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IPC Class 2 vs Class 3 Build-Tier Selector
IPC Class 2 vs Class 3 Build-Tier Selector
Specifying the wrong class wastes money (Class 3 you didn’t need) or risks field failure (Class 2 where you needed 3). Answer 5 questions.
1. Is this for medical, automotive, aerospace, defense, or other safety-critical use?
2. Would a field failure risk life, recall, or major liability?
3. Must the board survive high vibration, thermal cycling, or extended service life?
4. Is zero plated-hole void tolerance contractually required?
5. Consumer / industrial-control product where cost matters most?
IPC Class 2
Dedicated service electronics — relaxed annular ring, one void allowed in 5% of holes, 0.8 mil plating. Cost-efficient for consumer and industrial control.
Guidance only. IPC acceptance criteria per IPC-A-600 / IPC-6012. PCBark fabricates to both Class 2 and void-free Class 3 with full documentation. Source: published IPC design-rule references.
