BLF571#3

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© Ampleon The Netherlands B.V. 2015. All rights reserved.

Product data sheet

Rev. 3 — 1 September 2015

8 of 14

BLF571

HF / VHF power LDMOS transistor

8.2 Test circuit

[1]

American Technical Ceramics type 100B or capacitor of same quality.

[2]

Printed-Circuit Board (PCB): Rogers 5880;

thickness copper plating = 35

m.

Table 9.

List of components

All capacitors should be soldered vertically. For test circuit, see Figure 9 and Figure 10.

Component

Description

Value

Remarks

C1, C3, C4,

C5, C14

multilayer ceramic chip capacitor 100 pF

[1]

C2

multilayer ceramic chip capacitor 39 pF

[1]

C6

multilayer ceramic chip capacitor 68 pF

[1]

C7, C9

multilayer ceramic chip capacitor 1 nF

[1]

C8

multilayer ceramic chip capacitor 4.7

F

TDK C4532X7R1E475MT020U or equivalent

C10

multilayer ceramic chip capacitor 8.2 pF

[1]

C11

electrolytic capacitor

220

F

C12

multilayer ceramic chip capacitor 33 pF

[1]

C13

multilayer ceramic chip capacitor 15 pF

[1]

L1

1 turn enamelled copper wire

D = 5.5 mm;

d = 1 mm;

length = 1 mm

L2

2 turns enamelled copper wire

D = 3.5 mm;

d = 1 mm;

length = 3 mm

L3

5 turns enamelled copper wire

D = 6 mm;

d = 1 mm;

length = 5 mm

L4

3.3 turns enamelled copper wire

D = 3 mm;

d = 1 mm;

length = 4 mm

L5

3 turns enamelled copper wire

D = 3 mm;

d = 1 mm;

length = 3 mm

L6

stripline

-

[2] (L

 W) 16.5 mm  2.4 mm

L7, L8, L10,

L11, L17, L19,

L20

stripline

-

[2] (L

 W) 3.0 mm  5.0 mm

L9

stripline

-

[2] (L

 W) 43.0 mm  2.4 mm

L12, L15

stripline

-

[2] (L

 W) 3.5 mm  2.4 mm

L13, L14

stripline

-

[2] (L

 W) 8.0 mm  8.0 mm

L16

stripline

-

[2] (L

 W) 3.0 mm  5.9 mm

L18

stripline

-

[2] (L

 W) 27.0 mm  2.4 mm

L21

stripline

-

[2] (L

 W) 28.5 mm  2.4 mm

R1

metal film resistor

1000

; 0.6 W