MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by MRF426/D
The RF Line
NPN Silicon
RF Power Transistor
. . . designed for high gain driver and output linear amplifier stages in 1.5 to 30 MHz HF/SSB equipment.
•Specified 28 Volt, 30 MHz Characteristics Ð Output Power = 25 W (PEP)
Minimum Gain = 22 dB Efficiency = 35%
•Intermodulation Distortion @ 25 W (PEP) Ð IMD = ±30 dB (Max)
•100% Tested for Load Mismatch at all Phase Angles with 30:1 VSWR
•Class A and AB Characterization
•BLX 13 Equivalent
MAXIMUM RATINGS
MRF426
25 W (PEP), 30 MHz
RF POWER
TRANSISTOR
NPN SILICON
CASE 211±07, STYLE 1
Rating |
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Symbol |
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Value |
Unit |
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Collector±Emitter Voltage |
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VCEO |
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35 |
Vdc |
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Collector±Base Voltage |
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VCBO |
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65 |
Vdc |
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Emitter±Base Voltage |
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VEBO |
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4.0 |
Vdc |
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Collector Current Ð Continuous |
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IC |
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3.0 |
Adc |
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Withstand Current Ð 5 s |
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Ð |
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6.0 |
Adc |
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Total Device Dissipation @ TC = 25°C (1) |
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PD |
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70 |
Watts |
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Derate above 25°C |
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0.4 |
W/°C |
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Storage Temperature Range |
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Tstg |
± 65 to +150 |
°C |
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THERMAL CHARACTERISTICS |
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Characteristic |
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Symbol |
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Max |
Unit |
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Thermal Resistance, Junction to Case |
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RθJC |
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2.5 |
°C/W |
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ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted.) |
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Characteristic |
Symbol |
Min |
Typ |
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Max |
Unit |
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OFF CHARACTERISTICS |
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Collector±Emitter Breakdown Voltage (IC = 50 mAdc, IB = 0) |
V(BR)CEO |
35 |
Ð |
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Ð |
Vdc |
Collector±Base Breakdown Voltage (IC = 50 mAdc, IE = 0) |
V(BR)CBO |
65 |
Ð |
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Ð |
Vdc |
Emitter±Base Breakdown Voltage (IE = 10 mAdc, IC = 0) |
V(BR)EBO |
4.0 |
Ð |
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Ð |
Vdc |
Collector Cutoff Current (VCE = 28 Vdc, VBE = 0) |
ICES |
Ð |
Ð |
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10 |
mAdc |
NOTE: |
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(continued) |
1.This device is designed for RF operation. The total device dissipation rating applies only when the device is operated as an RF amplifier.
Motorola, Inc. 1994
ELECTRICAL CHARACTERISTICS Ð continued (TC = 25°C unless otherwise noted.)
Characteristic |
Symbol |
Min |
Typ |
Max |
Unit |
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ON CHARACTERISTICS
DC Current Gain |
hFE |
10 |
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35 |
Ð |
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Ð |
(IC = 1.0 Adc, VCE = 5.0 Vdc) |
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DYNAMIC CHARACTERISTICS |
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Output Capacitance |
Cob |
Ð |
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60 |
80 |
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pF |
(VCB = 30 Vdc, IE = 0, f = 1.0 MHz) |
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FUNCTIONAL TESTS (SSB) |
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Common±Emitter Amplifier Gain |
GPE |
22 |
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25 |
Ð |
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dB |
(VCC = 28 Vdc, Pout = 25 W (PEP), f1 = 30 MHz, |
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f2 = 30.001 MHz, ICQ = 25 mA) |
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Collector Efficiency |
h |
35 |
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Ð |
Ð |
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% |
(VCC = 28 Vdc, Pout = 25 W (PEP), f1 = 30 MHz, |
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f2 = 30.001 MHz, ICQ = 25 mA) |
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Intermodulation Distortion (2) |
IMD(d3) |
Ð |
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± 35 |
± 30 |
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dB |
(VCC = 28 Vdc, Pout = 25 W (PEP), f1 = 30 MHz, |
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f2 = 30.001 MHz, ICQ = 25 mA) |
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Load Mismatch |
y |
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(VCC = 28 Vdc, Pout = 25 W (PEP), f1 = 30 MHz, |
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No Degradation in Output Power |
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f2 = 30.001 MHz, ICQ = 25 mA, VSWR 30:1 at All Phase Angles) |
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CLASS A PERFORMANCE |
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Intermodulation Distortion (2) and Power Gain |
GPE |
Ð |
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23.5 |
Ð |
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dB |
(VCC = 28 Vdc, Pout = 8.0 W (PEP), f1 = 30 MHz, |
IMD(d3) |
Ð |
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± 40 |
Ð |
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f2 = 30.001 MHz, ICQ = 1.2 Adc) |
IMD(d5) |
Ð |
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± 55 |
Ð |
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NOTE:
