SD2921 Datasheet, PDF (6/10 Pages) STMicroelectronics – RF POWER TRANSISTORS HF/VHF/UHF N-CHANNEL MOSFETs

SD2921
30 MHz Test Circuit Schematic (Engineering Test Circuit)
VG +
+50V
30 MHz Test Circuit Component Part List
T1
9:1 Transformer, 25 ohm Flexible Coax with extra shield .090 OD 15” Long
T2
1:4 Transformer, 50 ohm Flexible Coax .225 OD 15” Long
FB1
Toroid, 1.7” OD .30” ID 220u 4 Turns
FB2
Surface Mount EMI Shield Bead
FB3
Toroid, 1.7” OD .300” ID 220u 3 Turns
RFC1
Toroid, 0.5” OD 0.30” ID, 125u 4 turns 12 awg wire
PCB
0.062” Woven Fiberglass, 1 oz. Copper, 2 Sides, er = 2.55
C1, C4, C6, C7, C8, 0.01 uF ATC Chip Cap
C5
470 pF ATC Chip Cap
C9, C11, C12, C13 0.01 uF ATC Chip Cap
C10
10 uF 63V Electrolytic Capacitor
C2, C3
750 pF ATC Chip Cap
C14
100 uF 63V Electrolytic Capacitor
R1, R3
1K ohm 1W Chip Resistor R2
680 ohm 3W Wirewound Resistor
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