China Circuit Manufacturer Conformal Coating Fr4 94Vo Pcb

1-999 Pieces
>=1000 Pieces
Min. Order
1 Piece
Quick Quotation
Company Information

Shenzhen Tianditong Electronics Co., Ltd.

CN Manufacturer, Trading Company
Response Time
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3 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Port: shenzhen
Payment Terms: T/T,Western Union
Supply Ability: 500000 Piece/Pieces per Week
Place of Origin: China
Brand Name: TDT PCBA
Model Number: TDT PCBA 331
Base Material: FR4/Halogen free/ Rogers/Aluminum/Hybird
Copper Thickness: 0.3oz-12OZ
Board Thickness: 0.15mm-10mm
Min. Hole Size: 0.1mm
Min. Line Width: 0.075mm
Min. Line Spacing: 0.075mm
Surface Finishing: ENIG/OSP/HASL
MAX Layer Count: 16 layer
MAX Board Size: 2000 *610mm
MAX Board Thickness: 10mm
Min PTH Hole Size: 0.15mm
Outline Tolerance: &plusmn;0.125mm
Min PTH PAD Size: 0.40mm
Drill Position Accuracy: &plusmn;0.05mm
Impedance Control: &plusmn;10%
Bow and Twist: 0.75%
Max Surface Cu Thickness: 12 oz
Packaging Detail: 1.Inner: PCB: Vacuum Packing PCBA: ESD Packing 2.Outer: Standard export carton; 3.Customized package.
company info

We are  a leading electronic contract manufacturer providing PCB Assembly Services. Continuous flow SMT production lines, BGA, micro BGA and mixed technology, RoHS compliant electronic assembly, complete thru-hole assembly, 100% optical inspections including solder joints, functional and custom designed testing, flying probe tester for speed, accuracy, reliability. Protective conformal coating, ESS thermal testing, BGA repair/rework station Electromechanical Assembly, Box build/system integration Wire Harness & Cable Assembly


We are up-to-date equipment covering SMT/DIP conveyor assembly lines and lead free process is the foundation to production throughout. Our strong organized management team is responsible to diversified customers requirements. Procurement department works with Production Control to make supply chain to ensure production lines smoothrunning


  More importantly, our quality control starts from approved vendors list inspection components, production process, to finished boards to meet different industrial standards to give consistent quality standards at their level


One-stop Service

We are capable of providing full turn-key and partial turn-key printed circuit board assembly services. For full turn-key, we take care of the entire process, including preparation of Printed Circuit Boards, procurement of components, online order tracking, continuous monitoring of quality and final assembly. Whereas for partial turn-key, the customer can provide the PCBs and certain components, and the remaining parts will be handled by us


We have  adopted a variety of management procedures and ways to ensure the product delivery meets the customer's expectations through the whole product realization from the Suppliers selection, adequate assessment of WIP and outgoing scrutiny to service the customer. Few examples can be considered in this regards:


Assessment & Inspection of Possible Suppliers:

Our ' experienced professionals assess the Suppliers potential to ensure a portfolio of best in class suppliers is available before final approval. We constantly review and then rank every supplier periodically to ensure a guaranteed best quality materials are provided as per prescribed standards of our' requirements. Furthermore, We provide continuous feedback on their performance and trains them on improving the quality and environment management as per the systems of IATF16949.


Preliminary Agreement Review:

We carefully assess and check customer's requirements before proceeding with an acceptance of order so as to be confident that we are capable enough to meet the expected specifications, delivery and other technical and business requisites


Formation, Analysis and Control Of Manufacturing Instruction:

We, on receipt of customer's design data and related documentation will proceed with thorough review of all the requirements and transformation of design datum into manufacturing datum via CAM. At the end, a Manufacturing Instructions (MI) comprising of manufacturing datum is devised in accordance to our prescribed manufacturing guidelines and technical standards. MI should be verified on formulation by independent engineers and get properly checked and authenticated by QA Engineers before its issuance. The first article inspection will corroborate the drilling and routing datum ahead of issuance. In a word, we had developed itself in a manner to guarantee that the manufacturing document is absolutely error free and legitimate.


