STMicroelectronics TRANSISTORS - Transistors (BJT) - Single - BULK128D-B BULK128D-B

Manufacturer: STMicroelectronics
Win Source Part Number: 201658-BULK128D-B
Packaging: Tube/Rail
Mounting: Through Hole
Transistor Polarity: NPN
Categories: Discrete Semiconductor Products
Status: Obsolete(EOL)
Temperature Range - Operating: 150°C (TJ)
Case / Package: SOT-82-3
Maximum Current Collector: 4A
VCEO Maximum Collector-Emitter Breakdown Voltage: 400V
Max Vce (sat): 1.5V @ 500mA, 2.5A
Collector Cut-off Current(Max): 250μA
Typical Gain (hFE) (Min): 8 @ 2A, 5V
Maximum Power Dissipation: 55W
Popularity: Medium
Fake Threat In the Open Market: 45 pct.
Supply and Demand Status: Balance

4A, 400V, NPN, Si, POWER TRANSISTOR, SOT-82, 3 PIN Product overview: BULK128D-B from STMicroelectronics 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 4A, 400V. Search-friendly keywords include transistor, BJT, switching, amplification, 4A, 400V, 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-BULK128D-B can be used for catalog matching and distributor lookup.