August 1986

8

Philips Semiconductors

Product specification

VHF power transistor

BLY89C

Fig.9

handbook, halfpage

0

5

10

15

50

0

25

MGP869

PL

(W)

PS (W)

f = 175 MHz

typical values

VCC = 13.5 V

VCC = 12.5 V

Th = 25 °C

Th = 70 °C

Fig.10

handbook, halfpage

0

15

10

5

0

150

100

50

0

Gp

(dB)

40

MGP870

20

η

(%)

PL (W)

f = 175 MHz

Th = 25 °C

typical values

VCC = 13.5 V

VCC = 12.5 V

Gp

η

Fig.11 R.F. soar.

handbook, halfpage

1

1.1

1.2

1.3

40

0

MGP871

30

20

10

PLnom

(W)

VSWR = 1

VCC

VCCnom

50

VSWR =

10

PS

PSnom

Conditions for R.F. SOAR

f = 175 MHz

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

ratio.