MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document by MRF2628/D
The RF Line
NPN Silicon
RF Power Transistor
. . . designed for 12.5 volt VHF large±signal power amplifiers in commercial and industrial FM equipment.
•Compact .280 Stud Package
•Specified 12.5 V, 175 MHz Performance Output Power = 15 Watts
Power Gain = 12 dB Min Efficiency = 60% Min
•Characterized to 220 MHz
•Load Mismatch Capability at High Line and Overdrive
MAXIMUM RATINGS
MRF2628
15 W 136 ± 220 MHz
RF POWER
TRANSISTOR
NPN SILICON
CASE 244±04, 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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18 |
Vdc |
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Collector±Base Voltage |
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VCBO |
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36 |
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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2.5 |
Adc |
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Total Device Dissipation @ TA = 25°C |
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PD |
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40 |
Watts |
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Derate above 25°C |
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0.23 |
W/°C |
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Storage Temperature Range |
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Tstg |
± 65 to +150 |
°C |
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Junction Temperature |
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TJ |
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200 |
°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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4.0 |
°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 |
V(BR)CEO |
18 |
Ð |
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Ð |
Vdc |
(IC = 25 mAdc, IB = 0) |
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Collector±Emitter Breakdown Voltage |
V(BR)CES |
36 |
Ð |
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Ð |
Vdc |
(IC = 25 mAdc, VBE = 0) |
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Emitter±Base Breakdown Voltage |
V(BR)EBO |
4.0 |
Ð |
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Ð |
Vdc |
(IE = 5.0 mAdc, IC = 0) |
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Collector Cutoff Current |
ICBO |
Ð |
Ð |
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1.0 |
mAdc |
(VCB = 15 Vdc, IE = 0) |
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(continued) |
REV 6 |
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Motorola, Inc. 1994 |
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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 |
70 |
150 |
Ð |
(IC = 500 mAdc, VCE = 5.0 Vdc) |
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DYNAMIC CHARACTERISTICS
Output Capacitance |
Cob |
Ð |
33 |
60 |
pF |
(VCB = 15 Vdc, IE = 0, f = 1.0 MHz) |
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FUNCTIONAL TESTS (Figure 1)
Common±Emitter Amplifier Power Gain |
Gpe |
12 |
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13 |
Ð |
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dB |
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(VCC = 12.5 |
Vdc, Pout = 15 W, f = 175 MHz) |
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Collector Efficiency |
h |
60 |
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68 |
Ð |
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% |
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(VCC = 12.5 |
Vdc, Pout = 15 W, f = 175 MHz) |
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Load Mismatch |
y |
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(VCC = 15.5 |
Vdc, Pin = 2.0 dB Overdrive, |
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No Degradation in Output Power |
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Load VSWR = 30:1) |
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RFC2 |
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+12.5 V |
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+ |
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C11 |
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R3 |
C12 |
C13 |
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L7 |
R2 |
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RFC1 |
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L4 |
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L5 |
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L6 |
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R1 |
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L1 |
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L2 |
L3 |
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C10 |
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D.U.T. |
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C1 |
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C6 |
C7 |
C8 |
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C9 |
C2 |
C3 |
C4 |
C5 |
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C1, C10, C11 Ð 1000 pF Ceramic Chip Capacitor |
L3 Ð Copper Pad, 0.200 x 0.400 x 0.060 |
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C2 Ð 27 pF Mini Unelco Capacitor |
L4 |
Ð 1/4 ″ #18 AWG into 1/8″ High Loop |
C3 Ð 33 pF Mini Unelco Capacitor |
L5 |
Ð 3 Turns #24 AWG Enameled, 3/32 ″ ID |
C4, C5 Ð 270 pF Unelco J101 Capacitor |
L6 |
Ð 6 Turns #24 AWG Enameled, 3/32 ″ ID |
C6, C9 Ð 18 pF Mini Unelco Capacitor |
L7 |
Ð 1±3/4 ″ #16 AWG into 3/4″ High Loop |
C7 Ð 91 pF Mini Unelco Capacitor |
R1 Ð 12 W, 1/2 W Carbon |
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C8 Ð 68 pF Mini Unelco Capacitor |
R2 Ð 100 W, 1.0 W Carbon |
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C12 Ð 0.1 mF Monolythic Capacitor |
R3 Ð 10 W, 1.0 W Carbon |
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C13 Ð 100 mF, 15 V Electrolytic |
RFC1 Ð 0.15 mH Molded Choke |
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L1 Ð 3 Turns #18 AWG, 3/16 ″ ID |
RFC2 Ð Ferroxcube Choke, VK200±4B |
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L2 Ð 1±1/8 ″ #18 AWG into 1/2″ High Loop |
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Figure 1. Broadband Circuit
MRF2628 |
MOTOROLA RF DEVICE DATA |
2 |
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24 |
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24 |
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f = 136 MHz |
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(WATTS) |
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(WATTS) |
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150 MHz |
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18 |
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18 |
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175 MHz |
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Pin = 1 W |
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POWER |
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POWER |
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220 MHz |
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0.8 W |
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12 |
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0.6 W |
12 |
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, OUTPUT |
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, OUTPUT |
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0.4 W |
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out |
6 |
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out |
6 |
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P |
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VCC |
= 12.5 V |
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P |
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VCC = 12.5 V |
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0 |
150 |
170 |
190 |
210 |
230 |
