System board common problems

Surface treatment of the minimum molding size

 

Silver, tin, Entek molding the following minimum size:

Silver 90 * 55mm

Tin 100 * 150mm

Entek 90 * 55mm

Surface treatment such as one of the above, the single-chip size, smaller than the corresponding size, we will typeset shipping

 

 

Is there any RoHS?

 

The circuit boards we make are all RoHS compliant if the following surface finishes.

Lead-free spray tin, gold, silver, tin, electroplating gold, OSP.

 

 

Is it possible to create a circuit board out of specification?

Please send Gerber file to us and judge whether it can be made by Craft Department. Out of process capability can be used as R & D file processing.

 

 

Differences between standard Gerber RS-274D and RS-274X?

 

  The RS-274X is an extended version of the RS-274D and includes the RS-274X Parameters in addition to the RS-274D's Code, or the entire

  extended Gerber format It is a combination of two letters that defines some of the characteristics of the drawing process. Please RS-274X-based production.

 

 

Unit conversion.

  1ft = 12inch

     1 inch = 1000 mil = 2.54 cm = 25.4 mm

     1m = 100cm = 1000mm

     1mm = 39.37 mil

     1oz = 1.4mil

 

 

Circuit board testing standards why?

Circuit board products are in accordance with the IPC-A-600 specification shall prevail