2. To Mil±Std±1311 Version A, Test Method 2204B, Two Tone, Reference each Tone.
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C8 |
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RFC2 |
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+ |
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RFC1 |
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28 Vdc |
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BIAS |
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C9 |
± |
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INPUT |
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L3 |
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C6 |
C7 |
CR1 |
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L4 |
L2 |
C3 |
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RF OUTPUT |
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RF |
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L1 |
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C5 |
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DUT |
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INPUT |
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C4 |
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C1 |
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C2 |
R1 |
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C1, C2 Ð ARCO 469, 190± 780 pF |
L1 Ð 3 Turns #16 0.25 ″ |
ID |
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C3, C4 Ð ARCO 464, 25± 280 pF |
L2 Ð 6 Turns #16 0.5 ″ ID |
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C5 Ð 120 pF Dipped Mica |
L3 Ð 7 Turns #20 0.38 ″ |
ID |
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C6, C7 Ð 100 |
mF, 15 Vdc |
L4 Ð 10 mH Molded Choke Delevan |
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C8 Ð 680 pF F.T. Allen Bradley |
RFC1 Ð Ferroxcube VK200/20±4B |
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C9 Ð 1.0 mF 35 V Tantalum |
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RFC2 Ð 3±Ferroxcube 5653065±3B |
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CR1 Ð 1N4997 |
RF Ð Input/Output Connectors UG53 A/ m |
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R1 Ð 10 W 1/2 Watt 10% |
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Adjust Bias (Base) for ICQ = 20 mA with No RF Applied
Figure 1. 30 MHz Linear Test Circuit
MRF426 |
MOTOROLA RF DEVICE DATA |
2 |
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50 |
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40 |
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f = 30 MHz |
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(WATTSPOWERPEP) |
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f = 30, 30.001 MHz |
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(WATTS)POWEROUTPUT |
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ICQ = 25 mA |
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40 |
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ICQ = 25 mA |
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V |
= 28 Vdc |
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30 |
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CC |
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IMD(d3) |
= ± 35 dB |
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30 |
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out |
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OUTPUT, |
20 |
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20 |
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, |
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10 |
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P |
10 |
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out |
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P |
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0 |
0 |
20 |
40 |
60 |
80 |
100 |
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016 |
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20 |
24 |
28 |
32 |
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Pin, INPUT POWER (mW) |
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VCC, SUPPLY VOLTAGE (VOLTS) |
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Figure 2. Output Power versus Input Power |
Figure 3. Output Power versus Supply Voltage |
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40 |
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(dB) |
35 |
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POWER GAIN |
30 |
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25 |
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, |
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PE |
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VCC = 28 V |
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G |
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ICQ = 25 mA |
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20 |
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Pout = 25 W PEP |
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15 |
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1.5 |
2 |
3 |
5 |
7 |
10 |
15 |
20 |
30 |
(dB) |
± 25 |
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DISTORTION |
± 30 |
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± 35 |
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d3 |
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INTERMODULATION |
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± 40 |
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d5 |
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± 45 |
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f = 30, 30.001 MHz |
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ICQ = 25 mA |
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IMD, |
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VCC = 28 V |
± 50 |
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10 |
20 |
30 |
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0 |
f, FREQUENCY (MHz) |
Pout, OUTPUT POWER (WATTS PEP) |
Figure 4. Power Gain versus Frequency |
Figure 5. Intermodulation Distortion |
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versus Output Power |
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5 |
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(AMP) |
2.5 |
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CURRENT |
1 |
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TC = 25°C |
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0.5 |
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, COLLECTOR |
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0.25 |
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0.1 |
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C |
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I |
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0.05 |
2 |
5 |
10 |
20 |
50 |
100 |
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1 |
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VCE, COLLECTOR±EMITTER VOLTAGE (VOLTS) |
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Figure 6. DC Safe Operating Area
MOTOROLA RF DEVICE DATA |
MRF426 |
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3 |
