Overview
The BD237G is an NPN bipolar power transistor manufactured by onsemi. It is designed for medium power applications, particularly in the range of 5.0 to 10 W audio amplifiers and drivers. This transistor is part of a complementary set that includes the BD234 (PNP) and BD238 (PNP) devices, making it suitable for use in complementary or quasi-complementary circuits.
The BD237G is housed in a TO-225-3 package and is available in Pb-free versions, making it compliant with current environmental regulations.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Collector-Base Voltage (VCBO) | 100 | V |
| Collector-Emitter Voltage (VCEO) | 80 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (IC) - Continuous | 2 | A |
| Collector Current (IC) - Pulse | 6 | A |
| Collector Dissipation (PC) | 25 | W |
| Junction Temperature (TJ) | 150 | °C |
| Storage Temperature (TSTG) | -65 to 150 | °C |
| DC Current Gain (hFE) | 40 (Min) @ IC = 0.15 A | |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.6 | V |
| Base-Emitter ON Voltage (VBE(on)) | 1.3 | V |
| Current Gain Bandwidth Product (fT) | 3 | MHz |
Key Features
- High Current Capability: The BD237G can handle a continuous collector current of 2 A and a pulse current of 6 A, making it suitable for medium power applications.
- High Voltage Handling: With a collector-emitter voltage rating of 80 V, this transistor is robust and can handle high voltage requirements.
- Low Saturation Voltage: The transistor has a low collector-emitter saturation voltage of 0.6 V, which is beneficial for reducing power losses in switching applications.
- Complementary Devices: The BD237G is part of a set of complementary transistors, including the BD234 and BD238, which are useful for designing push-pull amplifiers and other complementary circuits.
- Pb-Free Packages: Available in lead-free packages, making it compliant with environmental regulations.
Applications
- Audio Amplifiers: Designed for use in 5.0 to 10 W audio amplifiers and drivers.
- Switching Applications: Suitable for various switching applications due to its low saturation voltage and high current handling capability.
- Power Supplies: Can be used in power supply circuits that require medium power handling.
- Motor Control: Applicable in motor control circuits where high current and voltage handling are necessary.
Q & A
- What is the maximum collector current of the BD237G transistor?
The maximum continuous collector current is 2 A, and the maximum pulse collector current is 6 A.
- What is the collector-emitter voltage rating of the BD237G?
The collector-emitter voltage rating is 80 V.
- What is the typical DC current gain (hFE) of the BD237G?
The minimum DC current gain (hFE) is 40 at IC = 0.15 A.
- What is the collector-emitter saturation voltage (VCE(sat)) of the BD237G?
The collector-emitter saturation voltage is 0.6 V.
- Is the BD237G available in Pb-free packages?
- What are the complementary devices to the BD237G?
The complementary devices are the BD234 (PNP) and BD238 (PNP).
- What is the junction temperature range of the BD237G?
The junction temperature range is up to 150°C.
- What is the storage temperature range of the BD237G?
The storage temperature range is from -65°C to 150°C.
- What is the current gain bandwidth product (fT) of the BD237G?
The current gain bandwidth product is 3 MHz.
- In what type of package is the BD237G available?
The BD237G is available in a TO-225-3 package.
