BT 4000HS high-speed joint-shear comparison

Nordson Test & Inspection · Reliability qualification and failure analysis

Purpose: Brittle joints and pad/substrate failures need comparison under controlled high-speed shear.
Technical approach: BT 4000HS records force-displacement/time and fracture energy using high-speed motion and force sensing.
Scope of use: Supplier-listed BGA/CSP/QFN joints and substrates, with adequate acceleration clearance and suitable tools, fixtures and access.
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
Destructive, rate-dependent local tests do not establish full-board drop or thermal-cycle lifetime. Curves alone cannot prove pad cratering; examine fracture surfaces/sections.
What to prepare
BLNKK suggests documenting dimensions, materials/process, tool height, direction, speed and fixture, with consistent classification and controls.
Confirm with the supplier
Confirm acceleration clearance, transducer/adapter, calibration, sampling and energy analysis, plus correlation between representative specimens and board-level tests.
Public evidence: The linked sheet specifies shear up to 4 m/s and pre/post-peak energy; technical text describes failure-curve comparison.

Supporting references

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