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CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold

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Good quality Flexible PCB Board
Good quality Flexible PCB Board
Customer Reviews
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

Cooperation is very satisfactory and the Company of the past few years, we are very willing to continue long-term cooperation.

—— Rob

The board quality is very good! I’m surprised with the low cost and quick delivery. It is totally out of my expectation. I will definitely come back.

—— Victoria, Australia

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PCB Board Assembly

  • High Precision PCB Board Assembly suppliers
  • High Precision PCB Board Assembly suppliers






PCB Assembly is a process that requires knowledge not just of PCB components and assembly but also of printed circuit board design, PCB fabrication and a strong understanding of the final product. Circuit board assembly is just one piece of the puzzle to delivering the perfect product the first time.
San Francisco Circuits is a one-stop solution for all circuit board services so we are often entrenched with the PCB production process from design to assembly. Through our strong network of well-proven circuit assembly and manufacturing partners, we can provide the most advanced and nearly limitless capabilities for your prototype or production PCB application. Save yourself the trouble that comes with the procurement process and dealing with multiple components vendors. Our experts will find you the best parts for your final product.


PCB Assembly Services:

Quick-turn prototype assembly
Turn-key assembly
Partial turn-key assembly
Consignment assembly
RoHS compliant lead-free assembly
Non-RoHS assembly

Conformal coating
Final box-build and packaging



PCB Assembly Process

Drilling-----Exposure-----Plating-----Etaching & Stripping-----Punching-----Electrical Testing-----SMT-----Wave Soldering-----Assembling-----ICT-----Function Testing-----Temperature & Humidity Testing


Testing Services

X-Ray (2-D and 3-D)
BGA X-Ray Inspection
AOI Testing (Automated Optical Inspection)
ICT Testing (In-Circuit Testing)
Functional Testing (at the board & system level)
Flying Probe



Surface Mount Technology / Parts (SMT Assembly)
Through-Hole Device / Parts (THD)
Mixed Parts: SMT & THD assembly
BGA / Micro BGA / uBGA
QFN, POP & lead-less chips
2800 pin-count BGA
0201 / 1005 passive components
0.3 / 0.4 Pitch
PoP Package
Flip-chip under-filled CCGA
BGA Interposer / Stack-up
and more…




CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold

CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold
CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold

Large Image :  CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold

Product Details:

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

Payment & Shipping Terms:

Minimum Order Quantity: None
Price: Negotiable
Packaging Details: Vacuum bag + Outer carton
Delivery Time: 5-15 days
Payment Terms: L/C,T/T,Paypal
Supply Ability: 10000 Sq.meter/month
Detailed Product Description
Base Material: FR-4,FR2.Taconic,Rogers, CEM-1 CEM-3,ceramic,crockery,Metal Copper Thickness: 1/2 Oz Min; 12 Oz Max
Board Thickness: 0.2mm-6mm(8mil-126mil) Min. Hole Size: 0.1mm(4mil)
Min. Line Width: 0.075mm(3mil) Min. Line Spacing: 0.1mm(4mil)
Surface Finishing: HASL / HASL Lead Free, Chemical Tin, Chemical Gold, Immersion Gold Insulation Resistance: 10Kohm-20Mohm
Test Voltage: 10-300V Warp & Twist: 0.7%
Outline Tolerance: +/-0.125mm(5mil) CNC Routing +/-0.15mm(6mil) By Punching Conductor Width(W): +/-20% Of Original Artwork PTH L +/-0.075mm(3mil)
Hole Diameter(H) PTHL: +/-0.075mm(3mil) Non-PTH L +/-0.05mm(2mil)
High Light:

printed circuit board assembly


smt pcb assembly

CEM-1 CEM-3 ceramic PCB board Assembly Service and PCBA design with Chemical tin , Gold



PCB board Assembly Service and PCBA design
2.Soon respond&Fast delivery


PCB board Assembly Service and PCBA design                 

1.PCB Layout,PCB design

2.Make high difficulty PCB(1-38 layers boards)

3.offer all Electric components


5.PCB delivery time:5-10 days; PCBA delivery time:20-25 days


We are professional  manufacturer in various PCB and PCBA with many years experience,We can provide a reasonable price with high quality products.


We can provide a full set of service.such as below:


* 1. PCB layout, PCB design

* 2: Make high difficulty PCB(1 to 38 layers)

* 3: Provide all Electronic component

* 4: PCB assembly

* 5: Write programs for clients

* 6: PCBA/finished product Test. etc.


PCB Specification detail


  Item Specification
1 Numbr of Layer 1-38Layers
2 Material FR-4,FR2.Taconic,Rogers, CEM-1 CEM-3,ceramic , crockery Metal-backed Laminate
3 Finish Board Thickness 0.2mm-6.00 mm(8mil-126mil)
4 Minimun Core Thickness 0.075mm(3mil)
5 Copper Thickness 1/2 oz min;12 oz max
6 Min.Trace Width & Line Spacing 0.075mm/0.1mm(3mil/4mil)
7 Min.Hole Diameter for CNC Driling 0.1mm(4mil)
8 Min.Hole Diameter for punching 0.9mm(35mil)
9 Biggest panel size 610mm*508mm
10 Hole Positon +/-0.075mm(3mil) CNC Driling
11 Conductor Width(W) 0.05mm(2mil)or;+/-20% of original artwork
12 Hole Diameter(H) PTH L:+/-0.075mm(3mil);Non-PTH L:+/-0.05mm(2mil)
13 Outline Tolerance 0.125mm(5mil) CNC Routing;+/-0.15mm(6mil) by Punching
14 Warp & Twist 0.70%
15 Insulation Resistance 10Kohm-20Mohm
16 Conductivity <50ohm
17 Test Voltage 10-300V
18 Panel Size 110×100mm(min);660×600mm(max)
19 Layer-layer misregistration 4 layers:0.15mm(6mil)max;6 layers:0.25mm(10mil)max
20 Min.spacing between hole edge to circuity pqttern of an inner layer 0.25mm(10mil)
21 Min.spacing between board oulineto circuitry pattern of an inner layer 0.25mm(10mil)
22 Board thickness tolerance 4 layers:+/-0.13mm(5mil);6 layers:+/-0.15mm(6mil)
23 Impedance Control +/-10%
24 Different Impendance +-/10%


Details for PCB Assembly



1).Professional surface mounting and through hole soldering technology;

2).Various sizes,like 1206,0805,0603 components SMT  technology;

3).ICT(In Circuit Test),FCT(Functional Circuit Test)  technology;

4).Nitrogen gas reflow soldering  technology for SMT;

5).High standard SMT&Solder Assembly line;

6).High density interconnected board placement technology capacity.


Quote requirement


1).The detailed files(Gerber files,specification and  BOM);

2).Clear pictures of PCBA or samples for us;

3).PCBA Test method. 


Contact Details
PCB Board Online Marketplace

Contact Person: Miss. aaa

Tel: 86 755 8546321

Fax: 86-10-66557788-2345

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