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User Manual Line Computer UNIX 6 Product / Package Form Software Version 501.xx 01/99 Issue 6.1 Package Form Editor 6 - 13 Fig. 6. 1.6 Example: nominal dimension "Z" for co mponent with indented surface Editing…

6 Product / Package Form User Manual Line Computer UNIX

6.1 Package Form Editor Software Version 501.xx 01/99 Issue

6 - 12

Pin/Ball

This command permits the window for the description of the model data for a selected object

(pin/ball) to be opened.

●

From the view area select the group containing the object (pin/ball) whose model data you wish to

edit.

The selected group is surrounded by a rectangle.

●

Click on

Pin/Ball

The window for the description of the model data is displayed on the screen (see Fig. 6.1.21 or

Fig. 6.1.26).

6.1.2.5 Package Form Editor Editing Fields - "Vision data" Screen

NOTE

When an existing GF-file is opened upon the start-up of the Package Form Editor, the factory or customer

defined default values are contained in the editing fields described below.

Editing field "Nominal dimensions"

X +/-

[mm] component length, with indication of the tolerances

see Fig. 6.1.18 or Fig. 6.1.23

Y +/-

[mm] component width, with indication of the tolerances

see Fig. 6.1.18 or Fig. 6.1.23

Z +/-

[mm] component height, with indication of the tolerances

see Fig. 6.1.19 or Fig. 6.1.23

NOTE

The length of a component refers to the x-direction and its width to the y-direction.

The value for the nominal dimension "Z" (height) is used to calculate the travel path of the z-axis during

picking up and placing the component as well as during centering above the IC- or flip-chip camera. Any

incorrectly entered value can therefore result in errors in processing the component. Normally, the value

entered for "Z" refers to the dimension measured from the top side (= contact area of nozzle) to the bottom

side of the package form. However, in the case of package forms (e.g. headers) featuring an indentation

in the center, care must be taken to enter for "Z" the dimension measured from the indented

area to the

bottom side (see Fig. 6.1.6).

User Manual Line Computer UNIX 6 Product / Package Form

Software Version 501.xx 01/99 Issue 6.1 Package Form Editor

6 - 13

Fig. 6.1.6 Example: nominal dimension "Z" for component with indented surface

Editing Area "Body"

NOTE

This field is not

displayed if the current package form type is a "PDC" (see Fig. 6.1.2) or a "BGA" (see Fig.

6.1.3) since with these types the dimensions of the package body correspond to the nominal dimensions.

[mm] length of package body (see Fig. 6.1.19)

[mm] width of package body (see Fig. 6.1.19)

Editing field "Packaging tolerance"

NOTE

The values in this area define how much the component may shift in its delivery medium. If small values

are entered for the pick-up location, the reject rate may be increased since some components will no

longer be within the area of the search window (vision system).

If high values are entered for the pick-up tolerance, the reject rate may be decreased. Very useful are high

tolerance values for components that are picked up from wafflepack trays as these trays may have been

placed inaccurately on the carrier. Here, the values for the pick-up tolerance (packaging tolerance) in "X"

and "Y" should be set to the maximum value of 3 mm.

[mm] max. permissible positional tolerance of the component in the

package in x-direction

[mm] max. permissible positional tolerance of the component in the

package in y-direction

Angle

[Degree] max. permissible deviation from the 0-degree position of the

component (rotational angle in the package)

6 Product / Package Form User Manual Line Computer UNIX

6.1 Package Form Editor Software Version 501.xx 01/99 Issue

6 - 14

Editing field "Acceptance limits" (only FDC and BGA)

NOTE

When the Package Form Editor is opened for a new package form, the editing fields of this area already

contain the default values for the spacing and row tolerances.

In the case of the "BGA" package form type (see Fig. 6.1.3) only the "Spacing" editing field is available.

Spacing

[mm] Max. permissible value for pin spacing deviation

(spacing ^

distance between pin(ball) centers)

If the value for the pin spacing error limit is exceeded (i.e. the

leads of an "FDC" are bent at the sides)

the component is identified as defective by the Vision System

and excluded from the placement program.

Row

[mm] Max. permissible offset of opposite identical rows of

a "FDC" (i.e., max. permissible symmetric deviation)

Cubic component

[mm] Description see section 6.1.2.3

NOTE

When the Package Form Editor is opened for the definition of a new package form, the editing fields

"Nominal dimensions" and "Packaging tolerance" are blank, only the editing area "Acceptance limits"

already contains the default values".