onsemi Single Bipolar Transistors BD681

Bipolar (BJT) Transistor NPN - Darlington 100V 4A 40W Through Hole TO-126

Medium Power NPN Darlington Bipolar Power Transistor, TO-225, 500-BLKBX Product overview: BD681 from onsemi 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 key electrical ratings, package details, and application requirements. Search-friendly keywords include transistor, BJT, switching, amplification, Bipolar Transistor, Single Bipolar Transistors. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 276-BD681 can be used for catalog matching and distributor lookup.