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Multilayer Board High Frequency PCB Low Dielectric Constant CT Medical Equipment
♦ What's High-Frequency PCB?
High-frequency PCB is a special circuit board designed for high-frequency electromagnetic scenes, suitable for high-frequency (frequency>300MHz, corresponding to wavelength <1 meter) and microwave (frequency>3GHz, corresponding to wavelength <0.1 meter) fields. It is based on microwave substrate copper clad laminate, combined with some processes of ordinary rigid circuit board manufacturing, or made through special processing.
♦ Features of High-Frequency PCB
Special materials: use low Dk/Df substrates such as PTFE, ceramic filling materials, LCP, etc. to reduce signal attenuation (PTFE is the first choice for 5G).
Precise transmission: impedance control of ±5%, micron-level line accuracy, 30%+ loss reduction in millimeter wave band, and excellent phase stability.
Complex process: laser drilling accuracy of ±3μm, plasma etching instead of pickling, multi-layer board integrated passive devices, and high-yield production in dust-free workshops.
♦ Applications of High-Frequency PCB
♦ Technical Parameters
Item  | Specification  | 
Laers  | 1~32  | 
Board thickness  | 0.1mm-7.0mm  | 
Material  | FR-4,CEM-1/CEM-3,PI,High Tg,Rogers  | 
Max panel size  | 32"×48"(800mm×1200mm)  | 
Min hole size  | 0.075mm  | 
Min line width  | 3mil(0.075mm)  | 
Surface finish  | OSP,HASL,Imm Gold/Nickel/Ag, Electric gold  | 
Copper thickness  | 0.5-7.0OZ  | 
Soldermask  | Green/Yellow/Black/White/Red/Blue  | 
Silkscreen  | Red/Yellow/Black/White  | 
Min PAD  | 5mil(0.13mm)  | 
Inter package  | Vacuum  | 
Outer package  | Carton  | 
Outline tolerance  | ±0.75mm  | 
Hole tolerance  | PTH:±0.05 NPTH:±0.025  | 
Certificate  | UL,ISO 9001,ISO14001,IATF16949  | 
Special request  | Blind hole+Gold finger + BGA  | 
Material Suppilers  | Shengyi, KB, Nanya, ITEQ,etc.  | 
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