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Alternate Final Finishes
Types: ENIG, Immersion Silver, Entek HT
Minimum Panel Size: 5" x 5"
Maximum Panel Size: 21" x 24"
Minimum Panel Thickness: .015"
Maximum Panel Thickness: .250"
Finish Thickness Ranges:
ENIG 120 to 240 microinches Electroless Nickel and
2 to 4 microinches Immersion Gold per IPC-4552.
Immersion silver: Solderable surface only.
Typical thickness ranges from 5 to 12 microinches
per IPC-4553.
ENTEK HT: Solderable surface with visual acceptance
criteria only.
Dry Film Solder Mask
Type: Dupont Vacrel 8100
Minimum Panel Size: 5" x 5"
Maximum Panel Size: 18" x 24"
Minimum Panel Thickness: .020"
Maximum Panel Thickness: .125"
Dry Film Mask Thickness: 4 mils
Specification: Meets IPC-SM-840 Class III requirements.
Special Capabilities: Uniform thickness and
superior via tenting capabilities.
Liquid Photo Imageable Solder Mask
Type: Lackwerke Peters ELPEMER AS 2467 XM-XG
Minimum Panel Size: 9" x 9"
Maximum Panel Size: 21" x 24"
Minimum Panel Thickness: .015"
Maximum Panel Thickness: .125"
Mask Thickness: .8 mils to 1.2 mils
Color: Extra Matte / Extra Dark-Green
Specifications: Meets IPC-SM-840 Class III and Belcore
GR-78-CORE.
Special Capabilities: Very good resistance to galvanic and
electroless nickel/gold, palladium, tin baths, and OSP
processes.
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Scoring
Unit: AS-150
Minimum Panel Size: 5" x 5"
Maximum Panel Size: 25" x 25"
Minimum Panel Thickness: .020"
Maximum Panel Thickness: .125"
Unit Positioning Accuracy: +/-.001"
Residual Web Thickness: Fully adjustable down to .005"
Panel Support:
2 corner clamps pinning with .126" diameter
tooling holes and Urethane coated guide wheels.
Closest score line to tooling hole: .250" minimum
Score Webs: 30, 45, and 60 degrees .
(30 degrees is standard)
Special Capabilities: Jump scoring and top to
bottom blade off-set.
Horizontal Hot Air Solder Leveling
Unit: Teledyne Halco WSL 175
Solder: Eutectic Sn63-Pb37 Solder
Minimum Panel Size: 5" x 5"
Maximum Panel Size: 21" x 24"
Minimum Panel Thickness: .015"
Maximum Panel Thickness: .250"
Capabilities: 20 mil pitch or greater a thickness
range of 80 to 800 microinches with a 250 to 500
microinches deviation.
Specifications: Meets IPC-6012 and IPC-J-STD-003
On less than 20 mil pitch a thickness range of 100 to
1500 microinches with a 400 to 600 microinches deviation.
On BGAs a thickness range of 80 to 800 microinches
with a 200 to 400 microinches deviation.
On small chip sites .060" x .060" thickness range
100 and 600 microinches is typical.
On plated through holes on panels less than .125"
thick and with hole aspect ratio less than 8 to 1,
a .001" to .002" hole size reduction from copper
diameter is typical. A maximum hole size reduction
of .003" from copper diameter may be expected.
Panels over .125" thick need to be evaluated. |
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