SD1457 datasheet(1/5 Pages) STMICROELECTRONICS

Part #	SD1457

Description	RF & MICROWAVE TRANSISTORS FM BROADCAST APPLICATIONS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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FM BROADCAST APPLICATIONS

RF & MICROWAVE TRANSISTORS

.500 4LFL (M174)

epoxy sealed

.

108 MHz

.

28 VOLTS

.

EFFICIENCY 75%

.

COMMON EMITTER

.

GOLD METALLIZATION

.

POUT

= 75 W MIN. WITH 10.0 dB GAIN

DESCRIPTION

The SD1457 is a 28 V gold metallized epitaxial

silicon NPN planar transistor designed for FM VHF

broadcast transmitters.

This device utlizes diffused emitter resistors to

achieve infinite VSWR at rated operating condi-

tions.

PIN CONNECTION

BRANDING

SD1457

ORDER CODE

SD1457

ABSOLUTE MAXIMUM RATINGS (Tcase

= 25°C)

Symbol

Parameter

Value

Uni t

VCBO

Collector-Base Voltage

65

V

VCEO

Collector-Emitter Voltage

30

V

VCES

Collector-Emitter Voltage

60

V

VEBO

Emitter-Base Voltage

4.0

V

IC

Device Current

10

A

PDISS

Power Dissipation

100

W

TJ

Junction Temperature

+200

°C

TSTG

Storage Temperature

− 65 to +150

°C

RTH(j-c)

Junction-Case Thermal Resistance

1.5

°C/W

SD1457

1. Collector

3. Base

2. Emitter

4. Emitter

THERMAL DATA

November 1992

1/5

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