We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 15660

Packaging: Ceramic Brazed (CB) Package - What is the composition of the leadframe? How much tin (Sn) and Gold (Au) do the CB packages have?


Key Words: CB, package, Tin, gold, leadframe

General Description:

How much tin (Sn) and Gold (Au) do the CB packages have?


CB package is a Ceramic Brazed package. The leadframe is composed of Kovar with nickel and gold plating. The sealing material is 80% gold and 20% tin.

NOTE: MQ and PQ packages use copper lead frame; this is not restricted to Cu 7025. Other types of copper are also used, including EFTEC 64T, CDA194, CD151, etc.

AR# 15660
Date 12/15/2012
Status Active
Type General Article