SFH601-4

Overview

The SFH601-4 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductors. It features an NPN phototransistor output with a base connection, housed in a DIP-6 through-hole package. Key electrical parameters include a maximum collector-emitter voltage of 100 V and a maximum collector current of 100 mA. The device supports a forward current of 60 mA with a forward voltage of 1.65 V. It offers an insulation voltage of 5000 Vrms and operates within a temperature range of -55°C to +100°C. The current transfer ratio is specified at 320%, with a power dissipation of 150 mW.

Feature Summary

• Integrates a Gallium Arsenide LED emitter with a silicon planar phototransistor detector for optical coupling.
• Provides high isolation capability with a test voltage of 5300 VRMS over one second.
• Includes a base connection on the phototransistor to allow for improved switching speed control.

Applications

• General-purpose signal isolation in digital circuits
• Interface between low-voltage logic and higher-voltage loads
• Industrial control systems requiring galvanic isolation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Check for obsolescence notices as availability may vary. Ensure packaging specifications match project requirements. Validate datasheet revisions against production batches.

Selection Notes

Select this component when high isolation voltage and moderate speed are required. Consider the base pin utility for optimizing rise/fall times. Evaluate thermal management needs given the 150 mW power dissipation limit. Compare current transfer ratio variations across operating temperatures. Ensure DIP-6 footprint compatibility with existing PCB layouts.

Part Context

The SFH601 series belongs to Vishay's family of miniature phototransistor optocouplers designed for general-purpose applications. These devices utilize GaAs LEDs for efficient light emission and silicon phototransistors for detection. The SFH601-4 variant specifically targets applications needing reliable isolation with enhanced switching characteristics due to its base-connected output structure.

Replacement Considerations

Public confirmed substitute part numbers: None identified in provided documentation.