BU2525AF BJT NPN Power Transistor 800V 12A SOT-199

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BU2525AF BJT NPN Power Transistor 800V 12A SOT-199 The BU2525AF is a high-voltage, high-current NPN bipolar junction power transistor designed for horizontal deflection and switching applications. With a collector-emitter voltage rating of 800V and a collector current capacity of 12A, it provides excellent performance in demanding power circuits. Housed in a SOT-199 (ISOWATT218) isolated package, it ensures efficient heat dissipation and enhanced durability. Its fast switching speed, integrated protection features, and rugged construction make it highly reliable for use in CRT television line output stages, power supplies, and other high-voltage applications. Features High collector-emitter voltage up to 800V. Continuous collector current rating of 12A. Low saturation voltage for efficient operation. High-speed switching capability for line output circuits. Integrated damper diode for added protection. Excellent thermal performance in SOT-199 (ISOWATT218) isolated package. Designed for horizontal deflection in CRT TVs and monitors. Rugged and reliable construction for long service life. Specifications Attribute Details Category BJT Power Transistor Transistor Type NPN Datasheet BU2525AF Package Type SOT-199 Mounting Style Through-Hole, Isolated Package Collector-Emitter Voltage (Vceo) 800 V Collector-Base Voltage (Vcb) 1500 V Emitter-Base Voltage (Veb) 8 V Collector Current (continuous) (Ic) 12 A Peak Collector Current (Icm) 25 A Power Dissipation (Pd) 45 W (at Tc = 25°C) DC Current Gain (hFE) 7 (at Ic = 8 A, Vce = 5 V) Transition Frequency (fT) 4 – 5 MHz Storage Time (ts) 3 µs Fall Time(tf) 0.2 µs Operating Temperature -65°C to +150°C Dimensions Applications Horizontal deflection circuits in CRT televisions and monitors. High-voltage, high-speed switching circuits. Flyback converters and line output stages. Power supply circuits requiring high-voltage switching. Inductive load driving (transformers, coils, motors). Voltage regulation in high-voltage supplies. Pulse and transient switching applications. Replacement part for legacy CRT TV repair and maintenance. Package Contents 1 x BU2525AF BJT NPN Power Transistor 800V 12A SOT-199 Datasheet BU2525AF