What is your PROCESS FLOW for quality of PCB assembly?
We do all the PCB assembly work upon the certificate of ISO9001.
Questions
Do you review gerber files for any DFM violations or other issues and make any recommendations before fabrication?
We have engineering experienced engineer to use advanced PCB Gerber check software Genesis and Inplan from Orbotech Ltd to check customer’s Gerber file.So DFM review is our regular work to all customer’s orders. And we will issue DFM report if we find any design issues. We will start production until everything confirmed.
Why you can not provide PCB prototypes with 5USD
In China, there are many PCB shops provide PCB prototype manufacturing service with 5USD including shipping cost. But Weller cannot provide this type of this cost as PCB is a core component for PCB assembly, there would be a big loss to customer once the final assembled circuit board failure due to the incorrect PCB … Continued
Any other RF substrate like taconics, etc. that we can use to fill copper inton via hole?
Sorry taconics material is not OK as it is a soft feature material which can be randomly “expanded” by filled copper.
Can you do 2 layer RO4350 PCB with metal filled vias together with the 5mm metal back?
Sorry, we cannot do via filled to Rogers material, as Rogers material is too fragile, which is easy to be expanded to be “broken” by filling copper; 5mm metal back plate is ok
What is the smallest via diameter you can fill Cu into?
Minimum size is 0.2mm for copper filling via holes.
Can you do 2 layer RO4350 PCB with Cu coin, with 5mm thick Cu metal plate?
Yes,but the PCB final thickness (Rogers4350+copper plate base less than 6.0mm),you can visit “PCB embedded copper coin” for more details.
What are the via filling options? Cu filled? Soler mask plugging, and it’s clearance?
We can do via fillings as: solder mask plugging; resin plugging, copper filling to via holes (Cu filled), Cearance is 8mil.
Can you do 2 layer RO4350 PCB with Cu coin embedded?
Yes,we can,but need two pcs of RO4350 core stacked each other together,minimum PCB thickness: 0.80mm.For illustration,please visit:RO4350 PCB with Cu coin embedded
Do you have Cu coin capability? What are the rules? Min. Cu coin size, X,Y,Z dimensions etc?
PCB copper coin embedded is a perfect option to transmit the heat of the circuit board,but limited manufacturing capaiblity as below: Copper coin thickness: 0.8mm(min), 3.0mm(max), can be more thicker than 3.0mm. Copper coin size: 3.0 X 3.0mm (min), 400.00 X 300.00mm(max); Spacing copper coin to holes: 1.0mm; Spacing copper coin to track: 1.0mm(min).
What is the necessary document for PCBA quote or order?
Documents Required to Quote or Order a PCB Assembly What do you need to get a quote on a PCB assembly? This is a great question and often a source of confusion. There are four basic documents and exactly how they are transmitted depends on your company’s tools; … Continued
Do you have Quick Turn PCB Assembly Services.
Yes, Weller can provide Prototype PCB Assembly as Quick as 1 Day. Our printed circuit board assembly service is South China’s leading one-stop solution for PCB and assembly under one roof; specializing in small and medium runs with fast lead-times and no minimum quantity requirement.
What is the typical process of a new project?
We will evaluate your part design and modify it to be efficiently injection molded. Then, we will build the mold for the part. Next, your mold will be put into an injection molding press to make production parts. On average the entire process takes 8-10 weeks.
What material should I use for my project?
Most material is application specific. If you don’t have a material selected for your application, we can help and offer some guidance. Often several resins can be sampled but the customer has final approval before proceeding.
How do I know if injection molding is the right process for my product?
The geometry of the part, the amount of parts needed, your mold tooling budget and the application the part is being used for will all influence your decision to injection mold the part.
Do you offer RoHS-compliant assemblies
Yes. Normally all our PCB board material used and PCB manfuactured by lead free process unlesse customer have other options.Anyway,all our PCB assembly process are lead free process which can 100% meet RoHS-compliant
What is the lead time for a turnkey PCBA order?
Assembly lead times quoted to the customer exclude the procurement lead time. The lead times for the turnkey PCB assembly order entirely depend on the time required to source the part. The assembly begins only after all the components are available in the inventory. Weller Technology sometimes have special routing to by the some curcial … Continued
How can I provide components for the assembly?
Usually customer is interested to ship the components to us from outside of China intead of we purchasing that.But please note that normally China custom will charge extra duty taxes as below approximately: ICs: 13% depending on the unit cost LED, connectors.resistors and capacitors: 30%-50% extra taxesThe long lead time on the custom clearance process. … Continued
What PCB files do you need for PCB manufacturing?
When you’re working on a PCB layout, you are editing a file that is specific to your CAD software. It’s not a universal file format, and it uses information that the PCB manufacturer does not need. This is why you have to generate a different sort of file (with an exception we’ll discuss at the … Continued
What if I need to cancel my order?
A prorated cancellation cost will be charged for cancelled orders depending on PCB fabrication status by the time of cancellation. Orders are subject to 100% cancellation fee. Please contact your Salesperson immediately and follow up with a fax or e-mail to confirm and provide written record for any verbal cancellation.
Do you provide custom designing assistance for PCB fabrication?
Yes, our team of highly experienced engineers and designers is available to provide you with assistance regarding customized PCB fabrication. Our designers also take in to consideration the manufacturing process for designing a board and chalk out the PCB layout accordingly.