参数资料
型号: MRF857
厂商: MOTOROLA INC
元件分类: 功率晶体管
英文描述: 64K SERIAL CONFIGURATION PROM
中文描述: UHF BAND, Si, NPN, RF POWER TRANSISTOR
文件页数: 3/6页
文件大小: 103K
代理商: MRF857
3
MRF857S
MOTOROLA RF DEVICE DATA
B1, B4
B2, B3
C1
C2, C8
C3, C9
C4, C7
C5, C6
C10, C12
C11
F1
L1, L2
Q1
Q2
Long Ferrite Bead, Fair Rite (2743021447)
Short Ferrite Bead, Fair Rite (2743019447)
250
μ
F, 50 Vdc Electrolytic Capacitor
10
μ
F, 50 Vdc Electrolytic Capacitor
0.1
μ
F, Chip Capacitor
1000 pF, Chip Capacitor
100 pF, Chip Capacitor
43 pF, 100 Mil Chip Capacitor
0.8–8 pF, Johansen Gigatrim
1 A Micro–Fuse
5 Turns, 20 AWG, 0.126
ID, 46.2 nH
MMBT2222ALT1, NPN Transistor
BD136, PNP Transistor
R1
R2
R3
R4
R5
R6
R7
R8
R9, R10
TL1–TL16
V_Supply
VCE
Board
330
, 1/4 W
500
Potentiometer, 1/4 W
4.7K
, 1/4 W
2 x 4.7K
, 1/4 W
47
, 2 W
75
, 1/4 W
4.7
, 1/4 W
10
, 3 W
4 x 39
, 1/8 W Chip Resistors in Parallel
Microstrip Transmission Line
+27 Vdc
±
0.5 V Due to Resistor Tolerance
+24 Vdc @ 0.3 A
0.030
Glass–Teflon
2 oz. Cu,
ε
r = 2.55
Figure 1. MRF857S Class A RF Test Fixture Schematic
R1
Q1
VCE
R2
R3
Q2
R4
R5
R6
C7
R9
R10
B3
B4
B1
TL6
TL5
TL4
C10
TL1
TL7
TL8
DUT
TL10
TL13
C12
TL16
R7
C8
+
C9
C4
C5
B2
R8
C1
+
V_SUPPLY
OUTPUT
INPUT
TL2
TL3
TL9
L1
C6
L2
TL11
TL12
TL14
TL15
C2
C3
+
C11
F1
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