TO-8 Package

                                                  

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

   

Figure 1.  Example of a 16-pin TO-8 Package

      

See more TO Package Types

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