Overview
The MJE350 is a silicon planar PNP transistor manufactured by STMicroelectronics, designed for medium power linear and switching applications. It is the complementary PNP type to the MJE340 NPN transistor and is mounted in the SOT-32 (TO-126) package. This transistor is versatile and can handle high voltage loads up to 300V, making it suitable for a wide range of electronic applications, including high-voltage DC circuits, switching power supplies, and linear power supply circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Base Voltage (VCBO) | 300 | V |
| Collector-Emitter Voltage (VCEO) | 300 | V |
| Emitter-Base Voltage (VEBO) | 3 | V |
| Collector Current (IC) | 0.5 A | A |
| Total Dissipation at Tc ≤ 25 °C (PTOT) | 20.8 W | W |
| Storage Temperature (Tstg) | -65 to 150 °C | °C |
| Max Operating Junction Temperature (TJ) | 150 °C | °C |
| Thermal Resistance Junction-Case (RthJC) | 6.0 °C/W | °C/W |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.5 V | V |
| Emitter-Base On Voltage (VBE(on)) | 1 V | V |
| DC Current Gain (hFE) | 30 to 240 | |
| Transition Frequency | 4 MHz | MHz |
Key Features
- Complementary PNP transistor to the MJE340 NPN transistor.
- Mounted in SOT-32 (TO-126) package, offering efficient heat dissipation and a compact design.
- High voltage handling capability up to 300V, making it suitable for high-voltage DC applications.
- Maximum collector current of 0.5 A, suitable for applications requiring higher currents.
- DC current gain (hFE) ranges from 30 to 240, providing flexible options for amplification needs.
- Operating temperature range from -65°C to 150°C, ensuring reliability in both low and high-temperature environments.
- ROHS compliant and lead-free, meeting environmental standards.
Applications
- Inverter and UPS circuits: Helps manage the transition between AC and DC power, ensuring a smooth and reliable power supply.
- Switching power supplies: Controls the on-and-off cycles to regulate voltage and current levels, minimizing energy loss and improving efficiency.
- Linear power supply circuits: Maintains a steady voltage output, making it suitable for applications requiring precise voltage regulation).
- Battery charger circuits: Regulates charging cycles to ensure safe and efficient battery charging).
- Audio systems: Can be used as an amplifier to boost audio signals and drive speakers or other output devices).
- Motor controller circuits: Helps manage the flow of current to drive motors, supporting precise control of motor speed and operation).
- High-voltage DC switching applications: Switches DC currents on and off with high reliability, useful in circuits requiring high voltage control).
Q & A
- What is the MJE350 transistor used for?
The MJE350 is used in medium power linear and switching applications, including high-voltage DC circuits, switching power supplies, and linear power supply circuits.
- What is the maximum collector-emitter voltage of the MJE350?
The maximum collector-emitter voltage (VCEO) of the MJE350 is 300V).
- What is the maximum collector current of the MJE350?
The maximum collector current (IC) of the MJE350 is 0.5 A).
- What is the package type of the MJE350?
The MJE350 is mounted in the SOT-32 (TO-126) package).
- What is the operating temperature range of the MJE350?
The operating temperature range of the MJE350 is from -65°C to 150°C).
- Is the MJE350 ROHS compliant?
Yes, the MJE350 is ROHS compliant and lead-free).
- What are some common applications of the MJE350?
Common applications include inverter and UPS circuits, switching power supplies, linear power supply circuits, battery charger circuits, audio systems, and motor controller circuits).
- What is the DC current gain (hFE) range of the MJE350?
The DC current gain (hFE) of the MJE350 ranges from 30 to 240).
- What is the transition frequency of the MJE350?
The transition frequency of the MJE350 is 4 MHz).
- How should the MJE350 be used to ensure safe operation?
To ensure safe operation, use the MJE350 at about 20% below its maximum ratings, and consider using a heatsink. It should be kept between -65°C and +150°C for best performance).
