Key Engineering Specifications Your Custom Printed Circuit Board Fabrication Drawing MUST HAVE |:
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Thursday, June 26, 2014
Understanding PCB Manufacturing: Silk-Screening
Understanding PCB Manufacturing: Silk-Screening:
"Currently three methods are available for applying the “Ident” to the PCB.
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"Currently three methods are available for applying the “Ident” to the PCB.
- Manual screen-printing can be utilized when line widths are greater than 7 mil (0.007”) and the registration tolerance is 5 mil.
- LPI (Liquid Photo Imaging) provides more accuracy and legibility than manual screening and is employed when line widths are greater than 4mil.
- DLP (Direct Legend Printing) is the most accurate and legible of the 3 processes but also has the highest cost for consumables."
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Wednesday, June 18, 2014
CAF RESISTANT STACKUP NOTES
Example Notes for Specifying a CAF Resistant Stackup.
- Product must pass 1000 hr CAF testing (100V, 85%RH, 85C).
- B Stage (pre-preg) is restricted to the following glass styles: 106/1067, 1080/1086, 2113/3313 and 2116.
- C Stage (cores) must have a resin content > 45%.
- Isola 370HR material is to be used.
Note 'e' glass materials with coarse glass bundles like 7628, 1652 are prone to CAF.
Thursday, June 12, 2014
CAF RESISTANCE MATERIALS
Isola
Source: Isola PCL370HR CAF Enhanced
NAN YA PLASTICS CORPORATION
CAF - Conductive Anodic Filament
Click on image below to view
Source:
CAF resistance materials can withstand CAF testing for 2000 hours at 85℃/85%RH /50V DC
More CAF Links:
How to Avoid Conductive Anodic Filaments (CAF)
Link to all CAF Posts.
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Source: Isola PCL370HR CAF Enhanced
NAN YA PLASTICS CORPORATION
CAF - Conductive Anodic Filament
Click on image below to view
Source:
CAF resistance materials can withstand CAF testing for 2000 hours at 85℃/85%RH /50V DC
More CAF Links:
How to Avoid Conductive Anodic Filaments (CAF)
Link to all CAF Posts.
'via Blog this'