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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.

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PCB Flexure Comparison Testing

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  1. PCB Flexure Comparison Testing NMC Standard & NMC-PSoft 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

  2. NMC vs. NMC-P in PCB Flexure Testing  PCB Flexure Comparison Testing NMC standard & NMC-PSoft Terminal Ceramic Chip Capacitor MLCCs Test PCB • 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 mm • Test Samples: n= 10 pieces • Monitor 1KHz Capacitance Value / Failure Criteria = ∆C of ≥±12.5% No failures to 10mm deflection 10 out of 10 failures by 7.0mm deflection Page 2

  3. NMC vs. NMC-P in PCB Flexure Testing  PCB Flexure Comparison Testing NMC standard & NMC-PSoft Terminal MLCCs No failures to 10mm deflection 10 out of 10 failures by 4.0mm (1206) & 9.0mm (1210) deflection Page 3

  4. NMC vs. NMC-P in PCB Flexure Testing  PCB Flexure Comparison Testing NMC standard & NMC-PSoft Terminal MLCCs No failures to 10mm deflection 10 out of 10 failures by 5.0mm deflection Page 4

  5. NMC vs. NMC-P in PCB Flexure Testing  PCB Flexure Comparison Testing NMC standard & NMC-PSoft Terminal MLCCs Cross-Sectional Analysis Comparison After de-mounting from test PCB, performed cross-sectional comparison to allow inspection of internal structure NMC Series NMC-P Series PCB flexure MLCC cracking Low IR, Short failure mode • 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) Page 5

  6. NMC vs. NMC-P in PCB Flexure Testing  Polymer Layer – Open Circuit Function Example of polymer layer terminal separation (open circuit) for NMC-P Series (Polymer Soft Terminal) under 10mm PCB deflection 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 mm Test Samples: n= 10 pieces Monitor 1KHz Capacitance Value / Failure Criteria = ∆C of ≥±12.5% DPA of Failed Sample No failures to 9mm deflection 2 out of 10 failures at 10mm deflection 10 out of 10 failures by 8.0mm deflection Page 6

  7. NMC vs. NMC-P in PCB Flexure Testing  Polymer Layer – Open Circuit Function Example of polymer layer terminal separation (open mode) for NMC-P Series (Polymer Soft Terminal) under 10mm PCB deflection Cross-Sectional Analysis Cross-Sectional Analysis Magnified view Polymer layer opened under 10mm PCB deflection Component is undamaged PCB flexure Open failure mode Page 7

  8. Resources •  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 8

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