High Frequency Materials Overview

High frequency PCB materials are critical for RF, microwave, and high-speed digital applications where low loss and signal integrity matter. This page highlights key material properties, popular laminate series, and trusted brands to help you choose the right solution for your design.

Introduction to High Frequency Materials

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What are High Frequency Materials?

High frequency PCB materials are specialized substrates designed for applications operating above 500 MHz, where standard FR-4 materials become inadequate due to signal integrity issues. These materials are essential for RF, microwave, and millimeter-wave applications including wireless communications, radar systems, and high-speed digital circuits.

Critical Frequency Range

Materials are typically classified as “high frequency” when operating above 500 MHz, with specialized materials required for frequencies exceeding 1 GHz.

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Key Electrical Properties of High Frequency Materials

Dielectric Constant (Dk or εr)

Determines signal propagation speed and impedance control. Lower values (2.2-3.5) are preferred for high-frequency applications to minimize signal delay and crosstalk.

Loss Tangent (Df)

Measures dielectric losses. Values below 0.01 are typical for high-frequency materials, with premium materials achieving <0.002 for minimal signal attenuation.

Thermal Coefficient of Dk

Indicates how dielectric constant changes with temperature. Values typically range from -50 to +50 ppm/°C for stable performance across temperature variations.

Moisture Absorption

Must be minimized (<0.1%) as water absorption significantly affects electrical properties and can cause dimensional instability.

Common Types of High Frequency PCB Materials

Material Type	Dk Range	Df Range	Typical Applications
PTFE-based	2.1 - 2.5	0.0009 - 0.002	Microwave, millimeter-wave, aerospace
Hydrocarbon	2.2 - 3.0	0.001 - 0.004	Automotive radar, 5G infrastructure
Ceramic-filled	3.0 - 10.0	0.002 - 0.008	Base station antennas, filters
Low-loss FR-4	3.8 - 4.2	0.008 - 0.020	High-speed digital, moderate RF

Trusted High Frequency Materials Brands & Models

Product Series	Main Models	Dielectric Constant (Dk)	Loss Factor (Df)	Applications	Features
RO4000 Series	RO4003C, RO4350B, RO4360G2	3.38-6.15	0.0021-0.0037	High frequency PCB, Antennas, Power amplifiers	Good thermal performance, Easy processing
RO3000 Series	RO3003, RO3006, RO3010	3.0-10.2	0.0010-0.0035	Commercial microwave, Military radar, Satellite communication	Ultra-low loss, Temperature stable
RO5000 Series	RO5880, RO5870	2.2-2.33	0.0009-0.0012	High performance microwave circuits, Millimeter wave	Industry lowest loss standard
TMM Series	TMM3, TMM4, TMM10i	3.27-9.8	0.0020	Millimeter wave applications, High power amplifiers	Ceramic filled, High reliability
RT/duroid Series	RT5880, RT6006, RT6010LM	2.2-10.2	0.0009-0.0023	Aerospace, Satellite communication, Radar	PTFE based, Extremely low loss
TLY Series	TLY-3, TLY-5	2.17-2.33	0.0009-0.0013	Ultra-low loss microwave circuits, 5G millimeter wave	Best-in-class loss performance
TLX Series	TLX-0, TLX-6, TLX-8, TLX-9	2.45-2.65	0.0019-0.0025	Commercial microwave, WiFi, Bluetooth	Excellent cost-effectiveness
TLC Series	TLC-27, TLC-30, TLC-32	2.65-3.2	0.0029-0.003	Cellular communication, GPS, Base stations	Stable electrical performance
TSM Series	TSM-DS3, TSM-30	3.0-10.5	0.002-0.0025	Power amplifiers, Filters, Couplers	High dielectric constant options
CER Series	CER-10	10.0	0.0035	Miniaturized circuit design, Filters	High dielectric constant, Miniaturization
I-Tera Series	I-Tera MT40	3.45	0.0031	High-speed digital, RF mixed applications	Excellent signal integrity
Astra Series	Astra MT77	3.0	0.0017	Millimeter wave, 5G applications	Designed specifically for 5G
AD Series	AD255A, AD255C, AD300D, AD320A	2.55-3.2	0.0014-0.0018	RF power amplifiers, Base stations	High power handling capability
DiClad Series	DiClad 527, DiClad 880	2.17-2.5	0.0009-0.0015	Microwave circuits, Filters	Double-sided copper, Ultra-low loss
CuClad Series	CuClad 217, CuClad 233	2.17-2.33	0.0009-0.0013	Low loss microwave applications	PTFE based, Excellent performance
TC Series	TC350, TC600	3.5-6.0	0.0018-0.002	Antennas, Couplers, Dividers	Ceramic filled thermoset material
Megtron Series	Megtron 4, Megtron 6	3.3-3.8	0.002-0.004	High-speed digital, RF mixed circuits	Low insertion loss, High reliability
R Series	R-1515V, R-1755V	3.4-3.9	0.008-0.015	Automotive radar, 5G, Millimeter wave	Automotive grade certified
S1000 Series	S1000-2M, S1170	2.2-4.4	0.0015-0.02	5G base stations, Millimeter wave radar	Domestic alternative solution
S7136 Series	S7136, S7136H	3.6	0.008	RF power amplifiers	Excellent high temperature performance
S1141 Series	S1141, S1141A	4.1	0.012	Communication base stations, WiFi	Cost-optimized type
EM Series	EM827, EM828	3.3-3.7	0.008-0.012	Communication, Radar, Antennas	Taiwan-funded enterprise, Mature process
IT Series	IT-968G, IT-180A	3.9-4.2	0.02-0.025	RF modules, Base stations	High cost-performance ratio

