Detailed chemical compatibility charts. For example:
IPC-CH-65 (full title: Guidelines for Cleaning Electronic Assemblies) is a critical industry standard published by IPC (Association Connecting Electronics Industries). It provides comprehensive guidance on contamination removal during printed circuit board (PCB) and electronic assembly manufacturing.
Note: The official document is IPC-CH-65A (the latest revision, 2007), though many still refer to it as "CH-65." There is no newer revision as of 2026. ipc-ch-65 pdf
Subject: IPC-CH-65 PDF – Guidelines for Cleaning Electronic Assemblies
| Section | Topic | |---------|-------| | 1-3 | Introduction, definitions, safety | | 4 | Contamination sources & effects (electrochemical migration, corrosion) | | 5 | Cleaning materials & chemistries | | 6 | Process parameters (temperature, time, mechanical action) | | 7 | Cleaning equipment types | | 8 | Cleanliness testing & acceptance criteria | | 9 | Rinsing & drying | | Appendices | Troubleshooting, solvent compatibility charts | Detailed chemical compatibility charts
Reliability failures cost millions. Field returns due to "black pad" or "dendritic growth" are almost always traced back to inadequate cleaning. The IPC-CH-65 PDF is more than a technical document—it is a risk management tool.
| Aspect | Detail | |--------|--------| | Full Title | IPC-CH-65: Guidelines for Cleaning of Printed Boards and Assemblies | | Current Version | IPC-CH-65B (latest) | | Publisher | IPC (Association Connecting Electronics Industries) | | Main Focus | Contaminant types, cleaning processes, equipment, testing, no-clean residues | | Typical Users | Process engineers, quality technicians, assembly managers | | Legality | Copyrighted – must purchase from IPC | | Search Tip | Always check revision letter (A, B, etc.) – don’t rely on old “CH-65” only | Note: The official document is IPC-CH-65A (the latest
If you are setting up or auditing a cleaning process, buying the official IPC-CH-65B PDF from IPC is a cost that pays for itself in prevented field failures. For occasional reference, many technical libraries and IPC member companies hold a licensed copy.
Per IPC-CH-65 Section 6.4, acceptable post-cleaning ROSE values are < 1.56 μg NaCl equivalent/cm² for high-reliability assemblies (Class 3).