The printed circuit board should be hit by soldering tank (about 250 degrees Celsius) when doing HASL. After taking it out, it should be cooled naturally on the flat marble or steel plate, and it is cleaned at the processor. This is good for the board to prevent warpage. In order to enhance the brightness of lead-tin surface, some factories put the hot air into cold water immediately after leveling the plate, and take it out after a few seconds for post-treatment. This kind of hot and cold impact may cause warp, delaminate or bubble on some types of boards. In addition, air floatation bed can be added to the equipment for cooling.
In a well-managed factory, PCB will be checked for 100% flatness at final inspection. Any unqualified board will be picked out and placed in the oven, dried at 150 degrees Celsius and under heavy pressure for 3 hours, and naturally cooled under heavy pressure. Then the board is taken out and checked the flatness, which can save part of the board, some of which need two to three times of baking to smooth.( pcb supplier)
Process of pcb manufacturing:
Our Company is UL,ISO9001,ROHS and GJB9001B certified.
Packing and Shipping:
1. How to Get a quotation?
For PCBs,pls send us the Gerber File.For PCBA,pls send us the Gerber file and BOM(Bill of Materials)
2. What is the MOQ?
No MOQ.1 pcs is ok.
3.What is the lead time?
For PCB orders,the lead time is 2 to 10 days.For PCBA orders,the lead time will be 15 to 30 days.
4.Will the boards be tested before shippment?
Yes,all PCBs will be tested by Flying Probe or E-test.For PCBA,we will have AOI,X-ray,and functional test
Email us to get a quote: email@example.com