D2PAK or
DDPAK -
Double Decawatt Package
The
Double Decawatt Package,
or
D2PAK
or
DDPAK
is
the successor to the DPAK package, which was designed by Motorola to
encase discrete high-power devices. The D2PAK is bigger than the
DPAK, and comes in several versions with different terminal counts. The
D2PAK, which has a flat heat sink at the back, is basically the
surface-mount equivalent of the TO-220 through-hole package and is
therefore sometimes referred to as 'SMD-220'.
The D2PAK is also known as 'TO-263'.
|
 |
|
Figure 1. Examples of the D2PAK |
D2PAKs can have 3 to 9 terminals. The typical D2PAK body
dimensions are shown in Table 1. The terminal pitch (distance between
terminals) of a D2PAK is dictated by its terminal count, as shown in
Table 1.
Table 1. Properties of
Some Examples of D2PAKs
|
No. of
Terminals |
Body
Size incl.
heatsink |
Body Thickness |
Total Length
incl. Leads |
Terminal Pitch |
|
3 |
400 mils x 390
mils |
175 mils |
600 mils |
100 mils |
|
5 |
400 mils x 390
mils |
175 mils |
600 mils |
67 mils |
|
7 |
400 mils x 390
mils |
175 mils |
600 mils |
50 mils |
