The
TO-8
is
a
type of
transistor-outline
'metal can' package that is hermetically sealed to protect the
device from environmental factors such as contaminants and moisture.
It is commonly used in housing transistors and integrated circuits with
low pin counts such as transducers and resistor networks.
The TO-8 is made primarily of metal, with the microchip mounted on the
die pad of its metal can base and then covered with a metal cap.
Sealing of the cap over the base is achieved by welding.
Most TO-8 packages have pin counts that
range from 2 to 16.
Table 1.
Properties of some TO-8 Packages
|
Pin
Count |
Base
Diameter |
Cap
Diameter |
Cap
Height |
Lead
Length |
Lead
Pitch |
|
12 |
15.2 mm |
14 mm |
7.1 mm |
12.7 mm |
2.5 mm |
|
16 |
15.2 mm |
14 mm |
5 mm |
12.7 mm |
1.91 mm |
