High-frequency PCBs
High-frequency boards - the key technology of VARIOPRINT
30 years' experience in the manufacture of high-frequency circuit boards has made us the leading manufacturer of this technology. Embedded heatsinks, multilayer circuits from pure Teflon (PTFE material), manufactured using fusion-bonding or designs with mixed materials (FR4 and PTFE), have become standard technologies for VARIOPRINT, and are carried out in large numbers and with stable and controlled process parameters every day.
Due to the long-standing, close co-operation with our material suppliers (Rogers, Taconic, Neltec, etc.), we are able to offer you a unique package for your HF- application. Our engineering team with trained antenna developers will support you in the selection of suitable substrates, in the construction or the PCB design.
Benefit from our unique HF technology expertise.
Today, VARIOPRINT is one of the leading manufacturers of HF circuit boards for radar applications, as used in the automotive industry, for instance. Thanks to specially tuned processes, we can offer our customers maximum security in HF performance, especially in the range of 77 and 79 GHz applications
Performance range
| Design and technology Multilayer and mixed construction circuits, PTFE fusion bonding, heatsink technology and pure PTFE softboards. Blind vias, buried vias, µ-vias with and without copper fill and plugged vias with/without overplating. |
| Dimension and formats Thickness 0.2 mm to 4.8 mm Format up to 569x490 mm Panel formats used 460x610mm and 530x610 mm |
| Solder resists and additional prints Photo-sensitive solder mask in different colours, applied by spray coating and screen printing Registration solder mask Additional prints, such as legend print, peelable mask and carbon print |
| Conductive pattern structuring Copper cladding from 18 μm to 210 μm Conductor widths and spacings Standard: 75 µm / 100 µm Special: 50 µm / 50 µm Etching tolerances Standard: +-20 µm Special +-10 µm |
Mechanical machining |
| Materials HF substrates from all established manufacturers, including Rogers, Taconic, Neltec or Isola, such as RO3003 or NY-9220 and many other materials. In addition to core materials, we can press all major HF prepregs such as Ro4450, Gore Speedboard or Taconic Fastrise. |
| End surfaces Various chemical and galvanic gold surfaces and chemical tin and silver surfaces, as well as pure organic protective coatings. Nickel-free surfaces are available, which are particularly important for HF technology. |
| Electroplating and copper plating Aspect ratio of up to 1:12 with 0.15 mm drill diameter 1:15 at 0.3 mm drill diameter Copper in vias in accordance with IPC II, IPC III or customer specific Thanks to advanced electroplating processes, a very uniform distribution of copper is achieved on the panel, which ensures a precise etching tolerance. |
