Dear customers, Please kindly have an alert that according to our project experience, we foresee that many ICs will be in very tight supply or even out of stock for a long time, so please schedule your crucial projects of 2021 beforehand. : For more details, please have an alert to this news, down load Electronic Components Price Increase Reminder_Weller Technology Co., Limited

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What is the PCB dielectric constant?

Dielectric constant is a value that reflect the ability of a type of material to store electrical energy. The dielectric constant value for PCB base material is typically from 3.8-4.8. You can easily find it from the datasheet of PCB base material, such as the Dielectric constant for Shengyi s1000-2 is 4.4 (@Permittivity (1GHz)).

What software do you use for PCB layout? Can you generate out the Altium files?

The software we used for PCB layout is Cadence Allegro which is a layout software for professional development of printed circuit boards and complete electronic systems with more powerful features than Altium files in high-speed PCB design. However, we can normally generate one set of Altium files for customer’s reference, but this not for official … Continued

Do you have UL913 certifications.

UL913 is a certification for Product safety with intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations is a unique situation. Currently there are two active editions of the standard: 5th and 7th.  (The 6th Edition was withdrawn in April 2008 in the sense that the … Continued

What is your Manufacturing capability for metal filled via?

Can you do metal filled via? => Yes, we can do that. If so, what are the rules for min via hole diameter, min via pad size and min hole to hole clearance? => The via hole diameter range should be 0.15-0.55mm. And,If via hole is 0.2mm, then min pad diam is 0.4mm. The pad … Continued

AL6061 is OK for the metal material and Rogers stack up?

We plan to use AL6061 for the metal material. IS this OK? What other materials are available? ==>Al6061 is ok to us, but which is a “flex” aluminum material, but it will be much easy in the manufacturing process if you can use AL2024 which is a rigid material with it’s Rigidity(hardness) value up to … Continued

Do you have standard thickness for Metal-backed-PCB

Do you have standard metal thickness that we need to obey or, If we want to have an exact metal thickness of 1.2mm is this doable on your side. The thickness is not finalized can be 1.2 or 1.4mm for instance. ==>No standard thickness, it would be ok as long as your thickness >= 0.65mm. … Continued

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

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