SD2931-10 datasheet(11/19 Pages) STMICROELECTRONICS

部品番号	SD2931-10

部品情報	RF power transistor: HF/VHF/UHF N-channel power MOSFETs

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11 / 19 page

SD2931-10

Test circuit

Doc ID 7076 Rev 9

11/19

7

Test circuit

Figure 16.

175 MHz schematic (production test circuit)

Note: All dimensions in inches

REF. 1021579C

Table 8.

Component part list

Component

Description

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 850

μ 2 turns

FB2, FB3

VK200

FB4

Shield bead, 1” OD 0.5” ID 850

μ 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

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