MRF231 (SILICON) The RF Line NPN SILICON RF POWER TRANSISTORS .-- designed for 12.5 Volt, mid-band large-signal amplifier appli- cations in industrial and commercial FM equipment operating in the 40 to 100 MHz range. @ Specified 12.5 Volt, 90 MHz Characteristics Output Power = 3.5 Watts Minimum Gain = 10 dB Efficiency = 55% 30:1 VSWR 100% Tested for Load Mismatch at all Phase Angles with @ Characterized with Series Equivalent Large-Signal Impedance Parameters @ Characterized with Parallel Equivalent Large-Signal Impedance Parameters 3.5 W 90 MHz RF POWER TRANSISTOR NPN SILICON MAXIMUM RATINGS Rating Symbol Value Unit Coliector-Emitter Voltage VcEO 18 Vde Collector-Base Voltage Vcso 36 Vde Emitter-Base Voltage VEBO 40 Vde Collector Current Continuous Ic 1.0 Adc Total Device Dissipation @ Tg = 25C (1} Pp 10 Watts Derate above 25C 57.1 mw/c Storage Temperature Range Tstg -65 to +200 % Stud Torque (2) ~ 6.5 In-Lb, THERMAL CHARACTERISTICS Characteristic Symboi Max Unit Thermal Resistance, Junction to Case Rec 17.6 cw (1) These devices are designed for RF operation. The total device dissipation rating applies only when the devices are operated as Class C RF Amplifiers. {2} For repeated assembly use 5 in-Lb. Lt fay E Ss P =] u SEATING PLANE Sf WRENCH FLAT | bo STYLE] PIN 1. EMITTER 3. EMITTER 4, COLLECTOR NOTE CASE 1454-01 USE 8.32NC2A STUD CASE 1454-01 1291 MRF231 (continued) ELECTRICAL CHARACTERISTICS (T = 25C unless otherwise noted.) [ Characteristic OFF CHARACTERISTICS I Symbot | Min I Max [ Unit Collector-Emitter Breakdown Voltage {Ic = 25 mAde, !g = 0) BYVCEO 18 -~ Vde Colltector-Emitter Breakdown Voltage (I = 25 mAdc, Vag = 0) BVcES 36 - Vde Emitter-Base Breakdown Voltage (le = 0.25 mAdc, Ic = 0) BVEgO 40 - Vde Collector Cutoff Current (Vog = 15 Vde, ie = 0) IcBo - 0.5 mAdc ON CHARACTERISTICS DC Current Gain (Ic = 250 mAde, Vog = 5.0 Vde) hre 5.0 - DYNAMIC CHARACTERISTICS Output Capacitance (Vop = 12.5 Vdc, Ie = 0, f = 1.0 MHz) Cob - 25 pF FUNCTIONAL TESTS (Figure 1) Cammon-Emitter Amplifier Power Gain (Voc = 12.5 Vde, Pout = 3.5 W, f = 90 MHz) GpeE 10 _ dB Collector Efficiency (Voc = 12.5 Vde, Pou: = 3.5 W, f = 90 MHz) n 55 - % Load Mismatch (Voc = 12.5 Vde, Pout = 3.5 W, f = 90 MHz, Tc < 28C) 7 VSWR > 30:1 Through All Phase Angles in 3 Second Interval Gpe Test Limits After Which Devices Will Meet FIGURE 1 90 MHz TEST CIRCUIT SCHEMATIC RF Input RF Output C1,C3 9.0180 pF, ARCO 463 L3 C2,C4 = 25-280 pF, ARCO 464 La cs 1000 pF, UNELCO LS c 0.047 uF, ERIE Disc Ceramic Cc? 10 uF, 15 Vde TANTALUM R1 u1 2 Turns, #18 AWG, 3/8 1.0., 1/2" Long R2 L2 22 MH, 9230-52 MILLER Molded Choke 1.5 KH, 9230-24 MILLER Molded Choke 3 Turns, #18 AWG, 3/8''1.D., 1/2" Long 10 Turns, Wound on R2 15 Ohm, 1/2 W, 10% Carbon 220 Ohm, 1 W, Carbon Input/Output Connectors Type BNC 1292 MRF231 (continued) FIGURE 2 OUTPUT POWER versus INPUT POWER Veco=12.5 nv 2 = o o o Pout. OUTPUT POWER (WATTS) 0 0.1 0.2 03 04 Pin, INPUT POWER (WATTS) FIGURE 4 OUTPUT POWER versus SUPPLY VOLTAGE 80 Pin = 300 mw f = 90 MHz x 2 = 5 S$ 5 Pout. OUTPUT POWER (WATTS) o 8.0 9.0 10 i 12 13 4 15 Vcc, SUPPLY VOLTAGE (VOLTS) 0s 16 1293 5.0 r 2 Pa o o o Pout, OUTPUT POWER {WATTS) o 40 SKOPS 7 Vec = 12.5 Vde L Pout 35H , EXP AXA FIGURE 3 OUTPUT POWER versus FREQUENCY Vec=12.5V 50 60 70 80 90 f, FREQUENCY (MHz) FIGURE 5 SERIES EQUIVALENT IMPEDANCE frees > 9 5 2 BIROS FA InAROD oo 100 MRF231 (continued) FIGURE 6 PARALLEL EQUIVALENT INPUT RESISTANCE versus FREQUENCY 25 Vec = 12.5 Pout = 3.50 i z% zz >o Sw So's a ae a4 few ah a> gz cz a o 40 50 60 70 80 90 100 f, FREQUENCY (MHz) FIGURE 8 PARALLEL EQUIVALENT OUTPUT RESISTANCE versus FREQUENCY 50 Veo = 12.5 Pout = 3.5W s & nN So Rout. PARALLEL EQUIVALENT OUTPUT RESISTANCE (OHMS) 3 40 $0 60 70 80 90 100 f, FREQUENCY (MHz) FIGURE 7 PARALLEL EQUIVALENT INPUT CAPACITANCE versus FREQUENCY 1000 Ver = 12.5 Vde out = 3.5W oe zu wo zu 22 2 ae Zs 3 400 < ek z2 ce & 200 40 50 60 70 80 100 f, FREQUENCY (MHz2} FIGURE 9 -- PARALLEL EQUIVALENT OUTPUT CAPACITANCE versus FREQUENCY 00 Vee = 12.5 Vde Pour= 3.5W 80 60 40 Cout- PARALLEL EQUIVALENT OUTPUT CAPACITANCE (pF) 40 50 60 70 80 300 100 t, FREQUENCY (MHz) 1294