MOTOROLA MRF641

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by MRF641/D
SEMICONDUCTOR TECHNICAL DATA
The RF Line
. . . designed for 12.5 Volt UHF large–signal amplifier applications in industrial
and commercial FM equipment operating to 512 MHz.
• Specified 12.5 Volt, 470 MHz Characteristics —
Output Power = 15 Watts
Minimum Gain = 7.8 dB
Efficiency = 55%
15 W, 470 MHz
CONTROLLED Q
RF POWER
TRANSISTOR
NPN SILICON
• Characterized with Series Equivalent Large–Signal Impedance Parameters
• Built–In Matching Network for Broadband Operation
• Tested for Load Mismatch Stress at all Phase Angles with 20:1 VSWR @
16–Volt High Line and Overdrive
• Circuit board photomaster available upon request by contacting RF Tactical
Marketing in Phoenix, AZ.
CASE 316–01, STYLE 1
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Collector–Emitter Voltage
VCEO
16
Vdc
Collector–Base Voltage
VCBO
36
Vdc
Emitter–Base Voltage
VEBO
4.0
Vdc
Collector Current — Continuous
IC
3.0
Adc
Total Device Dissipation @ TC = 25°C
Derate above 25°C
PD
43.7
0.25
Watts
W/°C
Storage Temperature Range
Tstg
– 65 to +150
°C
Symbol
Max
Unit
RθJC
4.0
°C/W
THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance, Junction to Case
ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted.)
Symbol
Min
Typ
Max
Unit
Collector–Emitter Breakdown Voltage
(IC = 20 mAdc, IB = 0)
V(BR)CEO
16
—
—
Vdc
Collector–Emitter Breakdown Voltage
(IC = 20 mAdc, VBE = 0)
V(BR)CES
36
—
—
Vdc
Emitter–Base Breakdown Voltage
(IE = 5.0 mAdc, IC = 0)
V(BR)EBO
4.0
—
—
Vdc
ICES
—
—
5.0
mAdc
Characteristic
OFF CHARACTERISTICS
Collector Cutoff Current
(VCE = 15 Vdc, VBE = 0, TC = 25°C)
(continued)
REV 6
RF DEVICE DATA
MOTOROLA
Motorola, Inc. 1994
MRF641
1
ELECTRICAL CHARACTERISTICS — continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
hFE
30
70
150
—
Cob
—
40
60
pF
Common–Emitter Amplifier Power Gain
(VCC = 12.5 Vdc, Pout = 15 W, f = 470 MHz)
Gpe
7.8
8.5
—
dB
Collector Efficiency
(VCC = 12.5 Vdc, Pout = 15 W, f = 470 MHz)
η
55
60
—
%
Output Mismatch Stress
(VCC = 16 Vdc, Pin = 3.0 W, f = 470 MHz,
VSWR = 20:1, All Phase Angles)
ψ
ON CHARACTERISTICS
DC Current Gain
(IC = 1.0 Adc, VCE = 5.0 Vdc)
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 12.5 Vdc, IE = 0, f = 1.0 MHz)
FUNCTIONAL TESTS
No Degradation in Output Power
RFC1
C9
+
BEAD
–
C13
L1
VCC 12.5 V
C10
+
C7
C8
–
C11
L2
RF OUTPUT
C12
Z4
RF INPUT
Z1
Z2
Z5
Z6
Z7
Z3
}
C3
}
C4
*
*
C5
C6
C2
C1
PARTS
Z1 — 1.225″ x 0.187″ Microstrip
Z2 — 0.884″ x 0.187″ Microstrip
Z3 — Capacitor Block (Base)
Z4 — Collector Block
Z5 — 1.1″ x 0.187″ Microstrip
Z6 — 0.433″ x 0.187″ Microstrip
Z7 — 0.4″ x 0.187″ Microstrip
Dotted Area — Capacitor Assembly
NOTES
C1, C2 — 0.8 – 10 pF Johanson
C3, C4 — 24 pF Chip Caps 100 mils ATC
C5, C6 — 22 pF Chip Caps 100 mils ATC
C12 — 220 pF Chip Cap 100 mils ATC
C7, C11 — 1.0 µF Tantalum 35 Vdc
C9, C10 — 680 pF Feedthrough Allen–Bradley
C13 — 200 pF UNELCO
C8 — 0.1 µF, 50 V Erie Red Cap
RFC1 — VK 200 — 104B Ferrite Choke
L1 — 4 Turns 0.2″ Dia. #16 AWG
L2 — 9 Turns 0.15″ Dia. #16 AWG
*C5, C6, are mounted as close to the capacitor
*assembly as possible.
