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Contact Us |
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E-mail:sales@abp.net.cn
E-mail:info@abp.net.cn
Tel:+86-755-26054178
Tel:+86-755-26406742
Tel:+86-755-26426045
Tel:+86-755-26068477
ext.822\ 823\ 824\ 804\
817\ 818\ 819
Fax:0086-755-26435488
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| Tolerances |
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- Inner Layer Clearances
We require a minimum of 0.010" inner layer clearance.
- Copper to Edge of Printed Circuit Board
Minimum of 0.010" (outer layers) and 0.014" for inner layers (0.020" preferred
for inner layers). For scoring, minimum of .015 for outer layers and .020
for inner layers.
- Pad Size/Annular Ring
Pad size should be at least + 0.010" over finished hole size for vias
and + 0.014" over finished hole size for component holes. This means
the annular ring (radius of the pad) should be at least .005" for vias
and a minimum of 0.007" for component holes.
- Hole Size
+/- 0.005" Prototype
+/- 0.005" Production default
+/- 0.003" Production upon request 1 oz and 2 oz finished copper weight
only
Minimum finished hole size; 0.010". Call your salesperson if you required
a finished hole size less than 0.010".
- Printed Circuit Board Thickness
Overall may vary +/- 10% (Minimum +/- 0.005")
- Minimum finished thickness for 2-layer: 0.005" (Call
if you need a thickness of less than 0.005")
- Minimum finished thickness for 4-layers: 0.020"
- Minimum finished thickness for 6-layers: 0.031"
- Minimum finished thickness for 8-layers: 0.047"
- Minimum finished thickness for 10-layers: 0.062"
- Inner Layer Thickness
Tolerances do not apply to the inner layers of prototypes.
- Rout (Board Outline)
+/- 0.010" (+/- 0.005" available for Production upon request)
Note: We rout to your board size using the center of the
board outline on your mask layer.
- Copper Trace Width/Spacing
This is the minimum air gap between any two adjacent copper features. Trace
width is the minimum width of a copper feature, usually traces.
- For trace width/spacing, we require a minimum of 0.005" for
1 oz. finished copper weight on outer layers. Premiums
are added for trace/space specs less than 0.008"
- For 1 oz. finished copper weight (inner layers), minimum
trace width/space is 0.005"
- For 2 oz. finished copper weight (inner & outer),
minimum trace width/space is 0.007"
- For 3 oz. finished copper weight (inner & outer),
minimum trace width/space is 0.010"
- For 4 oz. f inished copper weight (inner & outer),
minimum trace width/space is 0.012"
- Trace Width/Air Gap
The greater of +/- 20% or +/- 0.002"
- Soldermask Swell
This is the expansion of mask relief over pad area. Our minimum is 0.005" over
Pad dimension or 0.0025" each side. A swell of 0.006" is accepted,
however a one to one scale is preferred.
- Slot Width
Minimum 0.031" in width. For smaller width, call your salesperson for
pricing and turntime.
- Tab Rout Spacing
Please allow 0.100" spacing between your individual pcbs for tab rout
spacing. 0.015" for scoring.
- Silkscreen (Legend)
0.008" minimum line width.
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