Overview
The BUV48A is a high-voltage, fast-switching NPN power transistor manufactured by STMicroelectronics. This device is designed for high-current capability and fast switching speeds, making it suitable for various industrial and switching applications. The transistor is mounted in a TO-247 plastic package and is particularly suited for line-operated switchmode applications such as switching mode power supplies, flyback and forward single transistor low power converters, and other high-voltage, high-speed power switching circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Collector-Emitter Voltage (VCE) | 450 | V |
| Collector-Emitter Voltage (VCE) with RBE = 10 Ω | 1000 | V |
| Emitter-Base Voltage (VEB) | 7 | V |
| Collector Current (IC) | 15 | A |
| Peak Collector Current (ICM) | 30 | A |
| Non-Repetitive Peak Collector Current (ICP) | 55 | A |
| Base Current (IB) | 4 | A |
| Peak Base Current (IBM) | 20 | A |
| Total Power Dissipation at Tcase = 25 °C | 125 | W |
| Maximum Operating Junction Temperature (TJ) | 150 | °C |
| Thermal Resistance Junction-Case (RthJC) | 1 | °C/W |
| Transition Frequency (ft) | 5 | MHz |
| Collector Capacitance (Cc) | 250 | pF |
| DC Current Gain (hFE) | 5 (min) | - |
Key Features
- High current capability up to 15 A and peak current up to 30 A.
- Fast switching speed with turn-on time of 1 µs, storage time of 3 µs, and fall time of 0.8 µs.
- High voltage capability with collector-emitter voltage up to 1000 V and collector-emitter sustaining voltage up to 450 V.
- Mounted in a TO-247 plastic package, suitable for through-hole technology (THT).
- High thermal dissipation with a total power dissipation of 125 W at Tcase = 25 °C.
- Robust device performance with minimal lot-to-lot variations, ensuring reliable operation.
Applications
- Switching mode power supplies.
- Flyback and forward single transistor low power converters.
- Industrial applications from single and three-phase mains.
- Inverters and motor control systems.
- Solenoid and relay drivers.
- Deflection circuits.
Q & A
- What is the maximum collector-emitter voltage of the BUV48A transistor?
The maximum collector-emitter voltage (VCE) is 450 V, and with RBE = 10 Ω, it is 1000 V.
- What is the maximum collector current of the BUV48A transistor?
The maximum collector current (IC) is 15 A, with a peak collector current (ICM) of 30 A).
- What is the thermal resistance junction-case (RthJC) of the BUV48A transistor?
The thermal resistance junction-case (RthJC) is 1 °C/W).
- What are the typical applications of the BUV48A transistor?
The BUV48A is typically used in switching mode power supplies, flyback and forward single transistor low power converters, and industrial applications from single and three-phase mains).
- What is the package type of the BUV48A transistor?
The BUV48A is mounted in a TO-247 plastic package).
- What is the maximum operating junction temperature of the BUV48A transistor?
The maximum operating junction temperature (TJ) is 150 °C).
- What are the switching times of the BUV48A transistor?
The turn-on time is 1 µs, the storage time is 3 µs, and the fall time is 0.8 µs).
- What is the DC current gain (hFE) of the BUV48A transistor?
The DC current gain (hFE) is a minimum of 5).
- What is the total power dissipation of the BUV48A transistor at Tcase = 25 °C?
The total power dissipation is 125 W at Tcase = 25 °C).
- Is the BUV48A transistor suitable for high-voltage applications?
Yes, the BUV48A is designed for high-voltage applications, with a collector-emitter voltage up to 1000 V and collector-emitter sustaining voltage up to 450 V).
