August 1986

8

Philips Semiconductors

Product specification

VHF power transistor

BLV10

Fig.9 Typical values; f = 175 MHz;

handbook, halfpage

012

15

0

5

10

MGP255

PL

(W)

PS (W)

70

°C

Th = 25 °C

Fig.10 Typical values; f = 175 MHz;

handbook, halfpage

0

5

10

20

15

0

5

10

150

0

50

100

15

MGP256

Gp

(dB)

Gp

PL (W)

Th = 70 °C

25

°C

25

°C

70

°C

η

η

(%)

The transistor has been developed for use with

unstabilized supply voltages. As the output power

and drive power increase with the supply voltage,

the nominal output power must be derated in

accordance with the graph for safe operation at

supply voltages other than the nominal. The graph

shows the permissible output power under nominal

conditions (VSWR = 1), as a function of the

expected supply over-voltage ratio with VSWR as

parameter.

The graph applies to the situation in which the drive

over-voltage ratio.

handbook, halfpage

0

1.1

1.2

1.3

10

7.5

2.5

0

5

MGP257

50

10

VCE

VCEnom

PS

PSnom

PLnom

(W)

(VSWR = 1)

VSWR =