Design Guidelines: Laser Machining

Holes and Machined Features

Property Value and Tolerances Comments
Maximum Thickness
.060"
Thicker materials require factory consultation
min radius
.003"
CO2 beam width = .003", use .006" min radius to change cut direction
Smallest Feature
0.6:1(ratio) minimim diameter
to material thickness
 
Front to Back Taper
10 - 15% of material thickness
Includes bell effect at entrance
Via Hole for plated
thru connection
0.8:1 (ratio) hole diameter to material thickness
Measured at exit, account for metal anulas on circuit side
Via Hole filled
0.7:1 (ratio) hole diameter to material thickness
Account for metal anulas on circuit side
Feature Size Tolerance
± .002"
Non-Commulative
1X material thickness
Not less than .020"
feature to edge spacing
1X material thickness
Not less than .020"
post laser cut
± .003"
All cutouts require a .003" pullback of backside metal.
Diamond Sawing
± .001" min
± .002" Standard
 

Laser Scribe Specs

Nominal Substrate Thickness Resultant Segment Tolerance From Two Broken Edges Laser Scribed Edge of Board To First Scribe Line
(English)
(Metric)
(English)
(Metric)
(English)
(Metric)
0.010"
0.254 mm
+0.006"
-0.002"
+0.15 mm
-0.05 mm
+0.004"
-0.002"
+0.10 mm
-0.05 mm
0.015"
0.381 mm
+0.006"
-0.002"
+0.15 mm
-0.05 mm
+0.004"
-0.002"
+0.10 mm
-0.05 mm
0.020"

0.508 mm

+0.006"
-0.002"
+0.15 mm
-0.05 mm
+0.005"
-0.002"
+0.13 mm
-0.05 mm
0.025"
0.635 mm
+0.006"
-0.002"
+0.15 mm
-0.05 mm
+0.005"
-0.002"
+0.13 mm
-0.05 mm
0.030"
0.762 mm
+0.008"
-0.002"
+0.20 mm
-0.05 mm
+0.006"
-0.002"
+0.18 mm
-0.05 mm
0.035"
0.889 mm
+0.008"
-0.002"
+0.20 mm
-0.05 mm
+0.007"
-0.002"
+0.18 mm
-0.05 mm
0.040"
1.02 mm
+0.008"
-0.002"
+0.20 mm
-0.05 mm
+0.007"
-0.002"
+0.18 mm
-0.05 mm
0.050"
1.27 mm
+0.008"
-0.002"
+0.20 mm
-0.05 mm
+0.007"
-0.002"
+0.18 mm
-0.05 mm
0.060"
1.52 mm
+0.014"
-0.002"
+0.36 mm
-0.05 mm
+0.010"
-0.002"
+0.25 mm
-0.05 mm
0.080"
2.03 mm
+0.020"
-0.004"
+0.51mm
-0.10 mm
+0.012"
-0.003"
+0.30 mm
-0.08 mm
0.100"
2.54 mm
+0.025"
-0.004"
+0.64mm
-0.10 mm
+0.014"
-0.003"
+0.36 mm
-0.08 mm
0.120"
3.05 mm
+0.025"
-0.004"
+0.64mm
-0.10 mm
+0.014"
-0.003"
+0.36 mm
-0.08 mm

Notes:
1. Laser machined edges to first scribe line tolerance is ± 0.002" (± 0.051 mm) for all substrate thicknesses prior to breaking.
2. Scribe line to scribe line tolerance prior to breaking is ± 0.002" (± 0.051 mm).