PCB Flexure Comparison Testing

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PCB Flexure Comparison Testing NMC Standard & NMC-P Soft Terminal Ceramic Chip Capacitor MLCCs.  Ceramic Capacitors www.niccomp.com/ceramic Specification : NMC-P series www.niccomp.com/catalog/nmcp.pdf FREE Samples : www.niccomp.com/samples Technical Support : tpmg@niccomp.com. - PowerPoint PPT Presentation

Text of PCB Flexure Comparison Testing

  • PCB Flexure Comparison Testing NMC Standard & NMC-P Soft Terminal Ceramic Chip Capacitor MLCCs Ceramic Capacitors www.niccomp.com/ceramic Specification: NMC-P series www.niccomp.com/catalog/nmcp.pdf FREE Samples: www.niccomp.com/samples Technical Support: tpmg@niccomp.com

  • NMC vs. NMC-P in PCB Flexure Testing PCB Flexure Comparison Testing NMC standard & NMC-P Soft Terminal Ceramic Chip Capacitor MLCCs PCB Deflection: 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm, 7.0 mm, 8.0 mm, 9.0 mm, 10.0 mmTest Samples: n= 10 pieces Monitor 1KHz Capacitance Value / Failure Criteria = C of 12.5%10 out of 10 failures by 7.0mm deflectionNo failures to 10mm deflectionPage * Test PCB

    Case Size(Cap / Voltage)PCB DeflectionPercentage FailuresNMC Series(Standard Terminal)NMC-P Series (Polymer Soft Terminal)PN: NMC0805X7R104K100PN: NMC-P0805X7R104K1000805(0.1uF / 100V)1.0 mm0 / 10 (No Failures)0 / 10 (No Failures)1.5 mm0 / 10 (No Failures)0 / 10 (No Failures)2.0 mm0 / 10 (No Failures)0 / 10 (No Failures)3.0 mm10% 0 / 10 (No Failures)4.0 mm30%0 / 10 (No Failures)5.0 mm80%0 / 10 (No Failures)6.0 mm90%0 / 10 (No Failures)7.0 mm100%0 / 10 (No Failures)8.0 mm100%0 / 10 (No Failures)9.0 mm100%0 / 10 (No Failures)10.0 mm100%0 / 10 (No Failures)

  • NMC vs. NMC-P in PCB Flexure Testing PCB Flexure Comparison Testing NMC standard & NMC-P Soft Terminal MLCCs 10 out of 10 failures by 4.0mm (1206) & 9.0mm (1210) deflectionNo failures to 10mm deflectionPage *

    Case Size(Cap / Voltage)PCB DeflectionPercentage FailuresNMC Series(Standard Terminal)NMC-P Series (Polymer Soft Terminal)PN: NMC0805X7R104K100PN: NMC-P0805X7R104K1001206(0.01uF / 500V)PN: NMC1206X7R103K500PN: NMC-P1206X7R103K5001.0 mm0 / 10 (No Failures)0 / 10 (No Failures)1.5 mm0 / 10 (No Failures)0 / 10 (No Failures)2.0 mm20%0 / 10 (No Failures)3.0 mm80%0 / 10 (No Failures)4.0 mm100%0 / 10 (No Failures)5.0 mm100%0 / 10 (No Failures)6.0 mm100%0 / 10 (No Failures)7.0 mm100%0 / 10 (No Failures)8.0 mm100%0 / 10 (No Failures)9.0 mm100%0 / 10 (No Failures)10.0 mm100%0 / 10 (No Failures)1210(1.0uF /100V)PN: NMC1210X7R105K100PN: NMC-P1210X7R105K1001.0 mm0 / 10 (No Failures)0 / 10 (No Failures)1.5 mm0 / 10 (No Failures)0 / 10 (No Failures)2.0 mm0 / 10 (No Failures)0 / 10 (No Failures)3.0 mm0 / 10 (No Failures)0 / 10 (No Failures)4.0 mm0 / 10 (No Failures)0 / 10 (No Failures)5.0 mm0 / 10 (No Failures)0 / 10 (No Failures)6.0 mm0 / 10 (No Failures)0 / 10 (No Failures)7.0 mm10%0 / 10 (No Failures)8.0 mm50%0 / 10 (No Failures)9.0 mm100%0 / 10 (No Failures)10.0 mm100%0 / 10 (No Failures)

