Overview
The BD135 is a NPN low voltage transistor manufactured by STMicroelectronics, built using epitaxial planar technology. It is designed primarily for use in audio amplifiers and drivers, particularly in complementary or quasi-complementary circuits. This transistor is part of the BD series, which includes other models like BD131, BD137, and BD139, along with their PNP counterparts.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Transistor Polarity | NPN | - |
| Collector Emitter Voltage Max (Vce) | 45 | V |
| Continuous Collector Current (Ic) | 1.5 | A |
| Power Dissipation (Pc) | 12.5 | W |
| Transistor Case Style | TO-126 | - |
| No. of Pins | 3 | - |
| DC Current Gain hFE Min | 40 | hFE |
| Operating Temperature Max | 150 | °C |
| Transition Frequency (fT) | 190 MHz | - |
| Collector-Base Voltage (Vcb) | 45 | V |
| Emitter-Base Voltage (Veb) | 5 | V |
Key Features
- High current capability up to 1.5A, making it suitable for driving various loads such as high-power LEDs, relays, and other high-power components.
- Low voltage operation with a maximum collector-emitter voltage of 45V.
- Epitaxial planar technology for robust performance and reliability.
- Complementary to BD136, allowing for use in complementary or quasi-complementary circuits.
- Wide operating temperature range from -55°C to +150°C.
- High DC current gain (hFE) with minimum values ranging from 40 to 250, depending on the specific gain version.
Applications
- AUDIO AMPLIFIERS: Designed for use in audio amplifiers and drivers, particularly in complementary or quasi-complementary circuits.
- SWITCHING AND AMPLIFICATION: Suitable for a wide range of switching and amplification applications due to its high current and low voltage capabilities).
- COMMERCIAL AND EDUCATIONAL CIRCUITS: Can be used in commercial products, educational projects, and hobby electronic circuits).
- OUTPUT STAGES OF MICROCONTROLLERS: Ideal for use at the output of microcontrollers and other integrated circuits with low current outputs).
Q & A
- What is the maximum collector current of the BD135 transistor?
The maximum collector current of the BD135 transistor is 1.5A).
- What is the maximum collector-emitter voltage of the BD135 transistor?
The maximum collector-emitter voltage of the BD135 transistor is 45V).
- What is the power dissipation of the BD135 transistor?
The power dissipation of the BD135 transistor is 12.5W).
- What is the operating temperature range of the BD135 transistor?
The operating temperature range of the BD135 transistor is from -55°C to +150°C).
- What is the DC current gain (hFE) range of the BD135 transistor?
The DC current gain (hFE) of the BD135 transistor ranges from 40 to 250, depending on the specific gain version).
- What is the package type of the BD135 transistor?
The BD135 transistor comes in a TO-126 package).
- Can the BD135 transistor be used as a switch?
Yes, the BD135 transistor can be used as a switch to drive loads up to 1.5A).
- What are some common applications of the BD135 transistor?
The BD135 transistor is commonly used in audio amplifiers, switching circuits, and as a driver for various loads).
- Is the BD135 transistor RoHS compliant?
Yes, the BD135 transistor is RoHS compliant).
- What is the transition frequency of the BD135 transistor?
The transition frequency of the BD135 transistor is 190 MHz).
