2n2218 2n2219.pdf datasheet:

TECHNICAL DATA NPN SWITCHING SILICON TRANSISTOR Qualified per MIL-PRF-19500/251 Devices Qualified Level JAN 2N2218 2N2219 JANTX 2N2218A 2N2219A JANTXV 2N2218AL 2N2219AL JANS MAXIMUM RATINGS 2N2218 2N2218A; L Ratings Symbol Unit 2N2219 2N2219A; L Collector-Emitter Voltage 30 50 Vdc VCEO Collector-Base Voltage 60 75 Vdc VCBO TO- 39* (TO-205AD) Emitter-Base Voltage 5.0 6.0 Vdc VEBO 2N2218, 2N2218A Collector Current 800 mAdc IC 2N2219, 2N2219A Total Power Dissipation @ T = +250C(1) 0.8 W APT @ T = +250C(2) 3.0 W C0Operating & Storage Junction Temp. Range -55 to +200 C Top, Tstg THERMAL CHARACTERISTICS Characteristics Symbol Max. Unit 0Thermal Resistance, Junction-to-Case 59 C/W RJC TO-5* 1) Derate linearly 4.6 mW/0C above T > +250C A 2N2218AL, 2) Derate linearly 17.0 mW/0C above T > +250C C2N