File No. 10 RF Power Transistors UREA 2N1491 Solid State 2N1492 Division 2N1493 RCA-2N1491, 2N1492, and 2N1493 are triple-diffused transistors of the VHF silicon n-p-n type. These transistors are intended for a wide variety of appli- cations in industrial and military electronic equipment. They are particu- Amplifier & larly useful in large-signal power-amplifier, video-amplifier, and oscillator . circuits operating in the HF and VHF regions over wide ranges of ambient Oscillator temperature. Service RATINGS . . . JEDEC Maximum Ratings, Absolute-Maximum Values: T0-39 2N1491 2N1492 2N1493 COLLECTOR-TO-BASE VOLTAGE ... Vopo 30 60 100 max. V e High Vcp Ratings up to 100 V COLLECTOR-TO-EMITTER VOLTAGE: With emitter-to-base reverse biased. . Yory 30 60 100 max. V e High Transistor -Dissipation EMITTER-TO-BASE WNT TAGE. sees VEBO 1 2 45 max. V Rati to 3 watt COLLECTOR CURRENT..... I 500 500 500 max. mA arings up to 9 watts EMITTER CURRENT ... rie 500 500 500 max. mA TRANSISTOR DISSIPATION, See Fig.3: Pip Operation in free air: High Typical fy at I = 25 mA - up to 380 MHz Ambient temperature = 25C ... 0.5 0.5 0.5 max. W } Ambient temperature = 100C... 0.25 = 0.25 0.25 max. W e High Typical Power Gain at peration with heat sink: _ Case temperature = 25C ..... 3 3 3 max. W 70 MHz up to 12 db at Case temperature = 1009C,.,.. 1.5 1.5 15 max. W 500-mW output AMBIENT TEMPERATURE RANGE: Operating and storage .......... 65 to +175 C e JEDEC TO0-39 Package ELECTRICAL CHARACTERISTICS, Ambient Temperature = 25 C TEST CONDITIONS LIMITS Dc pc Type Type Type Characteristics Symbol | Collector | collector} Emitter | 2N1491 2N1492 2ni493 | (Units ( Ite). Current Current (mA) (mA) v v Min, | Max. | Min. | Max. | Min. | Max. cB cE Collector Breakdown Voltage BVopo 0.1 0 30 60 100 volta Collector Cutoff Current lopo 12 0 10 10 10 HA Emitter Cutoff Vv, Current lgBo EP 0 100 100 100 BA Collector-to-Base and Stem Capacitance ~~ 30 9 5 5 5 pF Small-Signal Current Transfer Ratio: hy, 20 15 15 200 15 200 15 | 200 at 1 KHz Power Gain at 70 MHz Power Output (mW) See Fig.11 = 10 PG 20 15 13 dB = 100 30 15 13 dB = 500 50 25 10 dB Thermal Resistance Junction-to-case Rp 50 50 50 cw 24 5-66 File No. 10 2N1491--2N 1493 PERFORMANCE CHARACTERISTICS DISSIPATION DERATING GRAPH CB=COMMON-BASE CIRCUIT,EMITTER INPUT. CE*COMMON-EMITTER CIRCUIT,BASE INPUT. COLLECTOR~TO-EMITTER VOLTS=25 EMITTER MILLIAMPERES=15 POWER OUTPUT (MILLIWATTS)=10 AMBIENT TEMPERATURE (C)=25 50 40 PHL ce! i a8 30 20) POWER GAIN [ yf Y E 2 = | 5 & G wn 6 ae S gE w 6 z a FE = 2 = x a 2 or 2 8 io # B92 2 103 FREQUENCY MHz TEMPERATURE - C 92CSIOSI7RI Fi 9. 