Overview
The BD437 is an NPN silicon epitaxial-base power transistor manufactured by STMicroelectronics. It is housed in a JEDEC SOT-32 plastic package and is designed for use in medium power linear and switching applications. The transistor is part of a complementary pair, with the PNP type being the BD438. It is suitable for various industrial and power management applications due to its robust performance and reliable operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Base Voltage (VCBO) | 45 | V |
| Collector-Emitter Voltage (VCEO) | 45 | V |
| Collector Current (IC) | 4 | A |
| Collector Peak Current (ICM) | 7 | A (t ≤ 10 ms) |
| Base Current (IB) | 1 | A |
| Total Dissipation at Tc ≤ 25°C (Ptot) | 36 | W |
| Storage Temperature (Tstg) | -65 to 150 | °C |
| Max. Operating Junction Temperature (Tj) | 150 | °C |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.6 | V |
| DC Current Gain (hFE) | 30-140 | - |
| Transition Frequency (fT) | 3 | MHz |
Key Features
- High Collector-Emitter Voltage: Up to 45V, making it suitable for a variety of power applications.
- High Collector Current: Up to 4A, enabling it to handle medium power requirements.
- Low Collector-Emitter Saturation Voltage: 0.6V, which indicates efficient performance in switching applications.
- Robust Thermal Performance: Maximum operating junction temperature of 150°C and total dissipation of 36W at Tc ≤ 25°C.
- Complementary PNP Type: The BD438, allowing for balanced circuit designs.
Applications
- Medium Power Linear Applications: Suitable for use in car-radio output stages and other linear power applications.
- Switching Applications: Ideal for switching circuits due to its high collector-emitter voltage and low saturation voltage.
- Industrial Power Management: Used in various industrial power management systems requiring reliable and efficient power handling.
Q & A
- What is the BD437 transistor?
The BD437 is an NPN silicon epitaxial-base power transistor manufactured by STMicroelectronics, intended for medium power linear and switching applications.
- What is the maximum collector-emitter voltage of the BD437?
The maximum collector-emitter voltage (VCEO) of the BD437 is 45V.
- What is the maximum collector current of the BD437?
The maximum collector current (IC) of the BD437 is 4A.
- What is the complementary PNP type of the BD437?
The complementary PNP type of the BD437 is the BD438.
- What is the maximum operating junction temperature of the BD437?
The maximum operating junction temperature (Tj) of the BD437 is 150°C.
- What is the collector-emitter saturation voltage of the BD437?
The collector-emitter saturation voltage (VCE(sat)) of the BD437 is 0.6V.
- What are the typical applications of the BD437?
The BD437 is typically used in medium power linear applications, switching applications, and industrial power management systems.
- What is the package type of the BD437?
The BD437 is housed in a JEDEC SOT-32 plastic package.
- What is the total dissipation at Tc ≤ 25°C for the BD437?
The total dissipation at Tc ≤ 25°C (Ptot) for the BD437 is 36W.
- What is the transition frequency of the BD437?
The transition frequency (fT) of the BD437 is 3 MHz.
