PCB Fabrication
WELLER submits every PCB quote only after a thorough engineering review and understanding of your technical specifications.
Once a PCB designer completes the layout, the next step is to prepare the necessary files and submit them to a PCB manufacturer for a quote. If the lead time and pricing meet your budget, you can proceed with production. Regardless of your PCB supplier, the goal remains the same: achieving reliable quality at the lowest possible cost.
The accuracy of a PCB quote depends on a thorough assessment of the manufacturing process. To avoid delays, ensure your quote request includes all required files and specifications in a single package. Missing critical details will force the manufacturer to follow up, delaying the order and potentially extending production timelines beyond expectations.
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Don’t hesitate, contact us to start discussing your projects. We prioritize your inquiries and aim to respond within 12 hours.
The critical information and specification required for an accurate PCB manufacturing quote:
01
Not to send your PCB design flies, as the PCB manufacturer only read CAD files not design files. It is better to include these necessary files along with your Gerber file: fabrication drawing, excellon frill file, Readme.txt, IPC nest
02
Rigid, flex, and rigid-flex, etc
03
1, 2, 4, 6…
04
You need to mention the panel specification if you need a panel shipped for assembly purpose
05
You need to present your stack up details once your PCB have any impedance requirement
06
You need to specify whether it should be UL certificated or not, as some suppliers like to use inferior material that not UL list to get lowest price without any notification to their clients.
07
Specify your copper thickness is a final finished value or a base value, there are different feature which might impact the cost and impedance if there is.
08
08-1: The commonly used surface finishes include hot air solder leveling (HASL), electroless nickel immersion gold plating (ENIG), electroless nickel electroless palladium immersion gold (ENEPIG), immersion Tin, Immersion Ag, OSP and others. Therefore, if not properly specified, a wrong type of surface finish will have negatively impact the PCB efficiency. This is an important specification that is often missed by most young designers while requesting a quote.
08-2: Specific coating thickness needed if it is immersion gold of which the difference will impact the final PCB cost.
09
09-1: Green is a common using color; other colors are also available but sometimes will limit the soldermask dam width on SMT PAD spacing.
09-2: Please evaluate your budgetary once a special brand solder mask required: such as Taiyo PSR-4000BN, etc..
10
10-1: White is a common using color.
10-2: Just like the solder mask, just saying ‘yes’ in the silkscreen option is not enough. Questions regarding whether special brand (Such as Taiyo) and what color is required should also be answered.
11
You need to provide impedance details if you have impedance on some layers of your circuit board, supplier can have this to have a calculation for access of manufacturing.
12
If you have some via holes design in SMT PAD, you need to specify whether these via holes need to be filled or not, as this could be have an impact on PCB assembly quality if via holes on PAD not filled.
13
Vacuum packing is a common way now, but you need the exact PCS per lot package; or else the supplier will use their regular economic packaging such as 20pcs/package, 50pcs/per package. And, paper need to filled between PCBs if they are gold or silver finishing, to avoid the scratches which will have impact on assembly quality.
14
IPC class 2 or IPC class 3 (Generally, class 3 has an excellent quality standard, but the cost will raise up more than 10%)
All printed circuit board manufacturing quotation in WELLER will be done DFM review by our experienced engineer before any prices submitted, you can rely on as your professional PCB supplier.
