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參數(shù)資料
| 型號： | MRF4427R2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 小信號晶體管 |
| 英文描述： | 2 CHANNEL, VHF BAND, Si, NPN, RF SMALL SIGNAL TRANSISTOR |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大小： | 86K |
| 代理商： | MRF4427R2 |
LIFETIME
BUY
LAST
ORDER
14/10/99
LAST
SHIP
14/04/00
MRF4427R2
2
MOTOROLA RF DEVICE DATA
ELECTRICAL CHARACTERISTICS — continued (TA = 25°C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
ON CHARACTERISTICS
DC Current Gain
(IC = 100 mAdc, VCE = 5.0 Vdc)
(IC = 360 mAdc, VCE = 5.0 Vdc)
hFE
10
5.0
50
—
200
—
Collector–Emitter Saturation Voltage
(IC = 100 mAdc, IB = 20 mAdc)
VCE(sat)
—
60
—
mVdc
DYNAMIC CHARACTERISTICS
Current–Gain — Bandwidth Product
(IC = 50 mAdc, VCE = 12 Vdc, f = 200 MHz)
fT
—
1600
—
MHz
Output Capacitance
(VCB = 12 Vdc, IE = 0, f = 1.0 MHz)
Cob
—
3.0
pF
FUNCTIONAL TESTS
Common–Emitter Amplifier Power Gain
(Pin = 15 mW, VCC = 12 Vdc, f = 175 MHz)
Gpe
—
18
—
dB
Collector Efficiency (Figure 1)
(Pout = 1.0 W, VCC = 12 Vdc, f = 175 MHz)
η
—
60
—
%
Insertion Gain
(VCE = 12 Vdc, IC = 50 mA, f = 200 MHz)
|S21|2
14
16.4
—
dB
Figure 1. 175 MHz RF Amplifier Circuit for Functional Tests
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
1/8 watt carbon
RFC1 – 4 — 10
H molded choke
D.U.T.
RFC1
C1
C10
C11
C12
C13
C14
C15
C16
C2
L1
C3
L2
C4
C5
RFC2
C6
C7
C8
C9
RFC4
RFC3
R1
R2
D1
+
VCC
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