1998 Feb 09

16

Philips Semiconductors

Product specification

UHF linear push-pull power transistor

BLV57

List of components:

Note

1. ATC means American Technical Ceramics.

C2 = C3 = C18 = C19 = 33 pF multilayer ceramic chip capacitor (cat. no. 2222 851 13339)

C4 = C9 = C13 = C17 = 1,2 to 3,5 pF film dielectric trimmer (cat. no. 2222 809 05001)

C5 = C7 = C14 = C16 = 100 nF multilayer ceramic chip capacitor (cat. no. 2222 852 59104)

C8 = C10 = C11 = C12 = 220 pF multilayer ceramic chip capacitor (cat. no. 2222 852 13221)

C9 and C13 are placed 8,0 and 14,0 mm from transistor edge, respectively.

L1 = L2 = L13 = L14 = 50

Ω semi-rigid cable; outer diameter 2,2 mm; length 29,0 mm. These cables are soldered on

75

Ω striplines (1,1 mm × 28,0 mm). The centre conductors of the cables L1 and L13

are not connected.

L3 = L4 = 52

Ω stripline (2,0 mm × 16,5 mm)

L5 = L8 = 470 nH microchoke

L6 = L7 = 39

Ω stripline (3,1 mm × 8,0 mm)

L9 = L12 = 1 turn Cu wire (1,0 mm); int. dia. 5,5 mm; leads 2

× 3,5 mm

L10 = L11 = 39

Ω stripline (3,1 mm × 34,0 mm)

L3, L4, L6, L7, L10 and L11 are striplines on a double Cu-clad printed-circuit board with PTFE fibre-glass dielectric

(

R1 = 10

Ω carbon resistor.