Designed for FM radio transmitters, This amplifier incorporates microstrip technology and a pair of 350W SD2942 mosfet transistors.

• 86-110MHz 48 Volts
• Input/Output 50 ohms
• Pout 700W Minimum with a 6 to 8 watt input watt input.
• 19dB gain minimum.
• Low distortion Class B push-pull.
• Small size: only 4.5 in x 8.115 inch
• 68% efficiency typical.
• Power requirements 20 to 22 Amps @ 48 volts.
• Bias disable pads facilitate integration into amplifier systems that employ automatic VSWR protection.

Absolute Maximum Ratings (T case = 25C)
Symbol Parameter Value Unit
Vs Drain voltage supply 50 V DC
Is Supply Current 24 A dc
VSWR Load Mismatch (All phase angles, Id=22A, TC=+55C) 3 to 1
Tstg Storage temperature range -40 to +85C Celsius
Tc Base plate operating temperature -40 to +55C Celsius
RF IN RF Input 12.0 Watts
RF OUT RF Output 725 Watts
Electrical Specifications (T case = 25C, 50 ohm loaded, VS=48V bias=90ma x 2)
Characteristics min typ max unit
Operating Frequency range 86 110 MHz
Fundamental output power 700 W
Power Input n/a 8.0 12.0 W
Power Gain (700w output) 18.0 19.0 n/a dB
Collector Efficiency 68 70 n/a %
Collector Current (700w output) 21.5 23.0 A dc
Insertion Phase variation (unit to unit) +/-3.5 degrees
Power gain (unit to unit) +/-1.0 dB
F2 Second Harmonic -40dB dB
F3 Third Harmonic -20dB dB
Transistor Bias Current: Factory set to 90ma @48V. Adjustment is not recommended 85 90 100 ma dc