SD2931-10 Datasheet, PDF (5/10 Pages) STMicroelectronics – RF POWER TRANSISTORS HF/VHF/UHF N-CHANNEL MOSFETs

175 MHz Test Circuit Schematic (Production Test Circuit)
SD2931-10
Note: All dimensions in inches
175 MHz Test Circuit Component Part List
T1
4:1 Transformer, 25 ohm Flexible Coax .090 OD 6” Long
T2
1:4 Transformer, 25 ohm Semi-Rigid Coax .141 OD 6” Long
FB1
Toroid X 2, 0.5” OD .312” ID 850µ 2 Turns
FB2, FB3
VK200
FB4
Shield Bead, 1” OD 0.5” ID 850µ 3 Turns
L1
1/4 Wave Choke, 50 ohm Semi-Rigid Coax .141 OD 12” Long
PCB
0.62” Woven Fiberglass, 1 oz. Copper, 2 Sides, εr = 2.55
R1, R3
470 ohm 1 W Chip Resistor
R2
360 ohm 1/2 W Resistor
R4
20 Kohm 10 Turn Potentiometer
R5
560 ohm 1 W Resistor
C1, C11
470 pF ATC Chip Cap
C2
43 pF ATC Chip Cap
C3, C8, C9
Arco 404, 12-65 pF
C4
Arco 423, 16-100 pF
C5
120 pF ATC Chip Cap
C6
0.01 µF ATC Chip Cap
C7
30 pF ATC Chip Cap
C10
91 pF ATC Chip Cap
C12, C15
1200 pF ATC Chip Cap
C13, C14,C16, C17
0.01 µF / 500 V Chip Cap
C18
10 µF 63 V Electrolytic Capacitor
REF. 1021579C
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