| Terminology |
Reference Symbol |
Description |
| Nominal dimensions |
- |
Mount pad in-line interval |
| Package length |
D |
Length of package body |
| Package width |
E |
Width of package body |
| Overall width |
HE |
Dimension including the peripheral terminal length with regard to the package width direction |
| Seating plane |
|
The surface determined when package is placed on a horizontal surface |
| Seated height |
A |
Height from seating plane to the top edge of the package body |
| 1st standoff height |
A1 |
Height from seating plane to base plane (bottom edge of package body) |
| Package height |
A2 |
Height from base plane to upper edge of package body |
| Standard height of soldered part |
 |
Standard height of 0.25mm from seating plane |
| Terminal pitch |
 |
Logically correct distance between terminal center positions |
| Terminal width |
b |
Width of each terminal(including plating) |
| Terminal thickness |
c |
Thickness of each terminal(including plating) |
| Length of flat section of terminal |
L |
Effective projected 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 |
Length from terminal edge to package body, projected to seating plane |
| Tolerance value of terminal center position |
x |
Deviation from location where each terminal center should be - Maximum Material Condition (MMC) applies |
| Terminal coplanarity |
y |
Maximum deviation in vertical direction between each terminal bottom surface and seating plane |
| Terminal uniformity angle |
 |
Angle between flat part of terminal and seating plane |
| Lengthwise overhang |
ZD |
Distance from center of terminal at the extreme edge of lengthwise direction to package edge
|