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0 |
0.2 |
0.4 |
0.6 |
0.8 |
1 |
1.2 |
1.4 |
1.6 |
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130 |
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0 |
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f, FREQUENCY (MHz) |
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Pin, INPUT POWER (WATTS) |
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Figure 2. Output Power versus Frequency |
Figure 3. Output Power versus Input Power |
(WATTS) |
30 |
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(WATTS) |
30 |
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24 |
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24 |
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POWER |
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POWER |
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18 |
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0.75 |
W |
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Pin = 1 W |
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18 |
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OUTPUT, |
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OUTPUT, |
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0.25 W |
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out |
12 |
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0.5 W |
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out |
12 |
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6 |
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6 |
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P |
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P |
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0 |
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f |
= 220 MHz |
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5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
5 |
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VCC, SUPPLY VOLTAGE (VOLTS) |
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Figure 4. Output Power versus Supply Voltage |
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30 |
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30 |
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(WATTS) |
24 |
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Pin = 1 |
W |
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(WATTS) |
24 |
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0.75 W |
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POWER |
18 |
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POWER |
18 |
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OUTPUT, |
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0.25 W |
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OUTPUT, |
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12 |
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12 |
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0.5 W |
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out |
6 |
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out |
6 |
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P |
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f = 150 MHz |
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0 |
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0 |
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5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
5 |
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VCC, SUPPLY VOLTAGE (VOLTS)
Figure 6. Output Power versus Supply Voltage
Pin = 1 W
0.75 W
0.5 W
0.25 W
f = 175 MHz
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
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VCC, SUPPLY VOLTAGE (VOLTS) |
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Figure 5. Output Power versus Supply Voltage
Pin = 1 W
0.75 W
0.5 W
0.25 W
f = 136 MHz
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
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VCC, SUPPLY VOLTAGE (VOLTS) |
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Figure 7. Output Power versus Supply Voltage
MOTOROLA RF DEVICE DATA |
MRF2628 |
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3 |
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16 |
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80 |
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14 |
GPE |
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GAIN (dB) |
12 |
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70 |
EFFICIENCY |
10 |
ηc |
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8 |
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Pin = 0.75 W |
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60 |
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, POWER |
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VCC = 12.5 V |
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, COLLECTOR |
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6 |
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4 |
INPUT VSWR |
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1.5:1 |
50 |
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PE |
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G |
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1.25:1 |
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c |
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2 |
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η |
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0 |
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1:1 |
40 |
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155 |
160 |
165 |
170 |
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150 |
175 |
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f, FREQUENCY (MHz)
Figure 8. Typical Performance in a Broadband Circuit
Zin
f = 136 MHz 
220
150 175
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Zo = 10 Ω |
ZOL* |
220 |
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f = 136 MHz 150 |
175 |
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VCC = 12.5 V, Pout = 15 W |
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f |
Zin |
ZOL* |
MHz |
Ohms |
Ohms |
136 |
0.59 ± j0.80 |
5.07 ± j4.76 |
150 |
0.68 ± j0.61 |
5.23 ± j4.14 |
175 |
0.69 ± j0.17 |
5.26 ± j3.46 |
220 |
0.62 + j0.39 |
5.25 ± j2.46 |
ZOL* = Conjugate of the optimum load impedance
ZOL* = into which the device output operates at a
ZOL* = given output power, voltage and frequency.
Figure 9. Series Equivalent Impedance
MRF2628 |
MOTOROLA RF DEVICE DATA |
4 |
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PACKAGE DIMENSIONS
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2 |
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3 |
1 |
D |
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4 |
K |
M
T |
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A |
J |
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F |
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SEATING PLANE |
C |
P |
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U |
S |
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8±32 NC 2A |
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WRENCH FLAT 
E
B
CASE 244±04
ISSUE J
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MILLIMETERS |
INCHES |
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DIM |
MIN |
MAX |
MIN |
MAX |
A |
7.06 |
7.26 |
0.278 |
0.286 |
B |
6.20 |
6.50 |
0.244 |
0.256 |
C |
14.99 |
16.51 |
0.590 |
0.650 |
D |
5.46 |
5.96 |
0.215 |
0.235 |
E |
1.40 |
1.65 |
0.055 |
0.065 |
G |
1.52 |
±±± |
0.060 |
±±± |
J |
0.08 |
0.17 |
0.003 |
0.007 |
K |
11.05 |
±±± |
0.435 |
±±± |
M |
45 |
NOM |
45 |
NOM |
P |
±±± |
1.27 |
±±± |
0.050 |
S |
3.00 |
3.25 |
0.118 |
0.128 |
T |
1.40 |
1.77 |
0.055 |
0.070 |
U |
2.92 |
3.68 |
0.115 |
0.145 |
STYLE 1:
PIN 1. EMITTER
2.BASE
3.EMITTER
4.COLLECTOR
MOTOROLA RF DEVICE DATA |
MRF2628 |
|
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.
◊ |
MRF2628/D |
|
*MRF2628/D* |