Quality Control of Incoming Materials:

We adhere to stringent process of scrutinizing all incoming materials prior to moving them to the stockroom. In addition, we follow prescribed guidelines and working directives to manage all incoming materials. Additionally, we possesses advanced technology inspection equipment and tools to manage materials to ensure that they are utilized by first-in-first out. The enhanced technology will issue a warning when a particular material gets close to its expiration date. According to its policies, we will utilize the materials before expiration or test them before use


Process Controls of Fabrication:

We control our complete production process by adoption of various techniques such as Right manufacturing instruction (MI), entire equipment management and maintenance, stringent monitoring of WIP and its inspection along with prescribed working instructions. We strongly believe in satisfying all the customer requirements in semi-products and final products; hence, we use specific inspection equipment including, the AOI inspection system, well-defined WIP inspection instructions, and a control plan


Final Control and Examination:

Our team ensures that all PCBs after clearance from relative physical tests are passed through the open and short test along with visual inspection. We possesses multi-faceted testing equipment comprising of AOI Testing, X-ray inspection, and In-Circuit Testing for finished circuit board assembly.


Outgoing Inspection and Approval:

We have invested in setting up FQA, a special quality assurance testing function that ensures the products meet the specific customer demands by assessing their requirements via sampling. They must be approved before they are routed to the packaging department. Prior to final shipment, FQA ensures 100% audit of every shipment for the fabrication, component numbering series, customer's part number, quantity, location details and packing list etc


We strive to meet all customer requirements through its committed, professional, customer service department. We always work hard to provide timely feedback for customers queries and to proactively resolve their problems. In fact, we also work to solve most of the related problems on a customer's site. We invest in conducting periodical surveys to understand its customer needs and provide the best solutions. Accordingly, we make customer service improvements and attempts to develop products that fulfill the specific needs of its customers.


We provide printed circuit board manufacturing services in addition to PCB assembly with superior quality and a cost-effective price. We are capable of meeting the ever-increasing demands of customers, from fabricating a single board, to a small quantity of prototypes, to a high-volume production requirement by using all types of materials and modern technologies. We are capable of manufacturing single, double-sided, and multi-layer PCBs to the customer's specifications.











PCB leadtime

Sample PCB Producing  Leadtime

PCB Layer Leadtime

Lead Time (Working days,ex-factory)

Urgent (hour)

Normal (day) 

1 ,2L






6 ,8L



10 L and up 

To be determined based on gerber file 

The above lead time is based on:

1.Matrial Available

2.All Engineering issues comfirmed

PCB Mass Producing  Leadtime 

 PCB Layer Leadtime       

 Lead Time (Working days,ex-factory)             
Urgent (day) Normal (day) 

1 ,2L




7--9  12--14
 6 ,8L 12--14 15--18
10 L and up  To be determined based on gerber file  

The above lead time is based on:

 1.Matrial Available 
 2.All Engineering issues comfirmed 
PCB Assembly

PCB Assembly  Capacity


Type of Assembly

THD (Thru-Hole Device), SMT (Surface-Mount Technology), SMT & THD mixed, Double-sided SMT and THD assembly.

Solder Type

Water Soluble Solder Paste, Leaded process and Lead-Free (RoHS)


Passives parts, smallest size 01005

BGA, uBGA, QFN, POP, and Leadless chips

Fine Pitch to 0.8Mils;

BGA Repair and Reball; Part Removal and Replacement

Connectors and terminals

Bare Board Size

Smallest:0.25’’x 0.25’’ (6.35mm x 6.35mm)

Largest: 21.02’’ x 20.07’’ (534mm x 510mm)

Min. IC Pitch

0.012’’ (0.3mm)

 QFN Lead Pitch 0.012’’ (0.3mm)
Max. BGA size2.90’’ x 2.90’’ (74mm x 74mm)

MiTestingn. BGA size

0.012’’ (0.3mm)

Type of Service

Turn-key, partial turn-key or consignment



X-ray Inspection

AOI (Automated Optical Inspection)

ICT (In-Circuit Test)/Functional Testing

Turnaround Time

 Same day service to 15 days service

Component packaging

 Reels, cut tape, Tube and tray, Loose parts and bulk
why chose us

Cost Reduction:

This is the most important benefit of your long term relationship with us. After learning your specific needs, with the Shenzhen strong supply chain support ,we will quickly work out a solution to meet your expenses and cost reduction targets. They may be achieved by providing lower cost PCB, PCB assembly or by our reengineering or designing services to meet your expectations.


