| Terminology | Reference Symbol | Description |
|---|---|---|
| Nominal dimensions | - | Mount pad in-line interval |
| Package length | D | Largest dimension of the package length excluding terminals |
| Package width | E | Largest dimension of the package width excluding terminals |
| Overall width | HE or HE |
Dimension including the peripheral terminal length with regard to the package width direction |
| Seating plane | S | The surface determined when package is placed on a horizontal surface |
| Seated height | A | Height from the seating plane to the highest point of the package |
| 1st standoff height | A1 | Height from seating plane to base plane (bottom edge of package body) |
| Package height | A2 | Package height ( including package warp ) |
| Standard height of soldered point | A3 | Standard height of 0.25mm from seating plane |
| Terminal pitch | e | Terminal pitch. This represents theoretical reference dimension. |
| Terminal width | bp | Width of terminal with plating |
| Terminal width | b1 | Width of terminal before plating |
| Terminal thickness | c | Thickness of terminal with plating |
| Terminal thickness | c1 | Thickness of terminal before plating |
| Length of flat section of terminal | L | Projection length of flat part of terminal |
| Length of soldered section of terminal | Lp | Effective projected length of terminal attachment defined by standard height of soldered part |
| Terminal length | L1 | Projection length of terminal |
| Tolerance value of terminal center position |  |
Positional tolerance for center axis of the terminal on seating plane. Using the maximum material principle, show the tolerance for maximum terminal width. When terminal width is narrow, allowable tolerance is increased by the difference with the maximum width. |
| Coplanarity | y | Uniformity of the bottom-most surface of the terminal relative to the datum S (seating plane) |
| Terminal uniformity angle | θ | Angle between flat part of terminal and seating plane |
| Package overhang | Z or ZD | Distance from center of terminal at the extreme edge of lengthwise direction to package edge |