Which IPC class does your board need?
IPC class 2 vs 3 vs 3A changes your stackup, vias, spacing, and cost. Answer five questions and get a recommendation with the reasoning — and what it means for your design.
How it decides
IPC build class is governed by the most stringent driver — industry, failure consequence, regulatory mandate, environment, and serviceability each set a floor, and the highest one wins. This coach applies that rule and explains every factor that pushed the result. It’s guidance to start the conversation, not a compliance ruling; your governing standard or customer contract is authoritative. For the full picture, read IPC class 2 vs 3 — when does it matter?
Need it built to that class?
Every PhySignoff includes an IPC class verdict with rationale your auditor accepts.