DFM  Analysis:

Because we are capable of handling DFM analysis, PCB fabrication, PCB assembly, and components  sourcing under one roof, which can avoid mistake before manufacturing .



Saving Your Time:

We save your time transition from one phase of a project to another. For instance, from layout-to-fab, fab-to-assembly, parts procurement-to-assembly. We're capable of handling everything in one streamlined process, all services under one roof, so you get the benefit of working with us by one time line versus 3 or 4 companies and 3 or 4 time lines.




We react quickly to your changing needs. Our working time and style is flexible to meet your variable needs. To us, Dedication to the highest level of customer service is our main mission.


You Can Focus On Your Design and Market

You can rely on us to handle all aspects of your printed circuit assembly projects. We are able to handle your pcb layout, circuit board fabrication, pcb assembly , parts sourcing and final assembly , so you can focus on your core competencies like research ,development  and marketing.

 3.jpg team.jpg


1: On turn-key PCBA project, what does JPT  do about part crossing or substitutions?

First of all, we check your Bill of Materials (BOM), and send you BOM with the brand we chose for each component and also we will mark the components in different color to tell youwhich components we chose the substitutions. We will give you advice on how to reduce BOM costs by parts crossing  or substitutions, but all part changes are your own final decision.

2: How do you order components for Turn-Key orders?

We usually order 3‰ or 5 spare parts (depending on size and cost) to accomplish your order without missing parts or shortages due to Production Loss. If we encounter any Issues With BOM Components, such as a large minimum order for a certain part, we will communicate with you to find the best solution.

3: What is the lead time on a turn-key order?

The overall project Lead Time is the sum Parts Procurement lead time and PCB Assembly lead time. However, we try to shorten the time line by streamlining our PCB Assembly Process. For instance, once we receive your Gerber Files for PCB Fabrication and BOM for PCB Assembly, we will start to prepare the stencil for your board and complete the fabrication concurrently with the parts procurement process.

4: Is there a minimum order size for turn-key orders?

No. We have no restrictions on your order size; however, larger orders are more cost effective. We can work with you to find a good solution for your specific needs in cost reduction.

5: What happens to the leftover components on Turn-Key orders?

We can keep your leftover parts in our inventory for your next order if you think these parts will be used again; otherwise, we can ship spare parts with your completed order so you have access to them for troubleshooting and repairs.

6: What do I need to send for a turn-key order?

  • Bill of Materials, complete information in excel format. This document should include manufacturer names, part numbers, Reference Designators, component descriptions, and quantities.
  • Gerber Files
  • Centroid Data (AKA Pick and Place or XY-Coordinate Data)
  • Other requirements or assembly instructions if applicable

What is Centroid data?

Centroid data (AI, Pick-and-place or XY data) - This is the machine file, which should include: X, Y, Side of Board (Top or Bottom), and Reference Designator. It is used by our Automated PCB Assembly machines to determine where each part should be located on the board.

7: Can you handle lead-free builds?

Yes, we have 12  lines for Lead-Free PCB Assembly.

8: Do you X-ray BGAs?

Yes. We also use X-Ray Inspection for any lead-less IC pins and other parts that have leads which cannot be seen with a microscope.


9: How do I need to supply my components?

  • Each bag, tray, etc. should be clearly marked with the part number, reference designators that is listed on your bill of materials.
  • Components which are sensitive to moisture or static must be packaged in compliance with their storage requirement.
  • SMT components provided must be sealed tightly or taped firmly. Sending them loose may cause components damage and the production delay.



Packaging & Shipping