Overview
The BD243B is an NPN epitaxial silicon transistor manufactured by Fairchild Semiconductor. This transistor is designed for medium power linear and switching applications. It is part of the BD243 series, which includes the BD243, BD243A, BD243B, and BD243C, each with different voltage ratings. The BD243B is particularly noted for its high collector-emitter voltage and current handling capabilities, making it suitable for a variety of power management and control circuits.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Collector-Base Voltage (VCBO) | 80 | V |
| Collector-Emitter Voltage (VCEO) | 80 | V |
| Emitter-Base Voltage (VEBO) | 5 | V |
| Collector Current (DC) (IC) | 6 | A |
| Collector Current (Pulse) (ICP) | 10 | A |
| Base Current (IB) | 2 | A |
| Collector Dissipation (PC) | 65 | W |
| Junction Temperature (TJ) | 150 | °C |
| Storage Temperature (TSTG) | -65 to 150 | °C |
| Collector-Emitter Sustaining Voltage (VCEO(sus)) | 80 | V |
| Collector Cut-off Current (ICEO) | 0.7 | mA |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 1.5 | V |
| Base-Emitter ON Voltage (VBE(on)) | 2 | V |
| DC Current Gain (hFE) | 15 to 30 | - |
Key Features
- High Collector-Emitter Voltage: The BD243B can handle up to 80V, making it suitable for high-voltage applications.
- High Collector Current: It can handle a continuous collector current of 6A and a pulse current of 10A.
- High Power Dissipation: The transistor has a collector dissipation of 65W at 25°C.
- Wide Operating Temperature Range: It can operate within a junction temperature range of -65°C to 150°C.
- Complementary Transistors: The BD243B is complementary to the BD244B, making it versatile for various circuit designs.
- TO-220 Package: It is packaged in a TO-220AB plastic/epoxy case, which is widely used in power electronics.
Applications
- Power Management: Suitable for power supply circuits, voltage regulators, and power amplifiers.
- Switching Circuits: Used in switching applications such as motor control, relay drivers, and power switches.
- Linear Amplifiers: Can be used in linear amplifier circuits where high current and voltage handling are required.
- Automotive Electronics: Applicable in automotive systems for various control and power management functions.
- Industrial Control Systems: Used in industrial control systems for driving motors, solenoids, and other high-current devices.
Q & A
- What is the maximum collector-emitter voltage of the BD243B transistor?
The maximum collector-emitter voltage (VCEO) of the BD243B transistor is 80V.
- What is the continuous collector current rating of the BD243B?
The continuous collector current (IC) rating of the BD243B is 6A.
- What is the pulse collector current rating of the BD243B?
The pulse collector current (ICP) rating of the BD243B is 10A.
- What is the base current rating of the BD243B?
The base current (IB) rating of the BD243B is 2A.
- What is the collector dissipation power of the BD243B at 25°C?
The collector dissipation power (PC) of the BD243B at 25°C is 65W.
- What is the junction temperature range of the BD243B?
The junction temperature range (TJ) of the BD243B is -65°C to 150°C.
- What is the storage temperature range of the BD243B?
The storage temperature range (TSTG) of the BD243B is -65°C to 150°C.
- What is the typical DC current gain (hFE) of the BD243B?
The typical DC current gain (hFE) of the BD243B ranges from 15 to 30.
- What is the collector-emitter saturation voltage (VCE(sat)) of the BD243B?
The collector-emitter saturation voltage (VCE(sat)) of the BD243B is 1.5V.
- What package type is the BD243B transistor available in?
The BD243B transistor is available in a TO-220AB plastic/epoxy package.
- Is the BD243B transistor still in production?
The BD243B transistor has been discontinued by Fairchild Semiconductor, but remaining stock may still be available from various distributors.
