The RA07H3340M is a 7-watt RF MOSFET Amplifier Module for 12.5-volt portable radios that operate in the 330- to 400-MHz range. This module is designed for non-linear FM modulation, but may also be used for linear modulation by setting the drain quiescent current with the gate voltage and controlling the output power with the input power.
The RA07H3340M is a 7‑watt RF MOSFET amplifier module designed for 12.5 V portable radios operating in the 330‑400 MHz band. It uses enhancement‑mode MOSFET transistors and can be driven directly from a battery, with output power controlled by gate voltage or input power.
The module is housed in an H46S package (30 × 10 × 5.4 mm) and includes a plastic cap for mechanical protection. Recommended mounting uses a flat heat sink with a torque of 1.8‑3.0 kgf‑cm for M2.6 screws, and ESD precautions are required due to its sensitivity down to 1000 V.
| Frequency Range | 330‑400 MHz |
|---|---|
| Output Power | 7 W (typical at Vpp=12.5 V, Vac=3.5 V, Pin=20 mW) |
| Total Efficiency | 40 % |
| Gate Current | 1 mA (typical at Veg=3.5 V) |
| Package Size | 30 × 10 × 5.4 mm |
| Supply Voltage | 12.5 V (Vpp) |
| Input Power | 20 mW |
| Recommended Mounting Torque | 1.8‑3.0 kgf‑cm (M2.6 screws) |
| ESD Sensitivity | Sensitive down to 1000 V |
Nominal output power becomes available at a gate voltage of about 3 V (typical) to 3.5 V (maximum).
The module should be screwed to a flat heat sink first, then the leads are soldered; use M2.6 screws tightened to 1.8‑3.0 kgf‑cm.
RoHS compliance is indicated by the letter “G” after the Lot Marking.
A thermal resistance of about 2.85 °C/W (case‑air) is recommended for reliable operation at 7 W output.