PCB DEFECT DIAGNOSIS

Hole-wall quality

Problem → causes → verification → initial corrective action. Preliminary guidance to be validated on the actual process.

01

Problem

Hole-wall quality

02

Possible causes

Tool wear, parameters, material, heat, vibration or uncontrolled evacuation.

03

Verification

Assess roughness, smear, fibres, inner copper and vertical distribution in the microsection.

04

Initial actions

Optimise tool and parameters, entry/back-up, extraction and spindle-collet stability.

Request initial assessment