2sa1577.pdf datasheet:

SMD Type TransistorsPNP Transistors2SA1577 Features Large IC. CMax.=-500mA Low VCE(sat).Ideal for low-voltage operation. Complements the 2SC4097.1.Base2.Emitter3.Collector Absolute Maximum Ratings Ta = 25Parameter Symbol Rating Unit Collector - Base Voltage VCBO -40 Collector - Emitter Voltage VCEO -32 V Emitter - Base Voltage VEBO -5 Collector Current - Continuous IC -500 mA Collector Power Dissipation PC 200 mW Junction Temperature TJ 150 Storage Temperature range Tstg -55 to 150 Electrical Characteristics Ta = 25Parameter Symbol Test Conditions Min Typ Max Unit Collector- base breakdown voltage VCBO Ic= -100 A IE=0 -40 Collector- emitter breakdown voltage VCEO Ic= -1 mAIB=0 -32 V Emitter - base breakdown voltage VEBO IE= -100A IC=0 -5 Collector-base cut-off current ICBO VCB= -20 V , IE=0 -1