SFH6286-4T

Overview

The SFH6286-4T is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a current transfer ratio ranging from 160% to 500%. The device supports a maximum forward current of 50 mA and a typical forward voltage of 1.5 V. It provides high isolation capability with an insulation voltage of 5300 Vrms. Electrical characteristics include a maximum collector-emitter voltage of 55 V, a maximum collector current of 100 mA, and a saturation voltage of 400 mV. Switching performance is defined by a typical rise time of 3.5 µs and a fall time of 5 µs. The component operates within a temperature range of -55°C to +100°C and is housed in a compact 4-SMD surface-mount package.

Feature Summary

• High isolation voltage rating of 5300 Vrms for robust electrical safety
• Wide current transfer ratio range supporting diverse signal transmission needs
• Surface-mount construction optimized for automated assembly processes
• AC and DC input compatibility for flexible circuit integration

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits between microprocessors and power stages
• Isolation barriers in consumer electronics and home appliances
• Power supply feedback loops requiring galvanic separation

Procurement Notes

Verify the specific current transfer ratio bin (160-500%) required for your application against the manufacturer's datasheet specifications. Confirm that the 4-SMD gull-wing package dimensions align with your PCB footprint design. Ensure compliance with RoHS3 standards if environmental regulations apply to your manufacturing process. Check for any recent product change notices regarding assembly or sourcing updates before finalizing procurement plans.

Selection Notes

Select this component when high isolation voltage and moderate switching speed are critical requirements. The wide CTR range allows for tolerance flexibility in resistor selection for the LED driver circuit. Consider the 100 mA collector current limit when designing load interfaces. The surface-mount format is suitable for space-constrained designs requiring reliable thermal performance within the specified operating temperature range.

Part Context

This part belongs to the SFH628 series of transistor output optocouplers designed for general-purpose isolation applications. It shares similar packaging and basic electrical characteristics with other variants in the family, such as the SFH6286-3T, which offers different current transfer ratio ranges. The series is engineered to meet international safety standards including UL and VDE certifications for use in equipment requiring reinforced insulation.

Replacement Considerations

The SFH6286-3T is a documented alternative within the same series offering different current transfer ratio characteristics. Verify pinout compatibility and package dimensions before substitution. Ensure that the replacement part meets the required isolation voltage and switching speed specifications for the target application.