MRF177

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MRF177

+BOM

FET RF 2CH 65V 400MHZ 744A-01

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Specifications

Attribute Value
Package / Case Tray
Part Status Active
Transistor Type 2 N-Channel (Dual) Common Source
Frequency 400MHz
Gain 12dB
Voltage - Test 28 V
Current Rating (Amps) 16A
Current - Test 200 mA
Power - Output 100W
Voltage - Rated 65 V

Overview

Description

The MRF177 is a high-power RF transistor designed for VHF and UHF applications, commonly used in linear and Class AB amplifiers. Manufactured by NXP Semiconductors, it operates in the 136–175 MHz and 225–400 MHz frequency ranges, delivering 50W output power with high efficiency.
Key features:
- High gain (13 dB typical)
- 28V operating voltage
- Excellent thermal stability
- Robust TO-270 package
Ideal for land mobile radio, military comms, and broadcast systems, the MRF177 ensures reliable performance in demanding environments. Its rugged design supports continuous wave (CW) and pulsed operation, making it versatile for RF power amplification.
For detailed specs, refer to the datasheet from NXP.

Pinout

The MRF177 is an RF power transistor designed for VHF/UHF applications, commonly used in linear amplifiers.
- Pin Count: 4 (Flange-mounted package, typically with 2 RF pins (input/output), 1 ground (flange), and 1 bias pin).
- Function:
- RF Input (Gate): Accepts the signal to be amplified.
- RF Output (Drain): Delivers the amplified signal.
- Bias (Source): Controls the operating point (often grounded via a resistor/inductor).
- Flange (Ground): Provides thermal/electrical grounding.
Key specs:
- Frequency: Up to 500 MHz.
- Power: 125W (typical, under specified conditions).
- Class AB operation for linear amplification.
Used in broadcast, military, and industrial RF systems.

Application

MRF177 is a high-power RF transistor commonly used in:
1. RF Amplifiers – Boosts signal strength in communication systems.
2. Broadcast Transmitters – Enhances TV and radio signal transmission.
3. Industrial Heating – Powers RF heating and plasma generation.
4. Military & Aerospace – Supports radar and secure communication.
5. Medical Equipment – Used in RF-based medical devices like diathermy.
Its high-frequency and power-handling capabilities make it ideal for demanding RF applications.

Package

The MRF177 is a high-power RF transistor typically packaged in a TO-270 (TO-3P) metal-cased package. This robust design ensures efficient heat dissipation and reliability for high-frequency applications. The package includes three leads (base, emitter, collector) and is commonly used in amplifiers and RF systems.

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