KSA1281 is an audio power amplifier with a collector power dissipation of 1W and a 3 watt output application. The absolute maximum ratings include collector power dissipation, junction temperature, storage temperature, etc. The electrical characteristics include collector-base breakdown voltage, collector-emitter breakdown voltage, emitter-base breakdown voltage, collector cut-off current, emitter cut-off current, DC current gain, base-emitter saturation voltage, etc.