High Frequency PCB

4 Layer Arlon 25FR (DK3.58; DF0.0035)+FR4 S1000-2M Hybrid High Frequency PCB

Built as a 4-layer stack on Arlon 25FR, this board leaves the line at 1.6 mm thickness under OSP over green solder mask and white legend. The demanding part of this build is a laminate specified at Dk 3.58 and Df 0.0035, copper geometry held to 3.5 mil line width and 5.0 mil spacing, mechanical holes from 0.2 mm. Every panel is released on 100% AOI, ICT and FCT testing to IPC-A-610 E Class II, holding outline by Rout / V-cut / Bridge / Stamp Hole. Typical end use is electronic device.

  • Layers4 Layers (Max 64 Layers)
  • Base materialArlon 25FR
  • Finished thickness1.6 mm (Max 8mm)
  • Surface finishOSP
  • Min. line width / spacing3.5 mil (Min 2mil) / 5.0 mil (Min 2mil)

Quotation within 6 hours. Gerber, PowerPCB, CAD, AutoCAD, OrCAD, P-CAD, CAM-350 and CAM2000 files accepted.

What matters on this build

4-layer construction, scalable to 64 layers

This part is 4-layer; the same presses run 1 to 64 layers, so a stack-up revision does not force a supplier change.

Arlon 25FR laminate

Built on Arlon 25FR — RF laminate — drawn from over 120 laminate types held in the warehouse, from KB and ITEQ through Rogers, Isola and Panasonic.

3.5 mil / 5.0 mil line width and spacing

Etched to 3.5 mil width and 5.0 mil spacing here; the process floor is 2/2 mil inner at 1/3 oz copper, with ±10% accuracy on impedance layers.

OSP surface finish

Finished with OSP. ENIG 1–3 μin, ENEPIG, hard gold to 3.0 μm, immersion silver, immersion tin, OSP and lead-free HASL are all in-house.

Hole sizes from 0.2 mm mechanical

Drilling covers 0.15 mm mechanical and 0.076 mm laser holes, backdrill to ±0.1 mm and depth control to 0.05 mm.

Full specification as manufactured

These are the parameters this part was quoted, tooled and shipped against.

ParameterValue
PCB TypeHigh Frequency PCB
Number of Layers4 Layers (Max 64 Layers)
Finished Thickness1.6 mm (Max 8mm)
Base MaterialArlon 25FR
Copper Thickness1 oz
Min. Mechanical Hole0.2 mm (Min 0.1mm)
Min. Line Width3.5 mil (Min 2mil)
Min. Line Spacing5.0 mil (Min 2mil)
Surface FinishingOSP
Solder MaskGreen
Silk ScreenWhite
Thickness Tolerance±10%
Impedance Control Accuracy±10% (min±5%)
Testing Service100% AOI ICT FCT Testing
Special ProcessesNo
PCB StandardIPC-A-610 E Class II
Brand NamePEAK PCB
Place of OriginShenzhen, Guangdong, China
Packaging InnerVacuum Packing/ Anti-Static Package
Packaging OuterExport Carton/ Customizable
PortShenzhen,Hongkong
Supply AbilitySample and Mass Production
Finished Inner Copper ThicknessHoz (Max 14oz)
Finished Outer Copper Thickness1oz (Max 14oz)
Outline ProfileRout/ V-cut/ Bridge/ Stamp Hole
ApplicationElectronic Device
Acceptable File FormatGerber file, Powerpcb, CAD, AUTOCAD, ORCAD, P-CAD, CAM-350, CAM2000

Questions engineers ask about this board

Can this design be scaled beyond 4 layers?

Yes. This part is quoted at 4 layers and the plant fabricates 1 to 64 layers, including sequential-lamination HDI up to 5+N(N+M)+5.

Can a different laminate be substituted for Arlon 25FR?

It can. Arlon 25FR is what this part is built on, but material is a design input — Rogers, Arlon, Taconic, Isola, Nelco, Panasonic, TUC, ITEQ, SYTech, Ventec and KB grades are all stocked, and customer-supplied stock is accepted.

Is OSP the only surface finish offered on this board?

No. OSP is specified here; ENIG at 1–3 μin gold, ENEPIG, hard gold to 3.0 μm, immersion silver, immersion tin, OSP and lead-free HASL are alternatives, subject to panel size limits on HASL.

What files do you need to quote this part?

Gerber RS-274X plus a drill file and a stack-up or impedance note. PowerPCB, CAD, AutoCAD, OrCAD, P-CAD, CAM-350 and CAM2000 formats are also accepted. Quotation normally comes back within 6 hours.

Other builds in High Frequency PCB

Get this board quoted

Send the part number or your own Gerber set. An engineer replies with price, lead time and any DFM comments — usually inside 6 hours.