2SA1213是日本产品，且属于电流型驱动器件,不建议大家使用，如果你的用途是开关电路，且电源电压在12V以下，电流在2A以下，建议使用SOT-23封装的MOSFET GL3401间接替代,详细资料请点这里访问(含PDF文件下载)
http://www.18ic.com/datasheet/mosfet/gl3401.html

TOSHIBA Transistor Silicon PNP Epitaxial Type (PCT process)
2SA1213
Power Amplifier Applications
Power Switching Applications
. Low saturation voltage: VCE (sat) = .0.5 V (max) (IC = .1 A)
. High speed switching time: tstg = 1.0 μs (typ.)
. Small flat package
. PC = 1.0 to 2.0 W (mounted on a ceramic substrate)
. Complementary to 2SC2873
Absolute Maximum Ratings (Ta = 25°C)

Characteristics Symbol Rating Unit
Collector-base voltage VCBO 50 V
Collector-emitter voltage VCEO 50 V
Emitter-base voltage VEBO 5 V
Collector current IC 2 A
Base current IB 0.4 A
PC 500 mWCollector power dissipation PC
Weight: 0.05 g (typ.)