LFA 717 HyperFlash material thermal-diffusivity measurement

NETZSCH Analyzing & Testing · Engineering measurement and characterization

Purpose: TIM comparisons and layered thermal models need traceable material diffusivity and conductivity data.
Technical approach: LFA 717 heats one specimen face with a light pulse and detects rear-face IR response. Diffusivity, specific heat and density yield conductivity.
Scope of use: Representative specimens with appropriate thickness, direction, treatment, holder and analysis model.
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
Bulk results do not establish compressed-interface/package resistance or buried-layer temperatures. Confirm low-temperature configuration and model assumptions; example values do not transfer to every TIM.
What to prepare
BLNKK suggests documenting lot, thickness, temperature/direction, treatment and heat-capacity/density evidence, plus actual assembly contact/compression conditions.
Confirm with the supplier
Confirm cooling/detector, holder, calibration, loss/pulse corrections and specific-heat method; agree how material and assembly results will be compared.
Public evidence: Official AN465 combines LFA 717, separate DSC specific heat and density for silicone TIMs, addressing phase-transition heat-capacity handling.

Supporting references

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