The RA55H4452M is a 55-watt RF MOSFET Amplifier Module for 12.5-volt mobile radios that operate in the 440- to 520-MHz range. It features low-power control current, broadband frequency range, etc.
The RA55H4452M is a 55‑watt RF MOSFET amplifier module designed for 12.5‑V mobile radios operating in the 440‑520 MHz band. It provides up to 55 W output power with a typical efficiency of around 43‑45 % and can be used for both non‑linear FM and linear AM modulation.
The document includes electrical characteristics, mechanical dimensions, recommended mounting procedures, thermal design guidelines, and safety precautions such as ESD sensitivity and RoHS compliance. It is intended for designers integrating the module into mobile radio equipment or base‑station applications.
| Frequency Range | 440 – 520 MHz |
|---|---|
| Maximum Output Power | 55 W |
| Drain Voltage (Vpp) | 12.5 V |
| Gate Voltage (Vee) | up to 5 V |
| Input Power (Pin) | 100 mW |
| Package Size | 66 × 21 × 9.88 mm |
| Low‑Power Control Current | 1 mA (typ) at Vee = 5 V |
| Operating Temperature Range | -30 °C to +110 °C |
| Storage Temperature Range | -40 °C to +110 °C |
M3 screws should be tightened to a torque of 4.0 – 6.0 kgf·cm.
The module is sensitive to ESD voltages down to 1000 V and requires appropriate precautions.
RoHS compliance is indicated by the letter “G” after the lot marking.
The typical low‑power control current is 1 mA when the gate voltage is 5 V.