The Composidie Family:Composidie Inc.CTE Inc.Leading TechEDM ServicesToolex Manufacturing
Etching

Chemical etching is a low-cost alternative to stamping tools utilized for prototyping and low-volume production.

Etching
Etching facilities within the Composidie family can support your production requirements with:

▪ High Speed, Continuous Process
▪ Non-Contact Glass Mask
▪ 0.002" to 0.025" Thick Materials
▪ Dry Film Type Photoresist
▪ Automated vision alignment system
  for exposure assures +/- 0.0005"
  (0.0127mm) offset mismatch
▪ Accurate unit-to-unit progression
  tolerance of +/- 0.001" (0.025mm)
▪ Leadframe, Connector, RF/EMI Products
▪ Major benefit in prototyping designs
  due to inexpensive tooling costs and
  shorter lead times.

Etch Design Guidelines

Material
Thickness
Typical Advanced
Minimum
Channel Size
Minimum
Hole Size
Minimum
Radius
Minimum
Channel Size
Minimum
Hole Size
Minimum
Radius
.003''
.0029''
.0059''
 
.0026''
.0053''
 
.004''
.0034''
.0064''
 
.0031''
.0058''
 
.005''
.0039''
.0068''
.0046''
.0035''
.0062''
.0040''
.006''
.0046''
.0074''
.0057''
.0039''
.0067''
.0050''
.007''
.0049''
.0079''
 
.0044''
.0072''
 
.008''
.0052''
.0084''
.0068''
.0047''
.0076''
.0060''
.010''
.0062''
.0095''
.0069''
.0056''
.0086''
.0065''
  Note: Each product's features must be evaluated individually. This chart is only
  intended to provide capability guidelines.

Typical Material Thickness:
.005'' to .010"
Advanced Material Thickness: .002'' to .004''
& .011'' to .023''
Top-to-Bottom Mask Registration:
.0005'' Maximum
Unit-to-Unit Progression Tolerance:
+/- .001''
Strip Pitch Tolerance:
+/- .002''
Maximum Stair Step Tolerance:
.0015''
1/2 Etch Depth Tolerance:
30% to 60% of Material Thickness
Min. Part (Strand) Width:
. 500'' +/- .002''
Max. Part (Strand) Width:
5.000 +/- .002''

Etch Tooling Guidelines

Mylar Tool

vs. Chrome/Glass Tool

Low Cost
-----
Best for Low-Volume
Production

-----
Fast Delivery
(2-3 Days)

-----
Geometry Confirmation
Prior to Chrome Tool

Pros

Permanent
-----
Best for High-Volume
Production

-----
Highest Precision
& Accuracy

-----
Greatest
Clarity/Flatness

Scratches Easily
-----
Not Capable of Highest Resolution (Accuracy)
-----
Less Stable
(Guaranteed for 1500')

Cons

Higher
Cost

-----
1-Week
Leadtime

We can provide the right tool for every job!



© Copyright CTE Inc. 2007
 


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CTE Inc.
30 Willow Springs Circle, York, PA 17406-8428
Phone: (717) 767-6636     Fax: (717) 764-2233


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