‡‡ C3, C4 are mounted in the capacitor assembly.
Board — 62.5 mil Glass Teflon, εr = 2.55.
Bead — Ferroxcube 56–590–65–35EB
Figure 1. Test Circuit Schematic
MRF641
2
MOTOROLA RF DEVICE DATA
25
27
f = 470 MHz
VCC = 12.5 Vdc
24
Pout , POWER OUTPUT (WATTS)
Pout , POWER OUTPUT (WATTS)
30
21
18
15
12
9
6
VCC = 12.5 V
Pin = 3 W
20
2W
15
10
1W
5
3
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
0
380
5
400
440
460
480
500
520
f, FREQUENCY (MHz)
Figure 2. Power Output versus Power Input
Figure 3. Power Output versus Frequency
540
30
25
27
f = 470 MHz
Pin = 2 W
20
Pout , minus Pin (WATTS)
Pout , POWER OUTPUT (WATTS)
420
Pin, POWER INPUT (WATTS)
15
10
f = 470 MHz
VCC = 12.5 Vdc
24
21
18
15
12
5
9
6
3
0
8
9
10
11
12
13
14
15
0
16
0
0.5
1
1.5
2.5
3
3.5
4
VCC, SUPPLY VOLTAGE (VOLTS)
Pin, POWER INPUT (WATTS)
Figure 4. Power Output versus Supply Voltage
Figure 5. Power Saturation Profile
0
2.0
6.0
8.0
f
MHz
5
4.0
Pout = 15 W, VCC = 12.5 V
Zin
ZOL*
Ohms
Ohms
400
420
450
480
510
4.5
2.0
4.0
10.
0
2
0.6 + j4.0
0.7 + j4.2
1.0 + j5.0
1.2 + j5.2
1.7 + j6.4
1.0
6.0
420
3.5 – j1.2
3.4 – j0.8
3.0 + j0.5
2.7 + j1.2
2.6 + j1.6
450
480
2.0
510
3.0
450
420
f = 400 MHz
f = 400 MHz
ZOL*
Zin
510
480
4.0
8.0
10.
0
12.
0
ZOL* = Conjugate of the load impedance into which the device output operates at a given power, η, and frequency.
Figure 6. Series Equivalent Input–Output Impedance
MOTOROLA RF DEVICE DATA
MRF641
3
PACKAGE DIMENSIONS
F
D
4
R
NOTES:
1. FLANGE IS ISOLATED IN ALL STYLES.
K
3
DIM
A
B
C
D
E
F
H
J
K
L
N
Q
R
U
1
Q
2
L
B
C
J
E
N
INCHES
MIN
MAX
24.38
25.14
12.45
12.95
5.97
7.62
5.33
5.58
2.16
3.04
5.08
5.33
18.29
18.54
0.10
0.15
10.29
11.17
3.81
4.06
3.81
4.31
2.92
3.30
3.05
3.30
11.94
12.57
MILLIMETERS
MIN
MAX
0.960
0.990
0.490
0.510
0.235
0.300
0.210
0.220
0.085
0.120
0.200
0.210
0.720
0.730
0.004
0.006
0.405
0.440
0.150
0.160
0.150
0.170
0.115
0.130
0.120
0.130
0.470
0.495
H
U
A
STYLE 1:
PIN 1.
2.
3.
4.
EMITTER
COLLECTOR
EMITTER
BASE
CASE 316–01
ISSUE D
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. “Typical” parameters can and do vary in different
applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
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associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
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MRF641
4
◊
*MRF641/D*
MRF641/D
MOTOROLA RF DEVICE
DATA