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JingHongYi PCB (HK) Co., Limited

PCB Assembly FAQ
As one of the most cost-effective and high quality PCB fabricator and PCBA service provider. We are answering questions from around the world on the daily basis concerning their PCB and assembly business. We aggregate these questions for our new customers, A total of 19 to know about our product and service.

Q1: What do you specialize in?

JHYPCB is China Shenzhen-based PCB manufacture and PCB Assembly manufacturer. JHYPCB strives to be the easiest manufacturer for engineers to work with. JHYPCB – PCB Prototype the Easy Way! We specialize in Quickturn PCB Assembly and Prototype PCB Assembly.

Q2: Do you accept to assemble the boards that are not made by JHYPCB?

We offer the PCB fabrication, parts sourcing and PCB assembly in a continuous and smooth manner to save our customer's time and money.

If you have your own PCB products, you just need our PCB assembley services, and we can still be perfect to do it, you just need to send us your board.

Q3: Do you provide prototype assembly (low quantity)?

Yes. JHYPCB has no minimum order quantity requirements and can assemble even one board. For more information please check our Prototype Assembly page.

Q4: What does your quoted price include?

We will provide you pricing for PCB assembly. The PCB assembly pricing includes tooling, solder stencil and assembly labor for loading the components. Our turn-key quotes also show component pricing as indicated. We do not charge setup fees or NRE\'s for assembly.

Q5: On turn-key jobs, what does JHY PCB do about part crossing or substitutions?

First of all, we check your Bill of Materials (BOM), and send you the list of what we already have in our inventory. These are mostly low price or Free Parts. We will give you advice on how to reduce BOM costs by parts crossing and using our free stock parts, but all part changes are your own final decision.

Q6: How do you order components for Turn-Key orders?

We order volume quantities if the parts in your Bill of Materials are common, and none remain in our inventory. If we generally keep your chosen parts in stock, you will pay little or nothing for these components. For uncommon parts listed in your BOM, we usually order 5% or 5 spare parts (depending on size and cost) to accomplish your order without missing parts or shortages due to Production Loss. We cover the cost of production loss on our end, so you never have to worry about paying extra. 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.

Q7: 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.

Q8: 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. If you discuss your target price with your Bittele account manager, we can work with you to find a good solution for your specific needs in cost reduction.

Q9: 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. For testing and evaluation purposes in your lab, you can also order the regular parts from us for free. Please don't forget to inquire with us when your PCBs are ready for shipment.

Q10: What files and documents do you request for my PCBA orders?

We need Gerber files, Centroid data and BOM for your PCBA orders. As have already placed your PCB order with us, actually you only need to send the latter two if your PCB Gerber files have included the layers of silkscreen, copper track and solder paste. If your PCB Gerber files are missing any of the above-mentioned three layers, please resend them, as this is the minimum request for PCBA. For the best possible result, please also send assembly drawings, instructions and photos to us to avoid any ambiguous and even mistaken placement of parts, though these are not required by most of the assemblers.

Q11: 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.

Q12: Is your assembly RoHS Compliant?

Yes, We can handle lead-free builds. But we also offer leaded PCBA services.

Q13: 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.

Q14: Do you have any special requirements for BGA type components?

Component footprint should be made per manufacture recommendations for pad size and mask clearance. All BGA type devices are required to have all vias under component tented with soldermask

Q15: Can you source some parts for my assembly?

Yes. This practice is called partial Turn-key. You can supply some parts, and we source the rest of the parts on your behalf. We will ask for your approval for anything that is not sure at our side. In case parts crossing or substitution is needed, we will again ask for your final approval.

Q16: How should I kit parts if I'm submitting multiple orders?

Multiple kits can be sent in one package, but every package must be marked with each order number
Parts used on multiple jobs should be marked with a sticker to note they are shared
Make sure you provide 5% extra parts for each separate build
See our handy Consigned Parts Guide for more information

Q17: 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.

Q18: What do you do with unused parts?

We return all unused parts to the customer whether kitted/consigned or turnkey.

Q19: What if I have problems with my loaded boards?

If after receiving your loaded boards you run into problems of any kind, contact us at once. We will evaluate the issue and repair/rework or remake as may be appropriate after determining the root cause of the problem. For any returns, we will issue you a RMA number.

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