BLU30/12 Просмотр технического описания (PDF) - Philips Electronics

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производитель

BLU30/12

UHF power transistor

Philips Electronics 

Philips Semiconductors

UHF power transistor

Product specification

BLU30/12

APPLICATION INFORMATION

Mode of operation

Collector-emitter voltage (d.c.)

Frequency

Load power

Power gain

Collector efficiency

Heatsink temperature

In narrow-band test circuit; class-B; c.w.

VCE

12,5 V

f

470 MHz

PL

>

Gp

typ.

30 W

6,0 dB

7,4 dB

>

ηC

typ.

55 %

66 %

Th

25 °C

handbook, full pagewidth

50 Ω

C1

,,,,L1

T.U.T.

C2 C3

L2

,,L6

C8

50 Ω

L4

C6

C7

C4

R2 C5

R1

L3

L5

MDA328

+VCC

Fig.6 Class-B test circuit at f = 470 MHz.

List of components:

C1 = C2 = C7 = C8 = 2 to 9 pF film dielectric trimmer (cat. no. 2222 809 09002)

C3 = C6 = 3,9 pF ceramic capacitor (500 V)

C4 = 100 pF feed-through capacitor

C5 = 100 nF polyester film capacitor

L1 = stripline (24,0 mm × 6,7 mm)

L2 = 10 turns closely wound enamelled Cu-wire (0,4 mm); int. diam. 4 mm

L3 = 2 turns enamelled Cu-wire (0,6 mm); Ferroxcube tube core, grade 3B5 (cat. no. 4313 020 15170)

L4 = 12,6 nH; 2,5 turns enamelled Cu-wire (0,7 mm); int. diam. 4 mm; length 3 mm; leads 2 × 5 mm

L5 = Ferroxcube wideband h.f. choke, grade 3B (cat. no. 4312 020 36642)

L6 = stripline (28,4 mm × 6,7 mm)

R1 = R2 = 10 Ω carbon resistor

L1 and L6 are striplines on a double Cu-clad printed circuit board with P.T.F.E. fibre-glass dielectric (εr = 2,74);

thickness 1⁄16 inch.

Component lay-out and printed-circuit board for 470 MHz test circuit are shown in Figs 7 and 8.

January 1985

5

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