2N2647 SILICON PN UNIJUNCTION TRANSISTOR DESCRIPTION: The 2N2647 is a Unijunction Transistor Used in General Purpose Pulse, Timing, Sense and Trigger Application PACKAGE STYLE TO-18 (MOD) MAXIMUM RATINGS IC 2.0 A (PULSED) VCE 30 V PDISS 300 m W @ TC = 25 OC TJ -65 OC to +125 OC TSTG -65 OC to +150 OC JC 33 OC/W CHARACTERISTICS SYMBOL NONEd O TC = 25 C TEST CONDITIONS V = 10 V rBB V = 3.0 V B2B1 B2B1 MINIMUM TYPICAL MAXIMUM UNITS 0.68 0.82 --- 4.7 9.1 K 0.1 0.9 %/C VB2B1 = 3.0 V VEB1(SAT) V = 10 V I = 50 mA E 3.0 V V = 10 V I = 50 mA E 20 mA V = 30 V I =0 B1 V = 25 V V = 20 V R = 100 B2 8.0 V = 20 V R = 20 B1 6.0 rBB B2B1 IB2(MOD) B2B1 IB2EO B2E IP B2B1 IV B2B1 VOB1 B2B1 O TA = -55 to 125 C 7.0 200 nA 2.0 A 18 mA V * *** !