CERPACK

    

The Ceramic Package, or Cerpack, is a hermetically sealed rectangular ceramic package that has leads extending from both of its longer sides, thus forming two sets of in-line pins. It is therefore a type of dual-in-line package (DIP) like the CerDIP

Figure 1.  Example of a Cerpack

   

Just like the CerDIP, the Cerpack's ceramic body is composed of an upper part called the 'cap' and a lower part called the 'base'.  After the die has been mounted and wire-bonded inside it, the base is sealed with the cap using molten seal glass that solidifies into a moisture-resistant material once it cools down. 

   

The difference between a CerDIP and a Cerpack is that the leads of the latter are directly attached to the base (lower half) of the package body.  Cerpacks, therefore, no longer need to have a lead frame attached to the base unlike the CerDIP.

   

Cerpack lead counts range from 3 to 40.  The lead pitch of a Cerpack package is typically 50 mils.  Table 1 shows typical nominal values for the dimensions of some examples of Carpacks.

   

Table 1. Properties of Some Examples of Cerpacks

Lead Count

Width

Length

Thickness

Lead Pitch

10

241 mils

270 mils

70 mils

50 mils

14

250 mils

390 mils

70 mils

50 mils

16

250 mils

390 mils

70 mils

50 mils

20

266 mils

540 mils

75 mils

50 mils

  

See more IC Package Types

   

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