Vishay Intertechnology, Inc. 5.3kV 70V Bipolar Transistor ILD621

2-Ch Transistor Optocoupler, 5.3kV Isolation, 600% CTR, 70V VCEO Product overview: ILD621 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 5.3kV, 70V. Search-friendly keywords include transistor, BJT, switching, amplification, 5.3kV, 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-ILD621 can be used for catalog matching and distributor lookup.