About Lead Circuit
1. What does Lead Circuits do?
A: Lead Circuit focus on printed circuit board fabrication for more than 15 years which is mainly offer 1-16layers board with our own plant for more than 45000sqm.
2. What market do you target for sales?
A: We manufactured market is 50% domestic and 50% overseas market.
3. What certifications your company got?
A: We have been certified to ISO9001:2015, ISO14001, TS16949 and UL certification (UL No: E501192) and complied with the RoHs & WEEE requirements for lead free products through SGS test
4. Will Lead Circuit sign a non-disclosure and/or non-compete agreements?
A: Yes, It's in Lead Circuit's best interest to protect the interests of our customers.
5. What's your payment terms?
A: For the new customers in the initial period of cooperation, basically we use the terms of T/T in advance or COD, for qualified business accounts we use credit payment terms such as net 30 days.
6. Can you offer free samples to check and evaluate?
A: Yes, Normally we will charge the samples cost firstly, and return to you when the mass order release.
7. How can you ensure your quality is top?
A: We have very strict quality system and a lot of inspect machine through our produce process. For more details you can review how to guarantee the quality of printed circuit board(PCB) when manufactured? How we to inspect it?
8. Does your company machine are advanced?
A: Yes, we have advanced machine all of them are auto equipment, such as Robot arm, Auto test machine, Auto plating line, VCP line and so on.
Orders & Quotes Related
1. What information is required for a quote?
A: Please use Gerber data, PCB fabrication notes and array drawing data when you request a quote. This will give you an accurate quote in a short period of time.
2. How long is my quote valid?
A: Your quote is valid for 30 days from the date you receive it via email. If you want to confirm the quote is still valid after the expiry date, please contact your sales representative.
3. What inspection reports are produced to document that items produced comply with customer specifications?
A: We'll ship micro section & COC(Certificate of Quality Compliance) report together with PCB boards.
4. Do you check my artwork?
A: Yes, We check your artwork based on Gerber files or AutoCAD files. We could provide some suggestions to you with free of charge if you need, on our design rules such as increasing clearance, trace width or pad size to decrease cost or make your ordered boards within our manufacturing capability. But it is still up to you to make decisions.
5. What format files can you read?
A: We prefer to receive Gerber files with RS-274-X format or DWG/DXF files, but if you can not output in these formats, please send your design data and our engineers will deal with them.
6. What do you do with my NRE TOOLING & ENG cost?
A:NRE TOOLING, is non-recurring charge for setup cost and E-tester for volume production, which no need to pay for re-orders if without data change in one year.
ENG COST, it means engineering cost for small volume less than 3sqm, which is recurring cost with re-orders.
8. How do you ship the boards, what carrier do you use?
A: Normally for samples or small quantity our shipment terms based on DDU by using DHL, FedEx, UPS and TNT. For mass quantity We also do other shipment terms which required by customers, such as FCA (SHENZHEN).
9. Do you have Minimum Order Requirement (MOQ)?
A: No, we don't have MOQ, but we have good advantage for the mass quantity.
10. How quickly do you respond to a PCB quote request?
A: Normally we will respond to a PCB quote request in 2 hours during our working time, however, complex PCBs may need more time for an accurate quote. In this time, we will assess your data and specification for manufacturing suitability and evaluate the availability of non-standard materials.
11. What lead times can you offer?
A: Most orders with small up to middle volume PCBs could be delivered 8 to 15 working days, depending on your requirements and the complexity of the order and volume ordered.
12. What can I do if I receive unsatisfied PCB?
A: Please refer to following steps if you receive unsatisfied PCB
1. Contact us about the defect within one week upon receiving the parts
2. Send a digital photo and description of the defect.
3. Our QA engineer will review your request and if the parts are non-conforming per customer specifications or acceptance standard of IPC-A-600 Class2, we'll process your request.
4. Upon your approval, we'll address the problem and re-run your order based on the original order request. There will be no additional charge.
5. If you request for a refund, we will refund 100% of your order amount.
PCB Technical Questions
1. Why should circuit boards be electrically tested?
A: Electrical test is very important after the processes of PCB manufacturing, because this is the only way for any PCB manufacturer to ensure the PCB board shipped have zero shorts or opens. Visual inspection can never be 100% effective. Especially, if the defect is under the solder mask, electrical test is the only way to catch it.
2. What should be shown in drill file: Drill diameter or finished hole diameter?
A: Please provide finished hole diameter in your drill files.
3. What is your standard specification PCB?
A: The following is used for our standard specification boards: FR4, 1.6mm thickness, 1oz copper weight, white silkscreen, green solder mask, HASL/HAL(Lead free) finished.
4. What solder mask do you use for PCBs?
A: We use Liquid Photo-Imageable (LPI) solder mask for the standard process of PCBs.
5. Are there any other color options for the solder mask?
A: Although green is the standard color we use for PCB prototype, we can also provide the following colors: red, white, blue, black, yellow, etc.
6. How to reduce the cost of circuit boards?
A: The PCB price is related with many factors, such as layer counts, raw material, board thickness, copper thickness, surface treatment, min hole size, total hole quantity, min trace width/spacing etc.
If you want to get the lower price, please design your circuit board as simple as possible.
7. To what acceptability standards do you build?
A: All our printed circuit boards are built based on the acceptance standard of IPC-A-600 Class2.
For special requirements, we can also produce PCB comply with IPC Class3.
8. Can you manufacture my PCBs from a picture file?
A: No, We can not accept BMP, GIF, TIFF or JPG pictures as the manufacturing file as these formats are not good for PCB manufacturing. But you can use these files to request a quotation.