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Material & Component Analysis
Material Engineering
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FTIR Spectroscopy
PCB Properties
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Thermal Analysis
Metallography
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Component Analysis
Electrical Testing
I-V Analysis
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Component Testing

Dielectric Properties - The electrical properties of laminate materials and soldermask are affected by operating environment and signal frequency.  Our laboratory can measure the dielectric constant and loss of dielectric materials at various temperatures and multiple frequencies.  The graphs below show typical output of this test.  It shows the frequency dependence of dielectric constant and loss for as received, humidified and baked laminate materials.  FR1 Single Sided laminate with and without soldermask.

Er’s Dielectric constant vs. frequency

Loss tan δ as a function of frequency
 

Capacitance Stability – Each PCB material combination behave differently to environmental conditions (temperature/Humidity) to measure stability we use an inter-digitated comb pattern which is subjected to various temperature and humidity excursions.  The capacitance of this test pattern is dynamically monitored.  The Pico-farad capacitance is measured as received, and at 85C.  Then measured after 100 hr 85C and finally after 24 hr at 95%RH.   Results provide a measure of predictable capacitance drift (ppm/oC) and per-cent change after dry and humid exposure.  This allows us to quantify the long term stability of the laminate and soldermask combination you have chosen for your design and how it will be affected by environmental conditions.
 
 
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