Key Application Markets for High Frequency PCBs

Wireless Communications

5G infrastructure, WiFi 6E/7, cellular base stations, and satellite communications require materials with stable electrical properties and low loss characteristics.

Automotive Radar

77 GHz and 79 GHz automotive radar systems demand materials with excellent dimensional stability and low moisture absorption for reliable performance.

Aerospace & Defense

Military radar, electronic warfare systems, and satellite communications require materials meeting stringent reliability and performance specifications.

Test & Measurement

High-frequency test equipment and calibration standards require materials with extremely stable and well-characterized electrical properties.

Why Choose Highleap Electronics for High Frequency PCBs?

Certified Material Sourcing

We work closely with trusted suppliers like Rogers, Taconic, and Shengyi to ensure consistent quality in high frequency laminates.

Precision Manufacturing

Our advanced fabrication processes support tight impedance control and minimal signal loss for RF and microwave designs. This ensures consistent high-frequency performance, even in complex multilayer or hybrid PCB structures.

End-to-End Services

From prototyping to volume production and SMT assembly, we provide a full-service solution under one roof. This helps reduce variation in dielectric properties, critical for stable high-frequency signal transmission.

Reliable Quality Assurance

With ISO9001, ISO13485, IATF16949 certifications, and 100% electrical testing, we guarantee performance and reliability.

Flexible Customization Options

We support customized board thickness, material combinations, and surface finishes to meet your specific RF design requirements.

Engineering Support

Our team assists with material selection and stackup optimization based on your specific requirements. Feel free to contact us at [email protected] or call +86 135 0306 2089 for personalized assistance.

Partner with Highleap

With years of experience, we specialize in handling various PCB laminate materials. We provide high-quality, reliable PCB manufacturing and assembly services to bring your design to life.

Expertise in Diverse Materials

We have extensive experience handling various high-performance PCB laminates for optimal project outcomes.

Strict Quality Control

Rigorous quality control measures throughout production ensure consistently high-standard, reliable PCBs.

Advanced Manufacturing Technology

Utilizing advanced technology and equipment enables high-precision and efficient PCB production.

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