1
MRF553MOTOROLA RF DEVICE DATA
The RF Line
Designed primarily for wideband large signal predriver stages in the VHF
frequency range.
•Specified @ 12.5 V, 175 MHz Characteristics
Output Power = 1.5 W
Minimum Gain = 11.5 dB
Efficiency 60% (Typ)
•Cost Effective PowerMacro Package
•Electroless Tin Plated Leads for Improved Solderability
•Circuit board photomaster available upon request by
contacting RF Tactical Marketing in Phoenix, AZ.
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 IC500 mAdc
Total Device Dissipation @ TC = 75°C (1, 2)
Derate above 75°CPD3.0
40 Watts
mW/°C
Storage Temperature Range Tstg –55 to +150 °C
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Thermal Resistance Junction to Case RθJC 25 °C/W
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
OFF CHARACTERISTICS
Collector–Emitter Breakdown Voltage
(IC = 10 mAdc, IB = 0) V(BR)CEO 16 — — Vdc
Collector–Emitter Breakdown Voltage
(IC = 5.0 mAdc, VBE = 0) V(BR)CES 36 — — Vdc
Collector–Base Breakdown Voltage
(IC = 5.0 mAdc, IE = 0) V(BR)CBO 36 — — Vdc
Emitter–Base Breakdown Voltage
(IE = 1.0 mAdc, IC = 0) V(BR)EBO 4.0 — — Vdc
Collector Cutoff Current
(VCE = 15 Vdc, VBE = 0, TC = 25°C) ICES — — 5.0 mAdc
ON CHARACTERISTICS
DC Current Gain
(IC = 250 mAdc, VCE = 5.0 Vdc) hFE 30 — 200 —
NOTES: (continued)
1. TC, Case temperature measured on collector lead immediately adjacent to body of package.
2. The MRF553 PowerMacro must be properly mounted for reliable operation. AN938, “Mounting Techniques in PowerMacro Transistor,”
discusses methods of mounting and heatsinking.
Order this document
by MRF553/D
SEMICONDUCTOR TECHNICAL DATA
1.5 W, 175 MHz
RF LOW POWER
TRANSISTOR
NPN SILICON
CASE 317D–02, STYLE 2
Motorola, Inc. 1995
REV 7
MRF553
2MOTOROLA RF DEVICE DATA
ELECTRICAL CHARACTERISTICS — continued (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 10 Vdc, IE = 0, f = 1.0 MHz) Cob — 12 20 pF
FUNCTIONAL TESTS
Common–Emitter Amplifier Power Gain Figures 1, 2
(VCC = 12.5 Vdc, Pout = 1.5 W, f = 175 MHz) Gpe 11.5 13 — dB
Collector Efficiency Figures 1, 2
(VCC = 12.5 Vdc, Pout = 1.5 W, f = 175 MHz) η50 60 — %
Load Mismatch Stress
(VCC = 12.5 Vdc, Pout = 1.5 W, f = 175 MHz,
VSWR ≥ 10:1 All Phase Angles)
ψNo Degradation in Output Power —
Figure 1. 140–175 MHz Broadband Circuit Schematic
C1 — 36 pF Mini Underwood
C2 — 47 pF Mini Underwood
C3 — 91 pF Mini Underwood
C4 — 68 pF Mini Underwood
C5, C9 — 1.0 µF Erie Red Cap Capacitor
C6, C10 — 0.1 µF, 35 V Tantulum
C7 — 470 pF Chip Capacitor
C8 — 2200 pF Chip Capacitor
R1 — 4.7 kΩ, 1/4 W
R2 — 100 Ω, 1/4 W
D1 — 1N4148 Diode
L1 — 3 Turns, #18 AWG, 0.210″ ID, 3/16″ Length
L2, L4, L7 — 0.62″, #18 AWG Wire Bent into “V”
L3, L6 — 60 x 125 x 250 Mils Copper Pad on 27 Mils Thick Alumina Substrate
L5 — 12 µH Molded Choke
L8 — 7 Turns, #18 AWG, 0.170″ ID, 7/16″ Length
L9 — 1.0″, #18 AWG Wire with 5 Ferrite Beads
B — Ferrite Bead
Board Material — Glass Teflon, εr = 2.56, t = 0.0625″
VBB =
12.5 V
RF
INPUT
RF
OUTPUT
R1
C5 C6 +R2 D1 B
L5
L4
C4
L3
D.U.T. L6
L2
C2
L1
C1 C3
L7 C7
