AMR conductor-resistance tracking during thermal cycling

ESPEC · Warpage, topography and stress metrology

Purpose: Post-reflow continuity problems require tracking conductor or joint resistance through thermal cycling.
Technical approach: AMR uses four-wire multichannel resistance measurement with configured DC or AC excitation, synchronizing results with chamber temperature.
Scope of use: Contactable daisy chains, joints and connector coupons for post-reflow connection-reliability studies, after checking current sharing between paths.
Limitations and open questions: These evaluation considerations are compiled by BLNKK from public information. They are not supplier guarantees or a mandatory submission checklist.
Scope and limitations
Cable rating does not establish peak-reflow suitability for the complete setup. Scanned readings may miss brief interruptions; resistance changes do not locate microvia defects or cracks.
What to prepare
BLNKK suggests documenting chain connections, baseline resistance, current, cycle profile and thresholds, with cable, connection-solder and fixture details.
Confirm with the supplier
Confirm DC/AC choice, sampling at the selected channel count, interruption detection and wiring temperature limits. Verify specimen-temperature and chamber-link options separately.
Public evidence: ESPEC’s product page and December 2021 catalogue document measurement, chamber linkage and options. Standard cable continuous-duty temperature is +200°C.

Supporting references

Find the company’s contact details and ask about this solution through its official channels.