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Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication

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The board quality is very good! We have been WonDa’s customer for more than 4 years. Your good service and quality is too good.

—— Jay

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Double Sided PCB

  • High Precision Double Sided PCB suppliers
  • High Precision Double Sided PCB suppliers




Double sided circuit board means has a double-sided copper, and metallized holes, that is double-sided copper, and copper are holes inside

Both sides have double wiring board, but to use the wire on both sides. Both sides must be in the room with appropriate electrical connections. "Bridge" between this circuit called vias. Guide hole in the PCB, metal filled or coated with holes, which can be connected to the conductors on both sides. Because dual-panel area twice as big than the single panel, double panel to solve the single-panel wiring staggered because of difficulty (can be turned to the other side of the hole), it is more suitable for use in more complex than single-panel circuit.




Compared with single-board: wiring convenient, simple, labor-intensive wiring smaller, shorter line length.



Double Circuit Board Design Steps


     1. Prepare circuit schematics

     2. Create a new file and loaded PCB component package library

     3, planning board

     4, into the network table and components

     5, automatic layout components

     6, layout adjustment

     7, the network density analysis

     8, wiring rules set

     9, automatic routing

     10, manually adjust the wiring


Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication

Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication
Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication

Large Image :  Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication

Product Details:

Place of Origin: shen zhen ,china
Brand Name: WonDa
Certification: UL,SGS,ROHS,ISO

Payment & Shipping Terms:

Payment Terms: L/C,T/T,Paypal
Detailed Product Description
High Light:

pcb printed circuit boards


double sided printed circuit board

Custom FR-4 Red Solder Mask Double Side PCB Board 4 Layers Fabrication


4 Layers PCB
1.20mm Finish Thickness
1OZ finish Copper
Lead Free Hasl finish
Red Solder Mask
6/6 mil Min track/spacing
0.25mm hole size
V-Cut outline
Brand:China PCB Fabrication


PCB Technical Capacity


1. Files: Gerber, Protel, Powerpcb, Autocad, Orcad, etc


2. Material: FR-4, Hi-Tg FR-4,  Lead free Materials (RoHS Compliant) , CEM-3, CEM-1, 

Aluminium, High frequency Material (Rogers, Teflon, Taconic)


3. Layer No.: 1 - 28 Layers


4. Board thickness: 0.0075"(0.2mm)-0.125"(3.2mm) 


5. Board Thickness: Tolerance: ±10%


6. Copper thickness: 0.5OZ - 4OZ


7. Impedance Control: ±10%


8. Warpage: 0.075%-1.5%


9. Peelable: 0.012"(0.3mm)-0.02’(0.5mm)


10. Min Trace Width (a): 0.005"(0.125mm)


11. Min Space Width (b): 0.005"(0.125mm)


12. Min Annular Ring: 0.005"(0.125mm)


13. SMD Pitch (a): 0.012"(0.3mm)


14. pcb with green solder mask and LF-FREE surface finishing BGA Pitch (b): 0.027"(0.675mm)


15. Regesiter tolerance: 0.05mm


16. Min Solder Mask Dam (a): 0.005"(0.125mm)


17. Soldermask Clearance (b): 0.005"(0.125mm)


18. Min SMT Pad spacing (c): 0.004"(0.1mm)


19. Solder Mask Thickness: 0.0007"(0.018mm)


20. Hole size: 0.01"(0.25mm)-- 0.257"(6.5mm)


21. Hole Size Tolerance: ±0.003"(±0.0762mm)


22. Aspect Ratio: 6:01:00


23. Hole Registration: 0.004"(0.1mm)


24. HASL: 2.5um


25. Lead free HASL: 2.5um


26. Immersion Gold: Nickel :3-7um  Au:1-3u''


27. OSP: 0.2-0.5um


28. Panel Outline Tolerance: ±0.004''(±0.1mm)


29. Beveling: 30°45°


30. V-cut: 15° 30° 45° 60°


31. Surface finish: HAL, HASL Lead Free, Immersion gold, Gold plating, Gold finger, immersion 

    silver, immersion Tin, OSP, Carbon ink, 


32. Certificate : ROHS  ISO9001:2000  TS16949  SGS  UL


33. Special requirements: Buried and blind vias, Impedance control, via plug, BGA soldering 

     and gold finger.

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