4-Layer Number of Layers substrate fr4 pcb

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US $100.00 / Square Meter |1 Square Meter (Min. Order)
- + Square Meters available
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
Base Material:
Copper Thickness:
Board Thickness:
Min. Hole Size:
Min. Line Width:
Min. Line Spacing:
Surface Finishing:
PCB test:
Flying probo test(default) / Fixture test
PCB acceptance standard:
IPC class 2
PCB assembly:
Through holes, SMT, BGA
PCBA test:
Visual inspection(default), AOI, FCT, X-RAY


4-Layer Number of Layers substrate fr4 pcb
1. PCB production
2. Component parts source
3. PCBA assembly
4. Full test


Company Information
4-Layer Number of Layers substrate fr4 pcb

Wells is a professional manufacturer(factory) which founded in 2000 with14 years’ experiences in PCB&PCBA field, specially dedicate to automotive, medical, household appliances and telecommunication PCBA and electronic products finished assembly.

Our Services

Main service:

1. PCB Assembly on SMT and DIP

2. SMD package, Chip-on-board and Flip Chip assembly technique

3. 0201 chip, Micro BGA, u-BGA, QFN and LGA assembly

4. Enclosure design and plastic injection molding

5. PCBA clone/change board

6. PCB design/schematic drawing

7. IC decryption/chip reverse design

8. Prototype production and debugging

9. Components sourcing and purchasing

10. Tests(X-ray, ICT, AOI and Functional tests)


Testing Service

Testing Service

Wells offers a full range of testing services. Including:


Fuction Testing 

In Circuit Testing

X-Ray For BGA Testing 

3D Paste Thickness Test


Each board is carefully examined by our dedicated inspection team using AOI and high magnification viewers. 

Using our X-Ray machine, we test PCBs to component level and all wiring is fully inspected and tested. 

Flash testing and earth bonding tests can also be undertaken where required.


PCB and FPC capacity

PCB  Capacity:

                 Layer1 to 28 layers
             Material typeFR-4, CEM-1, CEM-3, High TG, FR4 Halogen Free, Rogers
          Board thickness0.21mm to 7.0mm
         Copper thickness0.5 OZ to 7.0 OZ
   Copper thickness in hole>25.0 um (>1mil)
                    SizeMax. Board Size: 23" × 25" (580mm×900mm)
Min. Drilled Hole Size: 3mil (0.075mm)
Min. Line Width: 3mil (0.075mm)
Min. Line Spacing: 3mil (0.075mm)
         Surface finishingHASL / HASL lead free, HAL, Chemical tin, Chemical Gold, Immersion Silver/Gold, OSP, Gold plating
               ToleranceShape tolerance: ±0.13mm
Hole tolerance: PTH: ±0.076mm             NPTH: ±0.05mm
               CertificateUL, ROHS, SGS, ISO 9001, ISO 14001
     Special requirementsBuried and blind vias+controlled impedance +BGA
                 ProfilingPunching, Routing, V-CUT, Beveling
Provides OEM services to all sorts of printed circuit board assembly as well as electronic encased products.

FPC Capacity:

                    TypesSingle-sided, Double-sided, Multi-layers (max 6 layers) and
Flex-Rigid PCB
            Surface FinishingHASL(LF), Gold plating, Electroless nickel immersion gold,Immersion Tin, OSP(Entek)
               Base MaterialPolyimide(Kapton), Polyester(PET), FR4
Soldering Thermal Resistance300degree/10 seconds
          Performance Test100% electrical and electricity performance test




PCBA capacity

PCBA  capacity

               Min. IC Pitch0.30mm(12mil)
                     Foot PinSO, SOP, SOJ, TSOP, TSSOP, QFP, BGA and U-BGA
        Min. Chip Placement1005
              Max. PCB Size410mm x 600mm(16.2" x 23.6")
          Min. PCB Thickness0.35mm(13.8mil)
          Maximum BGA Size74mm x 74mm(2.9" x 2.9")
             BGA Ball Pitch1mm ~ 3mm(4mil ~ 12mil)
           BGA Ball Diameter0.4mm ~ 1mm(16mil ~ 40mil)
             QFP Lead Pitch0.38mm ~ 2.54mm(15mil ~ 100mil)
                   PackageAnti-static Bubble Bag & Carton


Why Choose Us?

Why Choose Us?

 We are China leading PCB & PCB assembly manufacturer
 Alibaba Assessed Gold Supplier for 5 years
 Inspected by the Inspection Institution of Bureau Veritas Certification: UL,Rohs,ISO9001
 4 times 100% QC inspection before Shipping.

 Best Quality & Best Service with Competitive price.


Packaging & Shipping

Packing and Shipping Terms

Packing:  Bubble Anti-static Bag, Anti-static Bag, Double Flute Carton, Inner Pads (Top & Bottom), Inner Cards, Pallet, Pallet Wrapper


Shipping: Wells has our own forwarder with long term cooperation, best transportation cost save your money  and support you the best service.