6241f.pdf - 第32页
Page 24 GS-394-02 Component Body Length Considerations After the tooling type and the variables have been determined from the Insertion Tooling Specification table, the minimum allowable hole span can be determined for a…
Page 23GS-394-02
Insertion Tooling Specification
1
Tooling Type
Standard 5mm
Minimum Hole Span
2
7.62 (0.300) 5.00 (0.197)
(with minimum lead
diameter)
Maximum Hole Span
2
24.13 21.59
(with maximum lead (0.950) (0.850)
diameter)
Steel Wire Lead Size Minimum 0.38 (0.015) 0.38 (0.015)
Maximum 0.81 (0.032) 0.81 (0.032)
Copper Wire Lead Size Minimum 0.38 (0.015) 0.38 (0.015)
Maximum 0.81 (0.032) 0.81 (0.032)
Component Body Minimum Wire lead dia. Wire lead dia.
Diameter
Maximum
3
10.69 (0.420) 11.68 (0.460)
minus 2 X board minus 2 X board
thickness thickness
1
Dimensions are given in millimeters; inches are in parentheses.
2
Insertion hole span is defined as the hole center distance.
3
At 5mm hole spans, maximum component body diameter is 2.29mm (0.090").
Insertion Head Input Specifications
Page 24 GS-394-02
Component Body Length Considerations
After the tooling type and the variables have been determined from
the Insertion Tooling Specification table, the minimum allowable
hole span can be determined for a known body length.
Machine capabilities allow components to be inserted using the
minimum hole span formulas below. Due to body length variations,
it is recommended to design hole spans greater than the calculated
minimum.
Use the following formulas, depending on tooling type -- standard,
large lead, 5mm, or 5.5mm -- to calculate the minimum insertion hole
span for a known body length. The formulas apply to the body length
ranges shown and are based on a ±0.41mm (0.016") component
centering accuracy on the input tape. Component centering must
meet requirements stated in GS-061.
Minimum Insertion Hole Span Formulas for Maximum Body Lengths
Standard Tooling [Body Length Range: 0 to 15.75mm (0.620")]
Metric Formula: Minimum Hole Span = [(Component Body Length
1
x 1.112) + 2.36mm] - Lead Diameter
Inch Formula: Minimum Hole Span = [(Component Body Length
1
x 1.112) + 0.093"] - Lead Diameter
5mm Tooling [Body Length Range: 0 to 15.75mm (0.620")]
Metric Formula: Minimum Hole Span = [(Component Body Length
1
x 1.109) + 1.40mm] - Lead Diameter
Inch Formula: Minimum Hole Span = [(Component Body Length
1
x 1.109) + 0.055"] - Lead Diameter
1
Subtract an additional 0.41mm (0.016") from the maximum body length for non-symmetrically shaped
components.
HOLE SPAN
Page 25GS-394-02
Recommended Component Clearances
1
A
B
C
D
C
Standard and 5mm tooling
Lead
Diameter
0.38
(0.015)
0.81
(0.032)
A Dimension
2
0.97
(0.038)
1.22
(0.048)
B Dimension
1.14 (0.045)
C Dimension
0.25 (0.010)
D Dimension
0.76 (0.030)
1
Dimensions are given in millimeters; inches are in
parentheses.
2
Dimension A is measured at the smallest possible footprint
for standard, and 5mm tooling.
See Tooling Footprints for related dimensions.