MS1281
RF & MICROWAVE TRANSISTORS FM BROADCAST APPLICATIONS
Features
• • • • • • 108 MHz 28 VOLTS GOLD METALLIZATION PO...
MS1281
RF & MICROWAVE
TRANSISTORS FM BROADCAST APPLICATIONS
Features
108 MHz 28 VOLTS GOLD METALLIZATION POUT = 150 WATTS GP = 9.2dB MINIMUM COMMON EMITTER CONFIGURATION
DESCRIPTION:
The MS1281 is a 28V silicon
NPN planar
transistor designed primarily for VHF FM broadcast transmitters. Diffused emitter ballast provide infinite VSWR capability under rated operating conditions.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25° C)
Symbol
VCBO VCEO VCES VEBO IC PD Tj T STG
Parameter
Collector-Base Voltage Collector-Emitter Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation Junction Temperature Storage Temperature
Value
60 25 60 4.0 16 230 200 -65 to +150
Unit
V V V V A W
m o c . u 4 Thermal Data t e e h s a t a d . w w w
RTH(J-C)
MS1281.PDF 5-8-03
°C °C
Thermal Resistance Junction-case
0.75
° C/W
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MS1281
STATIC
ELECTRICAL SPECIFICATIONS (Tcase (Tcase = 25 ° C)
Symbol
BVCBO BVCES BVCEO BVEBO hFE IC = 100 mA IC = 100 mA IC = 100 mA IE = 20 mA VCE = 5 V
Test Conditions Min.
IE = 0 mA RBE = 10 Ω IB = 0 mA IC = 0 mA IC = 1 A 60 55 25 4.0 20
Value Typ.
-----------
Max.
--------150
Unit
V V V V ---
DYNAMIC
Symbol
POUT GP
η f = 108MHz f = 108MHz f = 108MHz f = 1 MHz
Test Conditions Min.
PIN = 18W PIN = 18W PIN = 18W ...