SFH601-3XSMT&R

Overview

The SFH601-3XSMT&R is a single-channel transistor output optocoupler manufactured by Isocom Components 2004 LTD. It features an infrared LED coupled to an NPN silicon phototransistor with a base terminal, housed in a surface-mount 6-pin PDIP package. Key electrical specifications include a maximum collector-emitter voltage of 100V and a high isolation voltage of 5300Vrms. The device supports a maximum DC forward current of 60mA and offers a typical turn-on time of 3µs and turn-off time of 2.3µs. Current transfer ratio ranges from 100% to 200% at 10mA input.

Feature Summary

• Integrates an infrared emitting diode with an NPN silicon phototransistor featuring a base terminal for enhanced switching control.

Applications

• General-purpose signal isolation in industrial control systems
• Interface between microcontrollers and high-voltage loads
• Power supply feedback loops requiring galvanic isolation

Procurement Notes

Verify the specific suffix 'XSMT&R' confirms the surface-mount tape-and-reel packaging configuration. Confirm that the manufacturer designation aligns with Isocom Components 2004 LTD or Vishay Semiconductor Opto Division as per the original component lineage. Ensure the datasheet matches the 6-pin SOP/mini-DIP form factor rather than through-hole variants.

Selection Notes

Select this component when surface-mount assembly is required for high-isolation applications. The base terminal allows for faster switching speeds compared to standard phototransistors without a base connection. Verify that the 100V collector-emitter voltage rating meets the load requirements and that the 5300Vrms isolation level satisfies safety standards for the target application environment.

Part Context

This part belongs to the SFH601 series of optically coupled isolators. The series typically consists of an infrared LED and an NPN silicon phototransistor. The SFH601-3 variant specifically denotes the surface-mount version with the XSMT&R suffix indicating reel packaging, distinguishing it from the through-hole DIP versions like the SFH601-2.

Replacement Considerations

• SFH601-2X001 (Through-hole equivalent)
• SFH601-3XSM (Surface mount, different reel specification)

FAQ

What is the purpose of the base terminal on the phototransistor?

The base terminal allows for external biasing or pull-down connections, which can significantly reduce turn-off times and improve switching performance compared to floating-base configurations.

What is the maximum isolation voltage for this component?

The SFH601-3XSMT&R provides a maximum isolation voltage of 5300Vrms, suitable for demanding industrial isolation applications.