ELECTRICAL CHARACTERISTICS — continued
(TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
ON CHARACTERISTICS
DC Current Gain
(IC = 500 mAdc, VCE = 5.0 Vdc)
hFE
10
70
150
—
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 15 Vdc, IE = 0, f = 1.0 MHz)
Cob
—
33
60
pF
FUNCTIONAL TESTS (Figure 1)
Common–Emitter Amplifier Power Gain
(VCC = 12.5 Vdc, Pout = 15 W, f = 175 MHz)
Collector Efficiency
(VCC = 12.5 Vdc, Pout = 15 W, f = 175 MHz)
Load Mismatch
(VCC = 15.5 Vdc, Pin = 2.0 dB Overdrive,
Load VSWR = 30:1)
Gpe
η
ψ
No Degradation in Output Power
12
60
13
68
—
—
dB
%
RFC2
+12.5 V
+
C11
L7
R2
L4
RFC1
L1
C1
C2
C3
C4
C5
C6
C7
C8
C9
L2
R1
L3
D.U.T.
C10
L5
L6
R3
C12
C13
C1, C10, C11 — 1000 pF Ceramic Chip Capacitor
C2 — 27 pF Mini Unelco Capacitor
C3 — 33 pF Mini Unelco Capacitor
C4, C5 — 270 pF Unelco J101 Capacitor
C6, C9 — 18 pF Mini Unelco Capacitor
C7 — 91 pF Mini Unelco Capacitor
C8 — 68 pF Mini Unelco Capacitor
C12 — 0.1
µF
Monolythic Capacitor
C13 — 100
µF,
15 V Electrolytic
L1 — 3 Turns #18 AWG, 3/16″ ID
L2 — 1–1/8″ #18 AWG into 1/2″ High Loop
L3 — Copper Pad, 0.200 x 0.400 x 0.060
L4 — 1/4″ #18 AWG into 1/8″ High Loop
L5 — 3 Turns #24 AWG Enameled, 3/32″ ID
L6 — 6 Turns #24 AWG Enameled, 3/32″ ID
L7 — 1–3/4″ #16 AWG into 3/4″ High Loop
R1 — 12
Ω,
1/2 W Carbon
R2 — 100
Ω,
1.0 W Carbon
R3 — 10
Ω,
1.0 W Carbon
RFC1 — 0.15
µH
Molded Choke
RFC2 — Ferroxcube Choke, VK200–4B
Figure 1. Broadband Circuit
MRF2628
2
MOTOROLA RF DEVICE DATA
MOTOROLA [ MOTOROLA, INC ]
