Share to:
MRF171A
MRF171A
| Part Number | MRF171A |
|---|---|
| Manufacturer | NXP Semiconductors (Formerly Motorola / Freescale) |
| Category | Discrete Semiconductor Products > Transistors > FETs, MOSFETs > RF MOSFETs |
| Description | 45W VHF N-Channel Enhancement Mode Vertical DMOS RF Power MOSFET, 28V Operating Voltage, Case 211-07 Ceramic Flange Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The MRF171A is a gold-metallized N-channel enhancement-mode vertical DMOS RF power MOSFET for broadband industrial & commercial RF systems within 30 MHz ~ 200 MHz. Operating at 28V DC nominal voltage, it provides minimum 45W CW RF output power with stable gain and high efficiency. The hermetically sealed Case 211-07 ceramic flange package supports up to 30:1 full-phase VSWR ruggedness. Widely adopted for VHF radio, FM broadcast drivers, tactical communication and industrial RF generator equipment.
Core Advantages
Gold Metallization Chip
Great anti-electromigration performance, stable output during long-term CW operation.
30~200 MHz Broadband Performance
Superior linearity and efficiency, optimized for Class A RF amplifiers.
High Ruggedness Design
Tested under 30:1 full-phase VSWR, protecting the device against antenna open/short failure.
Hermetic Ceramic Flange Package
Optimized thermal conduction structure, simple flange installation for effective heat dissipation.
Key Specifications
| Brand | NXP Semiconductors |
|---|---|
| RoHS Status | Hermetic package, please contact us for RoHS version confirmation |
| EDA/CAD Resources | Symbol, Footprint & 3D Model Available |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | Case 211-07 (Flange Mount Ceramic, 4 Leads) |
| Mounting Type | Chassis Mount / Flange Bolt-Down Mounting |
| Surface Marking / Silkscreen | MRF171A,Marking |
| Transistor Technology | N-Channel Enhancement Mode Vertical DMOS RF MOSFET |
| Frequency Range | 30 MHz ~ 200 MHz (Characterized at 150 MHz) |
| Output Power | Minimum 45W CW @ VDD=28V, 150MHz |
| Operating Drain Voltage | 28 V DC (Nominal) |
| Power Gain | Minimum 17 dB @ 150 MHz; Typical 20 dB @ 30 MHz |
| Drain Efficiency | Minimum 60% @150MHz; Typical 50% @30MHz |
| Drain-Source Breakdown Voltage (Vdss) | 65 V |
| Continuous Drain Current (Id) | 4.5 A |
| Gate Threshold Voltage (Vgs(th)) | Approx. 2.5 V |
| Maximum Gate-Source Voltage (Vgs) | ±20 V |
| Reverse Transfer Capacitance (Crss) | 8 pF @ Vds=28V |
| Power Dissipation (Pd) | 115 W (Tc=25°C) |
| Third Order Intermodulation Distortion (IMD3) | -32 dBc Typical (30W PEP @ 30MHz) |
| Recommended Operation Class | Class A Amplifier |
| Operating Junction Temperature | -65°C ~ +150°C |
| Packaging Format | Tray / Anti-Static Protective Box |
Typical Applications
- VHF Land Mobile Radio (LMR) handheld & base station power amplifier and driver stages
- Commercial FM radio broadcast transmitters and pre-driver modules
- Military and tactical VHF communication radio equipment
- Industrial, Scientific and Medical (ISM) RF power generators
- Amateur Radio 2-meter band linear power amplifiers
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Processing Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
If you require datasheet samples, stock verification or bulk pricing, please submit inquiries via our contact form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the operating frequency range of MRF171A?
A1: The valid frequency band is 30 MHz to 200 MHz. Specifications are guaranteed at 150 MHz. Stable operation below 30MHz cannot be ensured.
Q2: Can MRF171A resist damage caused by antenna short circuit?
A2: Yes. This transistor has passed 30:1 full-phase VSWR load mismatch testing, improving reliability when antennas suffer open or short-circuit faults.
Q3: What RF transistors can be used as alternatives to MRF171A?
A3: Common alternatives include MRF174A and MRF134. Please note differences in power, gain and package. Input and output circuit re-matching is generally required for replacement.
Q4: What is the difference between MRF171 and MRF171A?
A4: MRF171A is the upgraded version with optimized linear gain and thermal stability. The original MRF171 has been discontinued by NXP, and MRF171A is the official recommended successor model.
Q5: Are there cross-brand competing devices similar to MRF171A?
A5: Ampleon BLF series and some STMicroelectronics VHF power MOSFETs cover similar frequency bands. However, package, impedance and ruggedness differ, and they are not pin-to-pin compatible.
Q6: Can this transistor work in Class C RF amplifiers?
A6: It is characterized and designed mainly for Class A operation. If used for Class C circuits, sufficient thermal margin evaluation is mandatory. Class A configuration is suggested for long-term stable operation.
Q7: What thermal guidelines apply to the Case 211-07 package?
A7: The flange must be firmly mounted to the heatsink with thermal grease. Keep junction temperature below +150°C to extend service life.
Q8: Can MRF171A be used for the 2m amateur radio band (144-148MHz)?
A8: Yes. Its frequency range fully covers 144~148MHz, and it is widely adopted for linear power amplifiers in 2-meter ham radio equipment.
Related Products
COMPANY INFORMATION
QR-CODE
© 2026 YingYuanYu Technology Co., Ltd