1 / 8

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.

lirit
Download Presentation

PCB Flexure Comparison Testing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related