C10C9
5 x B
L9
B
C8
L8
VCC =
12.5 V
+
3
MRF553MOTOROLA RF DEVICE DATA
Figure 2. Typical Performance in
Broadband Circuit
Gpe, POWER GAIN (dB)
c
η
, COLLECTOR EFFICIENCY (%)
20
18
16
14
12
10
8
6
4
2
180140 150 160 170
100
90
80
70
60
50
40
30
20
10
0
f, FREQUENCY (MHz)
10
15
20
Gpe
η
c
IRL
Pout = 1.5 W, VCC = 12.5 Vdc 5
IRL, INPUT RETURN LOSS (dB)
f
Frequency
MHz
Zin
Ohms ZOL*
Ohms
f
Frequency
MHz
VCC = 7.5 V; Pin VCC = 12.5 V; Pin VCC = 7.5 V; Pout VCC = 12.5 V; Pout
Frequency
MHz
100 mW 200 mW 300 mW 50 mW 100 mW 150 mW 1.0 W 1.6 W 2.2 W 1.1 W 2.0 W 2.6 W
140 1.65–j3.6 2.0–j2.6 2.3–j1.2 1.7–j4.1 1.8–j3.1 1.9–j2.7 9.9–j11.1 10.6–j5.1 10–j4.9 28.3–j21.5 16–j20.5 16.3–j16.5
175 2.5–j5.6 2.3–j5.9 2.8–j4.0 2.3–j4.6 2.4–j1.2 2.4–j5.7 12.1–j14.9 7.2–j9.8 8.1–j5.4 30.8–j23.3 11.4–j20.9 11.1–j14.3
f
Frequency
MHz
Zin
Ohms ZOL*
Ohms
f
Frequency
MHz
VCC = 7.5 V; Pin VCC = 12.5 V; Pin VCC = 7.5 V; Pout VCC = 12.5 V; Pout
Frequency
MHz
50 mW 100 mW 200 mW 25 mW 50 mW 100 mW 1.25 W 1.5 W 2.0 W 1.5 W 2.25 W 3.0 W
90 2.5–j9.3 2.5–j6.4 2.5–j4.4 1.6–j10.7 2.5–j7.1 2.2–j1.3 31.8–j9.2 32–j8.9 30.2–j10.7 45.8–j7.2 45.2–j3.9 40–j4.5
ZOL* = Conjugate of the optimum load impedance into which the device output operates at a given output power, voltage and frequency.
Table 1. Zin and ZOL versus Collector Voltage, Input Power, and Output Power
MRF553
4MOTOROLA RF DEVICE DATA
Figure 3. Power Output versus Power Input Figure 4. Power Output versus Power Input
Figure 5. Power Output versus Frequency Figure 6. Power Output versus Frequency
Figure 7. Power Output versus
Collector Voltage Figure 8. Power Output versus
Collector Voltage
P , POWER OUTPUT (WATTS)
out
P , POWER OUTPUT (WATTS)
out
P , POWER OUTPUT (WATTS)
out
P , OUTPUT POWER (WATTS)
out
P , POWER OUTPUT (WATTS)
out
P , POWER OUTPUT (WATTS)
out
2.5
2
1.5
1
0.5
4003002001000 Pin, POWER INPUT (mW)
f = 175 MHz
VCC = 7.5 Vdc
4
1501000 Pin, POWER INPUT (mW)
3
2
1
50 200
f = 175 MHz
VCC = 12.5 Vdc
4
150140 f, FREQUENCY (MHz)
3
2
1
160 170 180
VCC = 7.5 Vdc
Pin = 300 mW
200 mW
100 mW
4
150140 f, FREQUENCY (MHz)
3
2
1
160 170 180
VCC = 12.5 Vdc
Pin = 150 mW
100 mW
50 mW
4
86 VCC, COLLECTOR VOLTAGE (Vdc)
3
2
1
10 12 14 16
f = 140 MHz
Pin = 150 mW
100 mW
50 mW
4
86 VCC, COLLECTOR VOLTAGE (Vdc)
3
2
1
10 12 14 16
f = 175 MHz Pin = 150 mW
100 mW
50 mW
5
MRF553MOTOROLA RF DEVICE DATA
PACKAGE DIMENSIONS
CASE 317D–02
ISSUE C
STYLE 2:
PIN 1. COLLECTOR
2. EMITTER
3. BASE
4. EMITTER
N
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. LEAD DIMENSIONS UNCONTROLLED WITHIN
DIMENSION N AND R.
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.175 0.205 4.45 5.20
C0.075 0.100 1.91 2.54
D0.033 0.039 0.84 0.99
F0.097 0.104 2.46 2.64
H0.348 0.383 8.84 9.72
J0.008 0.012 0.24 0.30
K0.285 0.320 7.24 8.12
N––– 0.065 ––– 1.65
R––– 0.128 ––– 3.25
T0.025 0.040 0.64 1.01
F
DK
H
R
A
124 3
T
SEATING
PLANE
J
C
MRF553
6MOTOROLA RF DEVICE DATA
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MRF553/D
*MRF553/D*
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