SFH6186-2

Overview

The SFH6186-2 is a single-channel phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and operates in a surface-mount SMD-4 package. The device provides an isolation voltage of 5300 Vrms with a maximum collector-emitter voltage of 55 V and a maximum collector current of 100 mA. The forward voltage is 1.5 V at a maximum forward current of 60 mA. The current transfer ratio ranges from 63% to 125%. Rise and fall times are 3.5 µs and 5 µs, respectively. Power dissipation is 150 mW, and the operating temperature range spans from -55°C to +100°C.

Feature Summary

• High isolation voltage capability for safe signal transmission between separated circuits
• End-stackable design with standard lead spacing for compact PCB layouts
• Low coupling capacitance to minimize interference during high-speed switching

Applications

• Signal transmission between electrically separated circuits
• Industrial control systems requiring galvanic isolation
• Consumer electronics with safety isolation requirements

Procurement Notes

Verify the specific suffix matches the required Current Transfer Ratio (CTR) bin, as the SFH6186 series uses numeric suffixes to denote different CTR ranges. Confirm the package type corresponds to the surface-mount variant rather than the through-hole DIP version. Ensure compliance with relevant safety certifications such as UL, CSA, or EN standards if used in regulated equipment. Check RoHS status for environmental compliance requirements.

Selection Notes

Select this component when a moderate current transfer ratio between 63% and 125% is sufficient for the application. Consider the 5300 Vrms isolation rating for high-voltage separation needs. Evaluate the 3.5 µs rise time against system speed requirements. Compare against other SFH6186 variants if higher or lower CTR bins are needed without changing the physical footprint.

Part Context

The SFH6186-2 belongs to the SFH6186 family of phototransistor output optocouplers. This family shares common electrical characteristics such as isolation voltage and package style but differs primarily in the Current Transfer Ratio (CTR) specifications. Other variants include the SFH6186-3, -4, and -5, which offer progressively higher CTR ranges. The SFH618A is the through-hole DIP equivalent within the same product line.

Replacement Considerations

Direct substitutes within the same CTR bin may be limited. Variants like SFH6186-3 or SFH6186-4 can replace it if higher CTR is acceptable. For identical performance, verify availability of exact CTR bins from other manufacturers or check for updated Vishay revisions.