SFH617A-2X019

Overview

The SFH617A-2X019 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a continuous collector current rating of 50 mA. The device provides an isolation voltage of 5300 Vrms, ensuring robust signal transmission across isolated circuits. Key electrical parameters include a forward current of 60 mA, a forward voltage of 1.65 V, and a collector-emitter saturation voltage of 250 mV. The current transfer ratio ranges from 63% to 125%, with typical rise and fall times of 3 µs and 14 µs, respectively. It is housed in a compact SMD-4 package.

Feature Summary

• Provides high-voltage isolation capability for safe signal transmission between isolated circuits
• Features fast switching performance suitable for digital signal applications
• Utilizes a compact surface-mount package design for efficient PCB integration

Applications

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

Procurement Notes

Verify the specific suffix X019 corresponds to the required tape-and-reel packaging configuration when ordering. Confirm that the SMD-4 footprint matches the target PCB layout dimensions. Ensure the selected component meets RoHS compliance requirements for the intended market. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability of the semiconductor batch.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed and high isolation voltage is required. Compare the 5300 Vrms rating against system safety standards. Evaluate the 63-125% current transfer ratio range to ensure adequate noise margin for the application. Consider the SMD-4 package constraints versus through-hole alternatives if mechanical stress is a concern.

Part Context

This component belongs to the SFH617A series of transistor output optocouplers. The series offers various packaging options including DIP and SMD configurations. The SFH617A-2 variant specifically denotes the SMD-4 package type. This family is designed for general-purpose isolation tasks where reliability and compact size are prioritized over ultra-high speed or high-current capabilities.

Replacement Considerations

The VO617A-2 is listed as a recommended alternative with similar specifications but may differ in packaging or minor electrical characteristics. Verify pinout compatibility and thermal performance before substitution. Other variants like SFH617A-2X009T share the same core technology but may have different reel quantities or slight parameter variations.