SFH615A-3

Overview

The SFH615A-3 is a single-channel transistor output optocoupler manufactured by Isocom Components. It features an NPN phototransistor output and utilizes a DIP-4 through-hole package. The device provides high isolation with a rated insulation voltage of 5300 Vrms. 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 typical rise time is 3 µs and the fall time is 14 µs. The unit operates within a temperature range of -55°C to +100°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor pair.
• Features a standard DIP-4 through-hole package suitable for general-purpose circuit board mounting.
• Delivers high dielectric strength with a 5300 Vrms insulation voltage rating for safety-critical applications.

Applications

• Logic-to-logic isolation in noisy industrial environments
• Line receiver circuits for signal transmission
• Programmable current level sensing systems

Procurement Notes

Verify that the specific part number matches the required package type and pin configuration for your design. Confirm compliance with relevant safety standards such as UL or VDE if required for your application. Ensure the supplier provides official documentation to validate the component's authenticity and specifications before purchase.

Selection Notes

Select this component when a through-hole NPN phototransistor optocoupler with high isolation voltage is needed. Consider the 5300 Vrms rating for safety isolation requirements. Evaluate the 50 mA collector current limit against load requirements. Compare performance metrics like CTR and switching speeds against alternative models if higher speed or different packaging is necessary.

Part Context

This component belongs to the SFH615A series of transistor output optocouplers. It serves as a functional equivalent to other industry-standard parts like the VO615A-3. The series is designed for general-purpose isolation tasks, offering reliability in digital signal transmission across isolated boundaries while maintaining compact physical dimensions.

Replacement Considerations

Public confirmed substitute part numbers include VO615A-3.