The SFH691AT is an optocoupler with a GaAs infrared emitter and silicon phototransistor detector in a 4-pin SOP-4 mini-flat package, measuring 7.21 mm in length, designed for signal transmission between electrically isolated circuits. It features a 3750 V RMS isolation test voltage, a 70 V collector-emitter breakdown voltage, bidirectional AC input capability, and a current transfer ratio ranging from 50% to 300%. The device meets UL, cUL, DIN EN 60747-5-5 (VDE 0884), BSI, CQC, and FIMKO safety approvals. It has a coupling capacitance of 0.4 pF, rise and fall times of 3 μs and 4 μs respectively, and operates within an ambient temperature range of -55°C to +100°C.
AC Input Optocoupler, 3.75kV Isolation, SOP-4, 70V VCEO Product overview: SFH691AT from Vishay is a Bipolar Transistor for signal amplification, switching, driver stages, discrete power control, and general electronic circuit design. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 3.75kV, 70V. Search-friendly keywords include transistor, BJT, switching, amplification, 3.75kV, 70V, Bipolar Transistor, Transistor, Photovoltaic Output Optoisolators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 903-SFH691AT can be used for catalog matching and distributor lookup.
| ERSAELECTRONICS PTE. LTD. | |
|---|---|
| Product Category | Bipolar RF Transistors |
| Product Number | 903-SFH691AT |
| Product Name | 3.75kV 70V Bipolar Transistor |
| IC(max) | 100 milliamps |
