2N 1539 thru 1548 2N (GERMANIUM) 2N1539A thru 2N1542A, 2N1544A thru 2N1547A PNP germanium power transistors for switching and amplifier applications in high-reliability equipment. CASE 11 (TO-3) CASE 4-04 (TO-41) MAXIMUM RATINGS For units with solder lugs attached, specify devices MP1539, A etc. (TO-41 package) Rating Symbol 2N1539 2N1544 2N1540 2N1545 2N1541 2N1546 2N1542 2N1547 Collector-Emitter Voltage VCEO 20 Collector-Emitter Voltage VCES 30 Collector-Emitter Voltage .