SPC58ECX datasheet(116/153 Pages) STMICROELECTRONICS

116 / 153 page

Package information

SPC584Cx, SPC58ECx

116/153

DS11620 Rev 8

Figure 54. eTQFP100 leadframe pad design

5.3

eTQFP144 package information

Refer to Section 5.3.1: Package mechanical drawings and data information for full

description of below figures and table notes.

Note: number, dimensions and positions of grooves are for reference only.

Table 68. eTQFP100 symbol definitions

Symbol

Definition

Notes

aaa

The tolerance that controls the position of the

terminal pattern with respect to Datum A and B. The

center of the tolerance zone for each terminal is

defined by basic dimension e as related to Datum A

and B.

For flange-molded packages, this tolerance also

applies for basic dimensions D1 and E1. For

packages tooled with intentional terminal tip

protrusions, aaa does not apply to those

protrusions.

bbb

The bilateral profile tolerance that controls the

position of the plastic body sides. The centers of the

profile zones are defined by the basic dimensions D

and E.

—

ccc

The unilateral tolerance located above the seating

plane where in the bottom surface of all terminals

must be located.

This tolerance is commonly know as the

“coplanarity” of the package terminals.

ddd

The tolerance that controls the position of the

terminals to each other. The centers of the profile

zones are defined by basic dimension e.

This tolerance is normally compounded with

tolerance zone defined by “b”.

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