SFH1690BT

Overview

The SFH1690BT is a single-channel transistor output optocoupler from Vishay. It features a GaAs infrared emitting diode optically coupled to a silicon NPN phototransistor. The device provides an insulation voltage of 3750 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 100 mA, and a power dissipation rating of 150 mW. The forward voltage is typically 1.4 V at a maximum forward current of 50 mA. It is housed in a 4-SOP surface-mount package.

Feature Summary

• Utilizes a GaAs infrared LED emitter for high-speed optical coupling
• Provides robust galvanic isolation with 3750 Vrms insulation voltage
• Designed for extended industrial operation up to 110°C
• Features a compact 4-SOP surface-mount package

Applications

• Industrial process control systems
• Power supply feedback circuits
• Communication interface isolation
• Microcontroller input/output isolation

Procurement Notes

Verify the specific suffix against official Vishay documentation to confirm exact thermal ratings and packaging configurations. Ensure that the procurement source provides valid traceability and authenticity certificates. Confirm compliance with RoHS directives and check for any recent product change notices affecting the component specifications or availability status prior to finalizing orders.

Selection Notes

Select this component when a 110°C operating temperature rating is required for the application environment. Consider the 3750 Vrms isolation capability for safety-critical designs. Evaluate the CTR range and switching speeds against system requirements. Compare against alternative Vishay models such as the SFH1690AT or SFH1690ABT if different thermal or electrical characteristics are needed.

Part Context

The SFH1690BT belongs to the SFH1690 family of optocouplers, which includes variants like the SFH1690AT, SFH1690CT, and SFH1690ABT. These devices share a common architecture featuring a GaAs infrared emitter coupled to a silicon phototransistor. The family is designed for general-purpose isolation applications requiring reliable performance across varying industrial conditions.

Replacement Considerations

The SFH1690ABT is a confirmed substitute within the same family offering similar functionality.