MRF4427R2 Motorola, MRF4427R2 Datasheet - Page 2

• Manufacturer Part Number: MRF4427R2
• Description: HIGH-FREQUENCY TRANSISTOR NPN SILICON
• Manufacturer: Motorola

ELECTRICAL CHARACTERISTICS — continued
ON CHARACTERISTICS
DYNAMIC CHARACTERISTICS
FUNCTIONAL TESTS
MRF4427R2
2
DC Current Gain
Collector–Emitter Saturation Voltage
Current–Gain — Bandwidth Product
Output Capacitance
Common–Emitter Amplifier Power Gain
Collector Efficiency (Figure 1)
Insertion Gain
(I C = 100 mAdc, V CE = 5.0 Vdc)
(I C = 360 mAdc, V CE = 5.0 Vdc)
(I C = 100 mAdc, I B = 20 mAdc)
(I C = 50 mAdc, V CE = 12 Vdc, f = 200 MHz)
(V CB = 12 Vdc, I E = 0, f = 1.0 MHz)
(P in = 15 mW, V CC = 12 Vdc, f = 175 MHz)
(P out = 1.0 W, V CC = 12 Vdc, f = 175 MHz)
(V CE = 12 Vdc, I C = 50 mA, f = 200 MHz)
C1
C2
C16
Characteristic
+
L1
D1
Figure 1. 175 MHz RF Amplifier Circuit for Functional Tests
RFC1
C10
C6
D.U.T.
C12
RFC3
C13
R2
C11
C7
R1
C14
C8
(T A = 25 C unless otherwise noted)
V CC
RFC2
RFC4
C15
C3
C9
C4
V CE(sat)
Symbol
|S 21 | 2
h FE
C ob
G pe
L2
f T
C1, C2 — 5.5 – 18 pF Erie ceramic trimmer
C3 — 1000 pF ATC 100 mil chip cap.
C4 — 9.0 – 35 pF Erie ceramic trimmer
C5 — Arco 405 mica trimmer
C6, C8, C10, C14 — 0.1 F Erie blue cap.
C7, C9 — 470 pF ATC 100 mil chip cap.
C11, C13, C15 — 1.0 F Erie blue cap, non–polar
C12 — 1000 pF feedthru
C16 — 10 F, 25 V tantalum
D1 — 1N4148 or 1N914
L1 — 6T #20 AWG on #2 drill bit
L2 — 4T #20 AWG on #4 drill bit
R1 — 4.7 k 1/8 watt carbon
R2 — 100
RFC1 – 4 — 10 H molded choke
C5
Min
1/8 watt carbon
5.0
10
14
—
—
—
—
—
MOTOROLA RF DEVICE DATA
1600
16.4
Typ
50
—
60
—
18
60
Max
200
3.0
—
—
—
—
—
—
mVdc
MHz
Unit
pF
dB
dB
—
%