BU407 NPN Power Transistor (150V-7A)

Description

⚡ BU407 – NPN Power Transistor (High-voltage NPN Bipolar Junction Transistor – BJT) 📌 General Description The BU407 is an NPN silicon power transistor designed for high-voltage, high-speed switching applications, such as horizontal deflection circuits in CRT displays, inverters, power supplies, and motor drivers. It can handle high collector voltages and moderate current, with decent switching speed. ⚙️ Key Specifications Parameter Value Type NPN Bipolar Power Transistor Collector-Emitter Voltage (VCEO) 150V Collector-Base Voltage (VCBO) 200V Emitter-Base Voltage (VEBO) 5V Collector Current (IC) 4A continuous Power Dissipation (PD) ~60W (with heatsink) DC Current Gain (hFE) 15 – 75 Transition Frequency (fT) ~3 MHz (typical) Package Type TO-220 Mounting Through-hole, with heatsink tab 📦 Package – TO-220 Pinout ________ | | Base | 1 | Collector (Tab) | 2 | Emitter | 3 | -------- Pin Name Function 1 Base Control terminal 2 Collector Load current path 3 Emitter Reference / output Tab Collector For heatsinking, same as Pin 2 🧪 Features High collector voltage handling (up to 150V) Moderate current (up to 4A) Fast switching capability Rugged TO-220 package with good thermal dissipation Suitable for flyback converters and CRT deflection 🛠️ Typical Applications CRT monitor horizontal deflection High-voltage switching Inverter circuits Motor driver circuits Flyback converters 🔧 Usage Notes Requires proper base drive for fast switching (often via a resistor and diode for turn-off s