BLF878_2

© NXP B.V. 2009. All rights reserved.

Product data sheet

Rev. 02 — 15 June 2009

12 of 18

NXP Semiconductors

BLF878

UHF power LDMOS transistor

8.

Test information

[1]

American technical ceramics type 180R or capacitor of same quality.

[2]

American technical ceramics type 100B or capacitor of same quality.

[3]

American technical ceramics type 100A or capacitor of same quality.

[4]

Printed-Circuit Board (PCB): Rogers 5880;

thickness copper plating = 35

µm.

Table 9.

List of components

For test circuit, see Figure 14, Figure 15 and Figure 16.

Component

Description

Value

Remarks

B1, B2

semi rigid coax

25

Ω; 43.5 mm

EZ90-25-TP

C1, C2

multilayer ceramic chip capacitor

8.2 pF

[1]

C3, C9

multilayer ceramic chip capacitor

3.9 pF

[2]

C4

multilayer ceramic chip capacitor

2.7 pF

[2]

C5, C7, C8

multilayer ceramic chip capacitor

6.8 pF

[1]

C6

multilayer ceramic chip capacitor

2.2 pF

[2]

C10

multilayer ceramic chip capacitor

47 pF

[2]

C11, C12

multilayer ceramic chip capacitor

100 pF

[1]

C13, C14

multilayer ceramic chip capacitor

100 pF

[2]

C15, C16

multilayer ceramic chip capacitor

10

µF

TDK C570X7R1H106KT000N or

capacitor of same quality.

C17, C18

electrolytic capacitor

470

µF; 63 V

C20

multilayer ceramic chip capacitor

15 pF

[3]

C21

trimmer

0.6 pF to 4.5 pF

Tekelec

C22

multilayer ceramic chip capacitor

11 pF

[3]

C23

multilayer ceramic chip capacitor

3.9 pF

[3]

C24

multilayer ceramic chip capacitor

4.7 pF

[3]

C25, C26, C27

multilayer ceramic chip capacitor

100 pF

[3]

C28, C29

multilayer ceramic chip capacitor

560 pF

[2]

C30, C31

electrolytic capacitor

10

µF

L1

stripline

-

[4]

(W

× L) 24 mm × 13 mm

L2

stripline

-

[4]

(W

× L) 15 mm × 24.5 mm

L3

stripline

-

[4]

(W

× L) 5 mm × 21 mm

L4

stripline

-

[4]

(W

× L) 2.4 mm × 6mm

L5, L23

stripline

-

[4]

(W

× L) 2 mm × 43.5 mm

L6

stripline

-

[4]

(W

× L) 2 mm × 4.5 mm

L7

stripline

-

[4]

(W

× L) 5.5 mm × 24 mm

L20

stripline

-

[4]

(W

× L) 15 mm × 5mm

L21

stripline

-

[4]

(W

× L) 3 mm × 39 mm

L22

stripline

-

[4]

(W

× L) 2.4 mm × 5.7 mm

R1, R2

resistor

5.6

Ω

long wires

R3, R4

potentiometer

10 k

Ω

R5, R6

resistor

10 k

Ω

R7, R8

resistor

1 k

Ω