BU2520AX is a high-voltage, high-speed switching npn transistor in a plastic full-pack envelope intended for use in horizontal deflection circuits of large screen colour television receivers up to 32 kHz.
The BU2520AX is a silicon diffused NPN power transistor designed for high‑voltage, high‑speed switching in horizontal deflection circuits of large‑screen colour TV receivers. It is supplied in a plastic full‑pack (SOT399) envelope.
Key specifications include a collector‑emitter voltage rating of 1500 V, a continuous collector current of 10 A (25 A peak), and a maximum power dissipation of 45 W. Thermal resistance values, saturation voltages, and storage temperature limits are also detailed for reliable operation.
| Collector‑emitter voltage (peak) | 1500 V |
|---|---|
| Collector‑emitter voltage (open base) | 800 V |
| Collector current (DC) | 10 A |
| Collector current peak | 25 A |
| Base current (DC) | 6 A |
| Storage temperature range | -55 °C to 150 °C |
| Maximum junction temperature | 150 °C |
| Thermal resistance (junction‑to‑heatsink, no compound) | 3.7 K/W |
The BU2520AX can withstand a peak collector‑emitter voltage of 1500 V.
The device may be stored between –55 °C and +150 °C.
It is 3.7 K/W.