NXP Semiconductors MRF300AN-13MHZ

Overview

MRF300AN-13MHZ from NXP Semiconductors is a 13.56 MHz reference circuit board built around the MRF300AN 300 W RF power LDMOS transistor, operating at 50 Vdc with 320 W CW output, 28.1 dB power gain, and 79.7% drain efficiency - designed for industrial plasma etching and RF induction heating systems.

For engineers reviewing the MRF300AN-13MHZ datasheet, MRF300AN-13MHZ application, MRF300AN-13MHZ pinout, or MRF300AN-13MHZ equivalent, this reference design delivers validated impedance matching (Z_source = 12.0 + j5.2 Ω, Z_load = 5.1 – j1.0 Ω), thermal management for 76°C case temperature, and ruggedness against >65:1 VSWR at 40.68 MHz and 230 MHz.

Technical Context

This board implements a single-ended, common-source Class AB amplifier using the MRF300AN in TO-247-3L package, with gate bias set to 100 mA quiescent drain current and input/output matching networks optimized for 13.56 MHz ISM band operation. It includes DC blocking, RF chokes, and broadband decoupling with 220 µF/100 V electrolytic and multiple chip capacitors.

The layout follows a 2″×3″ FR4 PCB (0.087″ thick, ε_r = 4.8, 2 oz copper), with component values fully specified: L1 = 390 nH, L2 = 33 nH, L3/L4 = 140 nH, L5 = 250 nH, C1 = 1 nF, C2–C4 = 430 pF, C5 = 75 pF, C6 = 330 pF, and C7–C10 = 6.8 nF.

Key Specifications

Availability

MRF300AN-13MHZ is available at Aetrix Electronics and suitable for industrial plasma etching, RF induction heating, and medical MRI subsystems requiring stable component supply and proven reference design validation.

Supply support for MRF300AN-13MHZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in RF power devices and high-reliability analog components.

The MRF300AN-13MHZ belongs to NXP's wideband RF power LDMOS transistor reference circuit family, engineered to accelerate development of robust, high-efficiency HF/VHF amplifiers for industrial and scientific equipment.

FAQ

What is the MRF300AN-13MHZ and how does it differ from the MRF300AN transistor?

The MRF300AN-13MHZ is a complete 13.56 MHz reference circuit board - not a bare transistor - built around the MRF300AN RF power LDMOS device. It includes all matching components, biasing network, decoupling, and PCB layout optimized for 320 W CW output at 13.56 MHz. Unlike the standalone MRF300AN, the MRF300AN-13MHZ delivers plug-and-test functionality for rapid evaluation and prototyping.

Does the MRF300AN-13MHZ include the MRF300AN transistor?

Yes, the MRF300AN-13MHZ reference circuit board includes one MRF300AN RF power LDMOS transistor mounted in TO-247-3L package (Pin 1: Gate, Pin 2: Source, Pin 3: Drain), as confirmed in Table 7 and Figure 3 of the official NXP documentation.

What are the key thermal specifications of the MRF300AN-13MHZ reference design?

The MRF300AN-13MHZ reference circuit is characterized for 76°C case temperature under 300 W CW operation, with thermal resistance R_θJC = 0.55 °C/W. The board uses a 2 oz copper FR4 substrate and specifies mounting requirements including flatness ≤ 0.05 mm and thermal interface material per NXP AN1955 guidelines.

Can the MRF300AN-13MHZ be used at frequencies other than 13.56 MHz?

No - the MRF300AN-13MHZ is specifically tuned for 13.56 MHz operation. Its matching network (L1–L5, C1–C14) and layout are optimized for that frequency; performance degrades significantly outside ±1 MHz. For other bands, NXP provides dedicated variants: MRF300AN-27MHZ, MRF300AN-40MHZ, etc.

Is the MRF300AN-13MHZ RoHS compliant and qualified for industrial use?

Yes, the MRF300AN-13MHZ reference circuit complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 0 (peak reflow ≤ 225°C). It operates across –40°C to +150°C case temperature range and is supported by NXP's 15-year product longevity program.