Double-layer 1.6mm TMM4 PCB Silver and Gold Plating

This high-performance 2-layer PCB is built with Rogers TMM4—a premium thermoset microwave material composed of ceramic, hydrocarbon, and thermoset polymer composite. Engineered for robust RF/microwave applications, it combines the mechanical resilience of ceramic with the process compatibility of traditional materials, eliminating the need for specialized fabrication techniques.

PCB Specification

PCB Stack-up Details

Material Overview: Rogers TMM4

Rogers TMM4 is a specialized thermoset microwave laminate designed to bridge the gap between ceramic and PTFE materials—offering strong mechanical/chemical properties without requiring specialized production techniques. Its ceramic-hydrocarbon-thermoset polymer composition delivers exceptional reliability for stripline and microstrip applications, including wire-bonding (no pad lifting or substrate deformation) and plated through-holes. Unlike traditional PTFE laminates, TMM4’s thermoset resin base ensures compatibility with all common printed wiring board (PWB) processes, simplifying fabrication while maintaining high performance for RF/microwave circuits.

Key Material Features

Core Benefits

Superior Mechanical Stability: Resists creep and cold flow, ensuring long-term dimensional integrity even under stress (e.g., vibration in satellite systems).

Chemical Resistance: Withstands process chemicals used in PCB fabrication, reducing damage and improving yield rates.

Reliable Wire-Bonding: Thermoset resin base eliminates pad lifting or substrate deformation—critical for high-precision RF/microwave components.

High Plated Through-Hole Reliability: Ideal for multi-layer scalability, with consistent performance across production runs.

Standard Process Compatibility: Works with all common PWB manufacturing techniques, no specialized equipment required (lowers production complexity and cost).

Copper-Matched CTE: X/Y-axis CTE (16 ppm/°K) matches copper, minimizing thermal stress on solder joints and extending component lifespan.

Typical Applications

This PCB is optimized for high-performance RF/microwave systems requiring reliability and process flexibility, including:

-RF and Microwave Circuitry

-Power Amplifiers and Combiners

-Filters and Couplers

-Satellite Communication Systems

-Global Positioning Systems (GPS) Antennas

-Patch Antennas

-Dielectric Polarizers and Lenses

-Chip Testers

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen China, severing cellular base station antenna, satellite, high frequency passive components, microstrip line and band line circuit, millimeter wave equipment, radar systems, digital radio frequency antenna and other fields worldwide for 18 years. Our high frequency PCBs are mainly built on 3 high frequency material brands: Rogers Corporation, Taconic and Wangling. Dielectric constant ranges from 2.2 to 10.2 etc.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

Main Business & PCB Applications

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. We also have divisions of FR-4 circuit board, flexible circuits and metal core PCBs featured as prototypes, small runs to mass production. We actively research and build such high value added PCB projects as HDI, quick turn, impedance control, heavy copper and backplane board etc. This has made our PCB products generate an effective prolongation and complementation, as well as formation of integrated products line ranging from low-end to high-end.The circuit boards are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

Main Material Partners