STMICROELECTRONICS BD135 NPN Transistor, TO126 Package
STM BD135 NPN transistor for audio amplifiers & drivers. 45V, 1.5A, TO126 package. Complementary to BD136. For through-hole PCBs.
The STMICROELECTRONICS BD135 is an NPN low-voltage transistor manufactured using epitaxial planar technology. This component is specifically engineered for high-fidelity audio amplifiers and driver stages, making it an ideal choice for complementary or quasi-complementary circuit designs.
Offering excellent linearity and gain, the BD135 provides stable performance in audio applications, ensuring clear sound reproduction. Its robust construction allows it to handle significant power within its specified limits, contributing to the reliability of the final electronic assembly.
Key Specifications & Features
- Transistor Type: NPN
- Complementary Part: BD136 (PNP)
- Maximum Collector-Emitter Voltage (VCE): 45V
- Continuous Collector Current (IC): 1.5A
- Maximum Power Dissipation (Ptot): 1.25W
- DC Current Gain (hFE Min): 250
- Base Current: 0.5A
- Package / Case Style: TO-126
- Mounting Type: Through Hole
- Pin Count: 3 Pins
- Maximum Operating Temperature: 150°C
- Thermal Resistance (Junction-to-Case): 10°C/W
- Thermal Resistance (Junction-to-Ambient): 100°C/W
With its through-hole mounting and standard TO-126 package, the BD135 is easy to handle and install on printed circuit boards (PCBs), suitable for both prototyping and volume production. Its defined electrical characteristics make it a dependable and widely used component in professional and hobbyist audio electronics.
- Audio amplifiers
- Audio driver stages
- Complementary output circuits
- Quasi-complementary output circuits
- Transistor Polarity: NPN
- Collector-Emitter Voltage Max: 45V
- Continuous Collector Current: 1.5A
- Power Dissipation: 1.25W
- DC Current Gain hFE Min: 25
- Base Current: 0.5A
- Transistor Case Style: TO-126
- Transistor Mounting: Through Hole
- No. of Pins: 3 Pins
- Operating Temperature Max: 150°C
- Junction-to-Case Thermal Resistance: 10°C/W
- Junction-to-Ambient Thermal Resistance: 100°C/W
- Complementary Part: BD136
- Technology: Epitaxial Planar
- Dimensions (H x W x D): 43mm x 33mm x 15mm
- Weight: 0.64 grams
- of Pins: 3Pins
- SVHC: No SVHC (25-Jun-2025)
Documents
Always follow local regulations and product guidance.
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