CCMP is recognized by U.L. as an approved metal clad multilayer package. Any U.L. recognized manufacturer of double-sided PTH or multilayer PTH printed circuit boards can purchase CCMP mass lam of as many layers as required, finish the process and ship the products as U.L. recognized multilayers.  
Multilayer package Destination Base Material
Component 		Minimum
buildup
thickness 		Copper
thickness 		Maximum
unpierced Cu.		 Maximum
temperature rating		 Flarrability
rating 		Solder limits
time/temperature:
Multiclad FR4 .025

1/2 oz. ext.

3 0z. int.

 2.0" 130 C 94VO 30 sec./288 C
Multiclad GX GTEK .025

1/2 oz. ext

1 oz. int.

 2.0" 130 C 94VO 30 sec./288 C

Sample letter to U.L. requesting CCMP's grade be added to your file:

Underwriters Laboratories, Inc.
Street Address
City, State, Zip


Attn: (your U.L. Contact)

Dear U.L. Contact,

Please add the following supplier and recognized component to our existing U.L. file # (your file #), as provided for in the CCIL program.
         

Supplier

CopperClad Multilayer Products MultiClad
File# E158006

 

Sincerely,

  

Recognized Component

MultiClad