BD908 STMicroelectronics Transistor BJT PNP (Transistor Outline, Vertical) In Stock
BD908 is a PNP power transistor by STMicroelectronics in a TO-220 package, rated for 60 V collector-emitter voltage and 15 A continuous collector current. Key specs: 60 V VCEO, 15 A IC, 75 W power dissipation. From $0.30, in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE UNCONFIRMED
- Datasheet
- BD908 Datasheet PDF
- Category
- Transistor BJT PNP
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High 15 A continuous collector current rating supports demanding power switching and linear regulation applications
- 60 V collector-emitter breakdown voltage provides design margin in automotive and industrial power circuits
- TO-220AB package with exposed metal tab enables efficient thermal management and heatsink mounting
Applications
BD908 is used in power amplifier output stages, DC motor drive circuits, and linear voltage regulator designs where a PNP transistor handling up to 15 A is needed. Its 60 V rating makes it suitable for automotive battery-powered subsystems and industrial relay driver circuits. The TO-220 package simplifies heatsinking, allowing use in higher-power applications up to 75 W.
Specifications
| Pbfree Code | Yes |
| YTEOL | 2 |
| Collector Current-Max (IC) | 15A |
| Collector-Emitter Voltage-Max | 60V |
| Configuration | SINGLE |
| DC Current Gain-Min (hFE) | 5 |
| JEDEC-95 Code | TO-220AB |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Polarity/Channel Type | PNP |
| Power Dissipation Ambient-Max | 90W |
| Power Dissipation-Max (Abs) | 90W |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Terminal Finish | MATTE TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Transition Frequency-Nom (fT) | 3MHz |
| VCEsat-Max | 3V |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.29.00.95 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the maximum voltage and current ratings of the BD908 transistor?
The BD908 is rated for a maximum collector-emitter voltage (VCEO) of 60 V and a continuous collector current (IC) of 15 A. It also supports a peak power dissipation of 75 W when properly mounted to a heatsink, making it suitable for robust power switching designs.
How does BD908 perform in a linear regulator circuit at load currents above 5 A?
BD908 can handle pass-element duties in linear regulators up to 15 A continuous current. With a minimum DC current gain (hFE) of 5 at high collector currents, the base drive requirement is relatively high, so a Darlington or pre-driver stage is typically used for currents above 5 A to reduce base drive current demands.
Is BD908 a good choice for motor drive circuits in 24 V industrial equipment?
Yes, BD908 is a strong candidate for 24 V motor drive circuits. Its 60 V VCEO provides ample margin above the 24 V supply to handle inductive voltage spikes, and its 15 A IC rating covers most fractional-horsepower DC motor loads. The TO-220AB package allows straightforward PCB or chassis heatsink mounting for thermal management.
What package does BD908 use and how does it simplify PCB thermal design?
BD908 uses the TO-220AB package, a 3-pin through-hole package with a metal tab for direct heatsink attachment. The tab allows mounting to a standard aluminum extrusion heatsink with a thermal resistance of less than 5°C/W junction-to-case, enabling the device to dissipate up to 75 W at high ambient temperatures.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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