Philips Semiconductors BU2520AX Data Sheet
Summary
The BU2520AX is a high-voltage, high-speed switching NPN power transistor designed for large-screen color television receivers. This manual provides essential technical specifications, including voltage ratings up to 1500V, current handling of 25A peak, and thermal management details for use in horizontal deflection circuits.
Page 1 Text Content
Philips Semiconductors Product specification
Silicon Diffused Power Transistor BU2520AX
GENERAL DESCRIPTION New generation, 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 k Hz.
QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS TYP. MAX. UNIT VCESM Collector-emitter voltage peak value VBE = 0 V VCEO Collector-emitter voltage (open base) IC Collector current (DC) ICM Collector current peak value Ptot Total power dissipation Ths ≤ 25 ˚C VCEsat Collector-emitter saturation voltage IC = 6.0 A; IB = 1.2 A 5.0 ICsat Collector saturation current 6.0 tf Fall time ICsat = 6.0 A; IB(end) = 0.85 A 0.2 0.35 µs
PINNING - SOT399 PIN CONFIGURATION SYMBOL PIN DESCRIPTION case
collector emitter
case isolated
LIMITING VALUES Limiting values in accordance with the Absolute Maximum Rating System (IEC 134) SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VCESM Collector-emitter voltage peak value VBE = 0 V VCEO Collector-emitter voltage (open base) IC Collector current (DC) ICM Collector current peak value IB Base current (DC) IBM Base current peak value -IB(AV) Reverse base current average over any 20 ms period m A -IBM Reverse base current peak value 1 Ptot Total power dissipation Ths ≤ 25 ˚C Tstg Storage temperature -55 ˚C Tj Junction temperature ˚C
THERMAL RESISTANCES SYMBOL PARAMETER CONDITIONS TYP. MAX. UNIT Rth j-hs Junction to heatsink without heatsink compound 3.7 K/W Rth j-hs Junction to heatsink with heatsink compound 2.8 K/W Rth j-a Junction to ambient in free air K/W
1 Turn-off current.
September 1997 Rev 2.200
Page Summary Contents For Philips Semiconductors BU2520AX Data Sheet
Manual Details
| Brand | Philips |
|---|---|
| Pages | 8 |
| File Size | 62.68 KB |
| Published | June 20, 2026 |
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Frequently Asked Questions
What is the maximum peak collector-emitter voltage?
1500 V (VCESM).
What is the total power dissipation at case temperature ≤25°C?
45 W.
What is the typical fall time for 32 kHz deflection?
0.2 μs (max 0.35 μs).
Are these transistors suitable for life support applications?
No, they are not designed for life support; such use is at own risk.