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RD15HVF1 TO-220 N-Channel RF Power MOSFET 15W 175MHz
RD15HVF1 TO-220 N-Channel RF Power MOSFET 15W 175MHz
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RD15HVF1 TO-220 N-Channel RF Power MOSFET — 15W / 175MHz
The RD15HVF1 is a silicon N-Channel RF power MOSFET from Mitsubishi (now Renesas) in a TO-220 package, designed for VHF FM broadcast and amateur radio power amplifier applications. Rated at 15W output power at 175MHz with a 12.5V supply, it is the standard replacement transistor in commercial FM transmitters and VHF PA modules.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | RD15HVF1 |
| Package | TO-220 (flange mount) |
| Frequency Range | DC – 175MHz |
| Output Power (Pout) | 15W @ 175MHz, VDD=12.5V |
| Power Gain | ~13dB @ 175MHz |
| Drain Supply Voltage (VDD) | 12.5V |
| Drain Current (ID) | 3A continuous |
| Input Impedance | ~3Ω (matched to 50Ω via network) |
| Efficiency | ~60% typical @ 175MHz |
| Operating Temperature | −55°C to +150°C |
Why Choose RD15HVF1?
- 15W at 175MHz — Covers the entire VHF FM broadcast band (87.5–108MHz) with margin
- 13dB Power Gain — Amplifies 1W input to 15W output in a single stage
- TO-220 Package — Easy heatsink mounting; standard footprint for PA module replacement
- Mitsubishi/Renesas Quality — Industry-standard RF transistor used in commercial FM transmitters worldwide
- Broadband Operation — DC to 175MHz covers HF, VHF, and FM broadcast bands
Typical Applications
- VHF FM broadcast transmitter PA stage (87.5–108MHz)
- Amateur radio VHF power amplifier (2m band, 144–148MHz)
- Commercial FM transmitter repair (replaces failed PA transistor)
- Marine VHF radio power amplifier
- RF signal booster and repeater PA stage
Design Notes
Requires input/output impedance matching networks (typically L-network or π-network) to transform 50Ω system impedance to the transistor’s low input impedance (~3Ω). Use a heatsink with thermal resistance ≤2°C/W for continuous 15W operation. Bias at VGS ~2–3V for Class AB operation.
FAQ
Q: Can RD15HVF1 be used at 144MHz (2m amateur band)?
A: Yes — rated to 175MHz, so 144MHz operation is well within spec with slightly higher efficiency.
Q: What’s the difference between RD15HVF1 and RD16HHF1?
A: RD16HHF1 is rated for HF (30MHz) at 16W; RD15HVF1 is optimized for VHF (175MHz) at 15W. Different matching networks required.
Package Contents
- 1× RD15HVF1 TO-220 RF Power MOSFET
