The
Sidebraze Package,
is one of the most mature IC packages still in use
today. It is a 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). Two other widely
used DIP's are the PDIP and the
CerDIP.
Like the cerDIP, the sidebraze package is a hermetically sealed package
that keeps out moisture and contaminants once it is sealed. Unlike the
cerDIP which has separate upper and lower ceramic bodies, the sidebraze
package has a single ceramic body. This single body has a cavity
on top where the chip is placed and bonded. The sidebraze package
is hermetically sealed with a metal cap.
Sidebraze package lead counts range from
8 to 48. Sidebraze packages usually have a body width of
either 300 mils or 600 mils. However, 400- and 900-mil body widths
do exist. The lead pitch of a sidebraze package is typically 100 mils.
Table 1. Properties of
Some Examples of Sidebraze Packages
|
Lead
Count |
Width |
Length |
Thickness |
Lead
Pitch |
|
14
|
290
mils |
710
mils |
140
mils |
100
mils |
|
20
|
290
mils |
1015
mils |
140
mils |
100
mils |
|
28
|
290
mils |
1485
mils |
160
mils |
100
mils |
|
32
|
380
mils |
1600
mils |
160
mils |
100
mils |
|
40
|
580
mils |
1980
mils |
160
mils |
100
mils |