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2500 |
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OUTPUT |
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VCC = 28 V |
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2000 |
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ICQ = 25 mA |
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Pout = 25 W PEP |
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PARALLELEQUIVALENT |
1500 |
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1000 |
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CAPACITANCE(pF) |
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, |
500 |
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out |
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C |
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0 |
2 |
3 |
5 |
7 |
10 |
15 |
20 |
30 |
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1.5 |
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25 |
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PARALLELEQUIVALENT OUTPUT |
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VCC = 28 V |
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ICQ = 25 mA |
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Pout = 25 W PEP |
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15 |
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RESISTANCE(OHMS) |
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, |
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out |
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R |
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5 |
2 |
3 |
5 |
7 |
10 |
15 |
20 |
30 |
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1.5 |
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f, FREQUENCY (MHz) |
f, FREQUENCY (MHz) |
Figure 7. Output Capacitance versus Frequency |
Figure 8. Output Resistance versus Frequency |
1.0 |
0 |
1.0 |
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2.0 |
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2.0 |
3.0 |
1.0 |
3.0 |
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4.0 |
30 |
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4.0 |
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2.0 |
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5.0 |
3.0 |
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5.0 |
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15 |
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6.0 |
4.0 |
VCC = 28 V |
6.0 |
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7.0 |
7.5 |
5.0 |
ICQ = 25 mA |
7.0 |
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Pout = 25 W PEP |
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8.0 |
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6.0 |
f |
Zin |
8.0 |
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4.0 |
7.0 |
MHz |
Ohms |
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2.0 |
6.20 ± j6.65 |
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9.0 |
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8.0 |
9.0 |
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4.0 |
4.65 ± j5.50 |
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9.0 |
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f = 2.0 MHz |
7.5 |
3.25 ± j4.05 |
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10.0 |
10.0 |
10.0 |
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15 |
2.45 ± j2.90 |
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12.0 |
30 |
1.4 ± j0.77 |
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12.0 |
Zo = 10 Ω |
14.0 |
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12.0 |
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16.0 |
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14.0 |
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18.0 |
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14.0 |
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20.0 |
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Figure 9. Series Equivalent Input Impedance
MRF426 |
MOTOROLA RF DEVICE DATA |
4 |
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PACKAGE DIMENSIONS
Q |
1 |
2
S K
A |
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U |
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NOTES: |
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M |
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1. DIMENSIONING AND TOLERANCING PER ANSI |
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Y14.5M, 1982. |
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M |
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2. CONTROLLING DIMENSION: INCH. |
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INCHES |
MILLIMETERS |
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4 |
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DIM |
MIN |
MAX |
MIN |
MAX |
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A |
0.960 |
0.990 |
24.39 |
25.14 |
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B |
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R |
B |
0.370 |
0.390 |
9.40 |
9.90 |
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C |
0.229 |
0.281 |
5.82 |
7.13 |
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D |
0.215 |
0.235 |
5.47 |
5.96 |
3 |
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E |
0.085 |
0.105 |
2.16 |
2.66 |
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H |
0.150 |
0.108 |
3.81 |
4.57 |
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D |
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J |
0.004 |
0.006 |
0.11 |
0.15 |
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K |
0.395 |
0.405 |
10.04 |
10.28 |
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M |
40 |
50 |
40 |
50 |
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Q |
0.113 |
0.130 |
2.88 |
3.30 |
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R |
0.245 |
0.255 |
6.23 |
6.47 |
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S |
0.790 |
0.810 |
20.07 |
20.57 |
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U |
0.720 |
0.730 |
18.29 |
18.54 |
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STYLE 1: |
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J |
PIN 1. |
EMITTER |
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2. |
BASE |
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C |
3. |
EMITTER |
H |
4. |
COLLECTOR |
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E |
SEATING |
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PLANE |
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CASE 211±07
ISSUE N
MOTOROLA RF DEVICE DATA |
MRF426 |
|
5 |
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ªTypicalº parameters can and do vary in different applications. All operating parameters, including ªTypicalsº must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and 
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
Literature Distribution Centers:
USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036.
EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England. JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan.
ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong.
◊ |
MRF426/D |
|
*MRF426/D* |