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Material:
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A variety of ESD and non-ESD materials with or without
optical sensitivity can be used if you desire.
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Stiffener Bars:
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¼” x ½” double-channeled aluminum, custom
extruded.
Located on all 4 sides of the fixture.
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PCB Holddowns:
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All holddowns are spring-loaded and assembled
from the top side.
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Type: 
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#0
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Spacing:
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3" - 5" as space permits.
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Component Holddowns:
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All holddowns are spring-loaded, and assembled
from the top side.
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Type:
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CH-series holddowns
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Spacing:
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Where applicable
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Fixture Width/Length:
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Varies with every application, however standardizing
these dimensions can decrease your process setup and increase
throughput.
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OverArm Bars:
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Utilized if determined necessary by SP Sales &
Engineering
tech staff.
Standard design (with plungers)
is fully adjustable in both "X" and "Y" axes.
Options include the following:
-Hinged or Detachable
-Plungers or Pressure pads
-Custom
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Standoffs:
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Used where overarm bars are not desired.
(a less effective solution, not usually
recommended)
Can also be used in conjunction with OverArm bars for very large
PCB's .
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Edge Step:
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Lip thickness to be .062".
Step width to be .250".
Edge step to be on all 4 sides.
Bottom of PCB to be coplanar with bottom of edge step.
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Bottom Bevel:
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30 degree knife-edge surrounding bottom side through-pockets.
45 degrees only when necessary to avoid breaking through topside
walls and floor.
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Floor Thickness:
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Bottom side up design.
PCB should set in fixture as low as possible.
Floor thickness .075"-.100" preffered in most cases.
This is dependant upon the total surface area of the floor.
Minimum .050” floor in isolated areas not to exceed 2"
x 2" square.
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Wall Thickness:
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Through-pocket wall thickness to be .050"
minimum, but thicker is always better.
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Clearances:
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A clearance of .015” on each side of the
PCB pocket should be relieved for thermal expansion.
A clearance of .010" is added beyond the profile of the Surface
Mount component. (depth of pocket)
If a connector overhangs the edge of the PCB, pocket relief will
span .250" beyond the edges of the connector, and relief
depth will be the same as the PCB pocket.
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Finger Pockets:
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Standard on all fixtures for ease of PCB removal.
Depth is .050" - .100" below PCB pocket.
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Part Numbering:
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All fixtures will be engraved with GSC/SP's
phone number, GSC/SP 's program number (for
ease of re-ordering), and customer board number / name.
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Final Approval:
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When the CAD design has been completed, design
drawings will be sent to you via email
for final approval. GSC/SP
designs are provided in pdf format, while customer designs
can be provided in dxf or dwg formats if you desire.
It is extremely important that you approve
the final design as quickly as possible in order to meet your
deadline. Approval delays can result in manufacturing delays,
which can ultimately threaten your delivery deadline. Approval
is accomplished by emailing back the approved drawing for our
records with the consent of the engineer responsible.
Final drawings will include all pocket depths, the overarm bar
location, the number of plungers per overarm bar, edge step configuration
and board data overlaid (if available).
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Lead Times:
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5 business days.
1 - 3 business day turns are available.
(Purchase order required.)
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Shipping:
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Per customer requirements. (FOB
Garland, TX)
(Account number for your preferred
carrier needed.)
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Other Notes:
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GSC/SP will never discard or overwrite old
programs due to PCB rev changes.
These standards apply only to wave solder fixtures.
All standards can be modified per customer requirements.
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