  • NMC vs. NMC-P in PCB Flexure Testing PCB Flexure Comparison Testing NMC standard & NMC-P Soft Terminal MLCCs 10 out of 10 failures by 5.0mm deflectionNo failures to 10mm deflectionPage *

    Case Size(Cap / Voltage)PCB DeflectionPercentage FailuresNMC Series(Standard Terminal)NMC-P Series (Polymer Soft Terminal)2220(2.2uF / 25V)PN: NMC2220X7R225K25PN: NMC-P1206X7R225K251.0 mm0 / 10 (No Failures)0 / 10 (No Failures)1.5 mm0 / 10 (No Failures)0 / 10 (No Failures)2.0 mm20%0 / 10 (No Failures)3.0 mm60%0 / 10 (No Failures)4.0 mm90%0 / 10 (No Failures)5.0 mm100%0 / 10 (No Failures)6.0 mm100%0 / 10 (No Failures)7.0 mm100%0 / 10 (No Failures)8.0 mm100%0 / 10 (No Failures)9.0 mm100%0 / 10 (No Failures)10.0 mm100%0 / 10 (No Failures)

  • NMC vs. NMC-P in PCB Flexure Testing PCB Flexure Comparison Testing NMC standard & NMC-P Soft Terminal MLCCs PCB flexure MLCC crackingLow IR, Short failure modePage * Cross-Sectional Analysis Comparison After de-mounting from test PCB, performed cross-sectional comparison to allow inspection of internal structure

    Summary: All standard terminal (NMC series) samples exhibited failure under PCB flexure testing Failure mode defined as capacitance decrease 12.5% and low insulation resistance (IR) Cracking in ceramic microstructure (as shown in above image, left) is cause of the failure None of the NMC-P series (polymer soft terminal) exhibited failure No cracking was observed in NMC-P series (polymer soft terminal) NMC SeriesNMC-P Series

  • NMC vs. NMC-P in PCB Flexure Testing Polymer Layer Open Circuit FunctionExample of polymer layer terminal separation (open circuit) for NMC-P Series (Polymer Soft Terminal) under 10mm PCB deflectionPCB Deflection: 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm, 7.0 mm, 8.0 mm, 9.0 mm, 10.0 mmTest Samples: n= 10 piecesMonitor 1KHz Capacitance Value / Failure Criteria = C of 12.5%10 out of 10 failures by 8.0mm deflectionNo failures to 9mm deflection2 out of 10 failures at 10mm deflectionDPA of Failed SamplePage *

    Case Size(Cap / Voltage)PCB DeflectionPercentage FailuresNMC Series(Standard Terminal)NMC-P Series (Polymer Soft Terminal)1812(0.47uF / 250V)PN: NMC1812X7R474K250PN: NMC-P1812X7R474K2501.0 mm0 / 10 (No Failures)0 / 10 (No Failures)1.5 mm0 / 10 (No Failures)0 / 10 (No Failures)2.0 mm0 / 10 (No Failures)0 / 10 (No Failures)3.0 mm10% 0 / 10 (No Failures)4.0 mm40%0 / 10 (No Failures)5.0 mm70%0 / 10 (No Failures)6.0 mm80%0 / 10 (No Failures)7.0 mm90%0 / 10 (No Failures)8.0 mm100%0 / 10 (No Failures)9.0 mm100%0 / 10 (No Failures)10.0 mm100%2 / 10 (Open Circuit)

  • NMC vs. NMC-P in PCB Flexure Testing Polymer Layer Open Circuit FunctionExample of polymer layer terminal separation (open mode) for NMC-P Series (Polymer Soft Terminal) under 10mm PCB deflectionPCB flexure Open failure modePage * Cross-Sectional AnalysisCross-Sectional AnalysisMagnified view

    Polymer layer opened under 10mm PCB deflectionComponent is undamaged

  • Specification: NMC-P series www.niccomp.com/catalog/nmcp.pdf Quick Builder, component selection made easy: www.niccomp.com/QB-ceramic FREE Samples: www.niccomp.com/samples NIC Contacts: Sales support: _____________________ Technical support: tpmg@niccomp.com Page * Resources