參數(shù)資料
型號(hào): MRF1946A
廠商: MOTOROLA INC
元件分類: 功率晶體管
英文描述: RF POWER TRANSISTORS NPN SILICON
中文描述: VHF BAND, Si, NPN, RF POWER TRANSISTOR
封裝: CASE 145A-09, 4 PIN
文件頁(yè)數(shù): 2/6頁(yè)
文件大?。?/td> 141K
代理商: MRF1946A
MRF1946 MRF1946A
2
MOTOROLA RF DEVICE DATA
ELECTRICAL CHARACTERISTICS — continued
(TC = 25
°
C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
DYNAMIC CHARACTERISTICS
Output Capacitance
(VCB = 15 Vdc, IE = 0, f = 1.0 MHz)
Cob
75
100
pF
FUNCTIONAL TESTS
Common–Emitter Amplifier Power Gain
(VCC = 12.5 Vdc, Pout = 30 W, f = 175 MHz)
Gpe
10
11
dB
Collector Efficiency
(VCC = 12.5 Vdc, Pout = 30 W, f = 175 MHz)
η
60
70
%
Load Mismatch
(VCC = 15.5 Vdc, Pin = 2.0 dB Overdrive,
Load VSWR = 30:1)
ψ
No Degradation in Power Output
Figure 1. Broadband Test Circuit Schematic
C1 — 56 pF Mini–Unelco, 3HS0006–56
C2 — 47 pF Mini–Unelco, 3HS0006–47
C3, C4 — 180 pF Chip Cap, ATC 100B181JC500
C5 — 150 pF Unelco, J101–150
C6 — 39 pF Mini–Unelco, 3HS0006–39
C7, C8 — 1000 pF Chip Cap, ATC 100B102JC50
C9 — 0.1
μ
F Ceramic Capacitor
C10 — 10
μ
F, 25 V Electrolytic Capacitor
C11 — 56 pF Mini–Unelco, 3HS0006–56
L1 — 2 Turns #18 AWG, 0.125
ID
L2, L3 — Circuit Board and Mounting Pad Inductance
L4 — 3 Turns #18 AWG, 0.125
ID
L5 — 6 Turns #16 Enameled, 0.250
ID
RFC1 — 0.15
μ
H Molded Choke w/Ferrite Bead
RFC2 — Ferrite Choke, Fair Rite VK200–4B
Board Material — 1/32
,
Glass Teflon, 1 oz. Cu Plating
Bead — Ferroxcube
RFC1
DUT
+12.5
Vdc
C1
C10
B
L1
L2
C2
C3
C4
RFC2
L5
L3
L4
C6
C7
C5
C11
C8
C9
+
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