IPC 4121 : 0
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GUIDELINES FOR SELECTING CORE CONSTRUCTIONS FOR MULTILAYER PRINTED WIRING BOARD APPLICATIONS
01-01-2000
1 SCOPE
1.1 Purpose
1.2 Recommendations
1.3 Clarifications
2 APPLICABLE DOCUMENTS
2.1 IPC
3 TERMS AND DEFINITIONS
3.1 Registration Number (REG#)
3.2 Thickness
3.3 Construction
3.4 Resin Content (% RC)
3.5 Dielectric Constant (DK)
3.6 Dielectric Constant Tolerances (DK TOL)
3.7 Dimensional Stability
3.8 Coefficient of Thermal Expansion (Z-CTE)
3.9 Thickness Tolerance (THICK TOL)
3.10 Chemical Resistance (CHEM)
3.11 Measling (MEASLE)
3.12 Availability (AVAIL)
3.13 Cost
3.14 Flatness (FLAT)
3.15 Smoothness (SMOOTH)
3.16 Drillability (DRILL)
4 RECOMMENDATIONS
4.1 Thickness Categories
4.2 Construction Comparison
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