Caring Circuit Tech Limited
Tel. +86 755 2309 0196
Fax. +86 755 2309 0196
An unbelievably simple approach to order from us.
Just two steps from you
Step #1: You- Send Gerbers with quantity, specifications, destination, etc. View details
Step #3: You- Confirm your order and pay. View payment term
All in advance (preferred, it will save bank charges)
30% deposit and balance before delivery against pcb reports and photos of bare pcb, packages and packing list (OK). View reports and photos format
Step #4: We- PCB layout check and fabrication. View engineering query format
Step #5: We- Reports of fabrication status. View fabrication reports format
Step #6: We- Deliver and send you delivery note. View delivery note format
Heavy Copper Board does not have a set of definition in IPC standard. However, peopel generally use this name to identify a printed circuit board with copper conductors 3 oz/square feet- 10 oz/square feetin inner and/or outer layers. And Extreme heavy copper PCB refers to 20 oz/square feet to 200 oz/square feet printed circuit board. Heavy copper normally used for a various products but not limited to: high power distribution, heat dissipation, planar transformers, power converters, etc.
If your design of copper weight is more than 1OZ, you'll make the board cost increase and you'll need to increase the width of your traces. The cost increase is not only due to the raw material costs but processing thicker copper weights takes more time and is a little trickier to do. Keep the following chart in mind when designing your board. Allowing as much space as possible between copper elements for thick copper design will yield a more robust final product and will be cheaper to manufacture in the long term.
|Cu Weight||Min Recommended Space between Copper Features|
|1 oz||3.5 mil (0.089 mm)|
|2 oz||8 mil (0.203 mm)|
|3 oz||10 mil (0.254 mm)|
|4 oz||14 mil (0.355 mm)|
A current calculator: http://circuitcalculator.com
Why use Heavy Copper
Increased mechanical strength at connector sites and plated holes.
Increase in cross-sectional area of conductors without increasing trace width or decreasing trace/trace spacing.
Higher current carrying capacity in traces AND in through holes or vias.
Use of high temperature dielectric materials to their full potential.
2L : + USD 100
4L : + USD 220
6L : + USD 550
8L : + USD 1100
For more than 0.5sq.m and 5OZ or more, pls contact us for quotation.
Inner package: vacuum package+dryer
Outer package: carton package+Bulb package
More information about packing, pls visit price and answers>packing
4OZ Copper printed circuit pcb weight and shipping, pls visit price and answers>shipment
FQC(Final Quality Control)
AOI(Automated optical inspection)
More information quality control, pls visit quality>quality control flow
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