The
TO-226
is
a
small
type of plastic-molded "transistor outline" package commonly used for housing discrete
devices such as
transistors and thyristors as well as IC's with low lead counts such as
voltage regulators.
The
TO-226 has a flat front face that is marked
with the device name or number, while its back is semi-circular in shape
(see Fig. 1). Since it is most often used in transistor packaging,
the TO-226 usually has three leads, all of which protrude from the bottom
of the package. The typical lead pitch (distance between leads) of the TO-226 is 1.27 mm or 0.5 inch.
The TO-226 is structurally similar to
the TO-92, but it is bigger than the latter
because of its longer body.
Table 1.
Properties of a Typical 3-Lead TO-226
|
Plastic Body Size
(H x W)
|
Body Thickness |
Lead
Width
|
Lead
Thickness |
Minimum
Lead
Length |
|
7.62 mm x 4.58 mm |
3.56 mm |
0.43 mm |
0.39 mm |
12.7 mm |
