A complete material callout must include:
Example:
IPC-4101E/5 RTF 1/1 2116 DSC
Interpretation:
Since "exclusive" does not mean "free" (quality documentation costs money), here are the three legitimate channels to get the IPC4101 PDF immediately:
Before hunting for the PDF, you must understand the beast. IPC-4101, titled "Specification for Base Materials for Rigid and Multilayer Printed Boards," is the global benchmark for the properties of laminate and prepreg materials. ipc4101 pdf exclusive
It covers everything from glass weave styles (106, 1080, 2116, 7628) to resin systems (epoxy, polyimide, cyanate ester). If you are designing a high-speed digital board or a high-voltage power supply, IPC4101 dictates the thermal, electrical, and mechanical properties your laminate must meet.
| Slate | Description | |-------|-------------| | 1 | Standard FR-4 (Tg 130°C, DICY-cured, V-0) | | 2 | FR-4 with enhanced thermal decomposition (Td) | | 4 | FR-4, high Tg (170°C), non-DICY | | 5 | FR-4, high Tg (180°C), phenolic cure, lead-free assembly | | 10 | Polyimide – low thermal expansion | | 20 | Halogen-free FR-4 (IEC 61249-2-21 compliant) | | 21 | Halogen-free, high Tg (170°C) | | 50 | Cyanate ester – very low dielectric constant/loss | A complete material callout must include:
Don't just spec "FR4." IPC-4101 breaks laminates into Slash Sheets (e.g., /21, /24, /101). Here is the cheat sheet:
The most reliable source. You pay for a single-user license. You download a DRM-protected or watermarked PDF instantly. Example: IPC-4101E/5 RTF 1/1 2116 DSC Interpretation: Since