NPN Power Transistor, 400V VCEO, 4A IC, TO-220 Product overview: BUL128D-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 400V, 4A, TO-220. Search-friendly keywords include transistor, BJT, switching, amplification, 400V, 4A, TO-220, 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-BUL128D-B can be used for catalog matching and distributor lookup.
Bipolar (BJT) Transistor NPN 400V 4A 70W Through Hole TO-220
TRANS NPN 400V 4A TO220
Transistor Bipolar NPN 400V 4A TO220
Transistor Bipolar NPN 400V 4A TO220
Manufacturer: STMicroelectronics
Win Source Part Number: 144502-BUL128D-B
Packaging: Tube/Rail
Mounting: Through Hole
Transistor Polarity: NPN
Categories: Discrete Semiconductor Products
Status: Active
Temperature Range - Operating: 150°C (TJ)
Case / Package: TO-220AB
Maximum Current Collector: 4A
VCEO Maximum Collector-Emitter Breakdown Voltage: 400V
Max Vce (sat): 500mV @ 1A, 4A
Collector Cut-off Current(Max): 250μA
Typical Gain (hFE) (Min): 12 @ 2A, 5V
Maximum Power Dissipation: 70W
Popularity: Medium
Fake Threat In the Open Market: 30 pct.
Supply and Demand Status: Limited
Bipolar Transistors - BJT HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR
TRANS NPN 400V 4A TO220
| ERSAELECTRONICS PTE. LTD. | DigiKey | ODG (Origin Data Global) | RS Components, Ltd. | Win Source Electronics | VAST STOCK CO., LIMITED | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | Bipolar RF Transistors | Transistors | Bipolar RF Transistors | Bipolar RF Transistors | Transistors | Bipolar RF Transistors | Bipolar RF Transistors |
| Product Number | 276-BUL128D-B | 497-12755-5-ND | BUL128D-B | 6868048 | 144502-BUL128D-B | BUL128D-B | BUL128D-B |
| Product Name | 400V 4A TO-220 Bipolar Transistor | Single Bipolar Transistors | Single Bipolar Transistors | Bipolar Transistors | TRANSISTORS - Transistors (BJT) - Single - BUL128D-B | Bipolar Transistors - BJT | Discrete Semiconductor Products - Transistors - Bipolar (BJT) |
| Polarity | NPN | NPN | NPN; NPN | NPN | NPN; NPN | ||
| IC(max) | 4000 milliamps | 4000 milliamps | 4000 milliamps | ||||
| VCEO | 400 volts | 400 volts | 400 volts | ||||
| VCBO | 700 volts | ||||||
| PD | 70000 milliwatts |
