Turnkey OEM printed pcb assemly manufacturer in China , pcba pcb
High-density multilayer PCBs Immersion gold PCBs Multilayer PCBs Double sided PCBA
Medical PCBA Industrial PCBA New Engery PCBA
Electronic Smart Home Application PCBA Automotive PCBA POS&Financial PCBA
Electronic Contract manufacturing services Electronic products OEM&ODM services
PCB&PCBA EMS&ECM Turnkey Service Electronic Box Building
Grandtop is specialized in custom printed circuit board PCB Assembly and final products assembly service . We have professional team and quality control system. Our long-cooperation with global electric components original manufacturer and agent supported us a reliable supply chain.
Where is the application for our pcb assemblies?
Our Printed pcb assemblies are widely usded in Industrial and Energy, Medical and Healthcare, Automotive, Information and Communication Technology, Werables, comsumer electronics
We perform multiple quality assuring procedures before shipping out any PCB board. These include:
* Visual Inspection
* Flying probe, fixture tool
* Impedance control
* Solder-ability detection
* Digital metallographic microscope
* AOI (Automated Optical Inspection)
PCB Capacity
| Items |
Capability |
| PCB Layers |
1-28 layers |
| PCB material |
FR4, FR5, Aluminium,High Tg FR4, Halogen Free, Isola, Rogers |
| PCB Finished Board Thickness |
0.2mm ~ 7.0mm(8mil-276mil) |
| PCB Copper Thickness |
1/3oz ~ 7oz |
| PCB Max gold plating thickness |
50 microinch |
| PCB Min. Trace Width/Space |
0.075/0.075mm(3/3mil) |
| PCB Min. Finish Holes Size |
0.1mm(4mil) for laser holes; 0.2mm(8mil) for mechanical holes |
| PCB Max.Finshed Size |
600mm x 900mm (23.6" x 35.43" |
| PCB Hole Tolerance |
PTH:±0.076mm(+/-3mil), NTPH:±0.05mm(+/-2mil) |
| PCB Soldermask Color |
Green, White, Black, Red, Yellow, Blue,ect |
| PCB Silkscreen Color |
White, Black, Yellow, Blue |
| PCB Impedance Control |
+/-10% |
| PCB Profiling Punching |
Routing, V-CUT, Chamfer |
| PCB Special Holes |
Blind/Buried holes, Countersunk holes |
| PCB Surface Finishing |
HASL, Lead Free HASL, Immersion tin, Immersion gold, Gold plating, Immersion silver, OSP, Carbon, etc. |
| PCB Certificate |
UL, ISO9001, ROHS, SG |
PCB Assembly Technical requirement:
1) Professional Surface-mounting and Through-hole soldering Technolog
2) Various sizes like 1206,0805,0603 components SMT technology
3) ICT(In Circuit Test),FCT(Functional Circuit Test) technology.
4) PCB Assembly With UL,CE,FCC,Rohs Approval
5) Nitrogen gas reflow soldering technology for SMT.
6) High Standard SMT&Solder Assembly Line
7) High density interconnected board placement technology capacity
PCBA Assembly Capacity
| Items |
Capacity |
| PCB Assembly Min. IC Pitch |
0.30mm(12mil) |
| PCB Assembly Foot Pin |
SO, SOP, SOJ, TSOP, TSSOP, QFP, BGA and U-BGA |
| PCB Assembly Min. Chip Placement |
0201 |
| PCB Assembly Max. PCB Size |
410mm x 600mm(16.2" x 23.6") |
| PCB Assembly Maximum BGA Size |
74mm x 74mm(2.9" x 2.9") |
| PCB Assembly BGA Ball Pitch |
1mm ~ 3mm(4mil ~ 12mil) |
| PCB Assembly BGA Ball Diameter |
0.4mm ~ 1mm(16mil ~ 40mil) |
| PCB Assembly QFP Lead Pitch |
0.38mm ~ 2.54mm(15mil ~ 100mil) |
| PCB Assembly Method |
SMT, DIP, AI,MI |
| PCB Assembly Certification |
ISO9001, ISO13485, IATF16949 |
Our Service
| pcb service |
PCB design, PCB Layout, Printed circuit board manufacturing |
| PCB components |
PCB components advicing, PCB compoments sourcing |
| PCBA |
PCBA samples assembly, pcb with components |
| Testing |
PCBA AOI test, PCBA BGA X-RAY test, PCBA ICT test, PCBA FCT test |
| Conformal coating |
Conforal coarting via machine , and UV oven |
| Box Build |
BOX buld, box assembly |
| Turnkey service |
wire harness, sheet metal, plastic |
Company Information
Grandtop Group is spe 10 years' experience in PCBA contract manufacturing, professionally providing SMT, DIP, MI, AI, PCB assembling, conformal coating, final product assembling, testing, material procurement ,and one stop services such as wire harness, sheetmetal , plastic injection to make up complete product for customers. Our factory has a number of lines of SMT, assembly and testing, well-equipped with brand-newly imported Juki and Samsung SMT machine, full-automatic solder paste printing machine, ten temperature zone reflow oven and wave-soldering oven. Our factory is also equipped with AOI, XRAY, SPI, ICT, full-automatic splitting machine, BGA rework station and conformal coating machine, with air conditioner and dust-free workshop and lead-free manufacturing process. We have passed ISO9001:2015 international quality management system, IATF16949:2016 automotive industry quality management system and ISO13485:2016 medical device quality management system.
PCBA facotry View
Exhibition
Customer Visit
Customers from America and European visit Grandtop form Electronics manufacturing service including BOX build, PCB Manufacturing and pcb assembly
PCBA Packing and Shipping
FAQ
Q1: What files do you use in PCB and assembly Quotation?
A1: Gerber, pcb. Auto CAD + Bill of Material
Q2: How do you make sure the quality?
A2: Our Product is all 100% tested including Flying Probe Test (for sample), E-test (mass) or AOI.
Q3: Can we visit your company?
A3: Of course! Welcome to visit our company, Grandtop is located in Hualun Tech Park, Shenzhen, Guandong province, china.
Q4: What is the lead time?
Q4: It takes 3-5 working days for sample, 7-10 working days for batch production based on files and quantity.
Q5: Will you keep our information and files secret?
A5: Sure! It is our basic principle to keep business secrets to protect our customers' rights and behalf.
Q6. How to work with you?
A6: -Email and send us the PCB layout file, BOM list
- We will provide reply confirmation within 12 hours and reply to the offer within 3-5 days.
- Waiting for your company to confirm the price, order and payment method.
- We will start the production.
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