View 2sc1518 e datasheet:

Transistor 2SC1518 Silicon NPN epitaxial planer type For high-frequency bias oscillation of tape recorders Unit: mm For DC-DC converter 5.9± 0.2 4.9± 0.2 Features Low collector to emitter saturation voltage VCE(sat). Satisfactory operation performances and high efficiency with a low-voltage power supply. 0.7± 0.1 2.54± 0.15 Absolute Maximum Ratings (Ta=25?C) Parameter Symbol Ratings Unit Collector to base voltage VCBO 25 V Collector to emitter voltage VCEO 20 V +0.2 +0.2 0.45–0.1 0.45–0.1 1.27 1.27 Emitter to base voltage VEBO 5 V 1:Emitter Peak collector current ICP 1.5 A 2:Collector 1 2 3 3:Base Collector current IC 1 A EIAJ:SC–51 Collector power dissipation PC 1 W TO–92L Package Junction temperature Tj 150 ?C Storage temperature Tstg –55 ~ +150 ?C Electri