides an isolation voltage of 5300 Vrms, ensuring robust electrical separation between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 100 mA, and a power dissipation rating of 150 mW. The forward current is rated at 60 mA with a forward voltage of 1.65 V. The current transfer ratio ranges from 100% to 200%. Switching characteristics include a rise time of 3 µs and a fall time of 14 µs. The component operates within a temperature range of -55°C to +100°C.

Feature Summary

• Provides high-voltage isolation via a 5300 Vrms dielectric barrier between the infrared LED and NPN phototransistor.
• Features a wide operating temperature range suitable for demanding industrial environments.
• Offers fast switching performance with defined rise and fall times for signal transmission.

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal isolation in microprocessor interfaces

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm package type and tape/reel specifications. Ensure that the procurement source provides valid RoHS compliance certificates and material declarations as required for regulatory adherence. Cross-reference the manufacturer part number with authorized distributor databases to confirm authenticity and traceability before finalizing orders.

Selection Notes

Select this component when a single-channel transistor output optocoupler with high isolation voltage is required. Consider the 100-200% current transfer ratio for logic interface applications. Evaluate the 150 mW power dissipation limit against thermal constraints in the target design. Compare switching speeds against system timing requirements to ensure compatibility with signal frequencies.

Part Context

This component belongs to the SFH610 series of transistor output optocouplers from Vishay. It is functionally equivalent to the VO610A-3 variant, sharing identical electrical characteristics and pinout configurations. The series is designed for general-purpose isolation applications, offering reliability in both through-hole and surface-mount implementations depending on the specific suffix.

Replacement Considerations

The VO610A-3 is a confirmed substitute part number with identical electrical specifications. Verify pin compatibility and mechanical dimensions before substitution. Ensure that any alternative components meet the same isolation voltage and current transfer ratio requirements.