1 92CS-10806R2 Fig. 3 TYPICAL COLLECTOR CHARACTERISTICS TYPICAL CHARACTERISTICS COMMON EMITTER CIRCUIT, BASE INPUT. AMBIENT TEMPERATURE = 25C COMMON-EMITTER CIRCUIT, BASE INPUT. COLLECTOR-TO-EMITTER VOLTS=30 AMBIENT TEMPERATURE (C)=25 w Ww [4 w a = s a a 2 5 u Ww a Vv o 0.2 a4 O6 0.8 BASE -TO-EMITTER VOLTS 92C$-10808 Fig. 4 TYPICAL DC BETA CHARACTERISTICS COLLECTOR-TO-EMITTER VOLTS (VCE) #10 rT) Yr )\ FREE-AIR TEMPERATURE (Tra)s 25 C oo] T 2 a 3 > oe w # E = iu ' e t fr Fe oO ws a) 3 5 3 40 T | 20 IOC FORWARD-CURRENT TRANSFER RATIO (he; 9g o.0r Ol [Ke 10 100 1000 MILLI. f COLLECTOR AMPERES COLLECTOR CURRENT (Ic) - MILLIAMPERES 92LM-1497 Fig. 2 Fig. 5 92CS-12280 25 2N14912N1493 File No. 10 TYPICAL SMALL-SIGNAL OPERATION CHARACTERISTICS CASE TEMPERATURE (Tc }=25 C FREQUENCY #50 MHz TOEMITTER VCE. TEMPERATURE (Tc) = 25C = 50 MHz PRODUCT fr (Mc)= GAIN BANDWIOTH PRODUCT ( 320 COLLECTOR CURRENT (I} MILLIAMPERES [e) o 0 2 3 40 5S 6 7 8 490 100 COLLECTOR-TO-EMITTER VOLTS (VceE) COLLECTOR CURRENT (Ic ) MILLIAMPERES 92CS-12286 Fig. 6 Fig. 7 9208-12287 FREQUENCY +50 MH CASE RISER TURE (1, no a a & 2 < | 7 a 2 w 3 rE { n a z ] o w 8 2 a | Fb 2 9 & 2 COLLECTOR-TO-BASE VOLTS (Vcg) COLLECTOR CURRENT (I }MILLIAMPERES Fig. 8 92CS -12283R1 92cs-12z684 Fig. 9 VVe2eo) ~~~" = Sob I4oo ) 77s Vee = 28V (ea) Hie (real) Vee = 28V CASE TEMPERATURE (Tc)}=25 C CHMS g PICOFARADS + 8 REAL PART OF OUTPUT IMPEDANCE |I/Y22 (real) aw bo oF % ne SE soot a 400: ag < a ge ad te 2 OUTPUT IMPEDANCE 8 QUTPUT CAPACITANCE (Cop) 1d 130. 180. COLLECTOR CURRENT (I)MILLIAMPERES FREQUENCY Mc 92CS~-i2289RI 92CS-12288R) Fig. 10 Fig. 11 26 File No. 10 2N14912N1493 POWER GAIN TEST CIRCUIT OUTPUT (LOAD=50. } INPUT (SOURCE =50.) TI! tt 2 EMITTER COLLECTOR SUPPLY SUPPLY 92LS-1496 Cy: 3-20 pF variable Cy CE: 0.01 uF Cy: 3-20 pF variable C,: 7-100 pF variable Cee 3-20 pF variable Q: All Types Ty: 8 turns No.24 wire tapped at 1 turn + 8 turns No.24 wire tapped at 2.5 turns 2 Fig, 12 DIMENSIONAL OUTLINE JEDEC TO-39 370 MAX. 335 MIN. DIA -335 MAX. .305 MIN, ae] 100 ~) te , : ids | SEATING PLANE TERMINAL CONNECTIONS 009 To $ $ 125 4 U Man. Lead No.3 Emitter GETAILS OF OUT- iE _ ZONE OPTIONAL eaes Lead No.2 ~ Base 0: O19 MAX. Case, Lead No.3 Collector O16 MIN, OA. EAD INSULATING LET: TE 400 OUTSIDE + CORNER RADI 007 MAX. .034 MAX. .028 MIN. \Y4 048 MAX. INDEX TAB 029 MIN. 9208-12742, DIMENSIONS IN INCHES 27