SFH601-3

Overview

The SFH601-3 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a base connection, housed in a DIP-6 through-hole package. The device provides electrical isolation with an insulation voltage of 5000 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 100 V, a maximum collector current of 50 mA, and a power dissipation of 150 mW. The forward current is rated at 60 mA with a typical forward voltage of 1.65 V. The current transfer ratio ranges from 100% to 200%. Operating temperatures span from -55°C to +100°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using infrared LED and phototransistor technology.
• Includes a base connection on the phototransistor to allow for improved switching speed control or gain adjustment.
• Designed for high reliability with robust insulation capabilities suitable for safety-critical applications.

Applications

• Digital logic signal transmission and level shifting
• Power supply control and switching circuits
• Electrical isolation between systems and subsystems

Procurement Notes

Verify the specific suffix designation to confirm the package type and current transfer ratio bin. Ensure the procurement source provides valid RoHS compliance documentation. Check for any recent product change notices regarding lead plating or manufacturing location changes. Confirm that the supplier offers genuine components with traceable origin to avoid counterfeit risks.

Selection Notes

Select this component when a through-hole DIP-6 package is required for PCB assembly. Choose this part if the application demands a CTR range of 100-200% and operates within standard temperature limits. Consider the base pin availability if external biasing or speed optimization is needed. Verify that the 50 mA collector current rating meets the load requirements of the driven circuit.

Part Context

This component belongs to the SFH601 series of optocouplers from Vishay. It shares architectural similarities with other models in the family but differs in packaging and performance bins. The SFH601-3 specifically denotes the DIP-6 variant with a defined CTR range. Other variants like SFH601-4 offer different CTR specifications, while SMD versions provide surface mount options.

Replacement Considerations

Direct substitutes may include other Vishay SFH601 series parts with matching CTR and package constraints. Cross-brand replacements require verification of pinout compatibility, isolation voltage ratings, and thermal characteristics. Ensure any alternative maintains the same base-connected phototransistor configuration if speed control is utilized.