Ampleon BLF177 – 50 V RF Power MOSFET for Industrial Applications
The Ampleon BLF177 is a high-power N‑channel VDMOS RF transistor designed for broadband RF amplifier applications across 1 MHz to 108 MHz, with typical operation up to 175 MHz. Operating at 50 V, it delivers 150 W output power in CW and PEP modes. It is suitable for FM broadcasting, industrial RF heating, and military communication systems where high linearity and reliability are required.
The transistor provides a power gain of 19–20 dB and a drain efficiency of around 70%, supporting both linear and Class-B amplifier designs. It is packaged in a flanged SOT‑121B ceramic module with a beryllium oxide (BeO) substrate, offering low thermal resistance and consistent performance under full load mismatches.
The BLF177 is built for durability in industrial and commercial environments. It operates over a wide temperature range (–65 °C to +200 °C) and maintains stable performance under varying loads. The transistor is RoHS compliant. For more detailed information, refer to the Ampleon BLF177 datasheet.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 1 MHz – 108 MHz (typical up to ~175 MHz) |
| Output Power (PL) | 150 W (CW / PEP) at VDS = 50 V |
| Power Gain (Gp) | ~20 dB @ 28 MHz; ~19 dB @ 108 MHz |
| Drain Efficiency (ηD) | ~70% @ 108 MHz, VDS = 50 V |
| Drain-Source Voltage (VDS) | Nominal 50 V; maximum 110 V |
| Maximum Drain Current (ID) | 16 A |
| Power Dissipation (Pd) | 220 W @ mounting base (Tmb = 25 °C) |
| Package | SOT‑121B, flanged ceramic module, BeO substrate |
| Capacitances (typical) | CIS ≈ 480 pF; COS ≈ 190 pF; CRS ≈ 14 pF |
| Thermal Resistance | Rθj–mb ≤ 0.8 K/W; Rθmb–hs ≤ 0.2 K/W |
| Operating Temperature Range | –65 °C to +200 °C |
| Compliance | RoHS |
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