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KEMET Webinar - Challenging Designs Drive Diverse Form Factors
- 1. • What are safety capacitors? • Classification and Certification • KEMET Ceramics Offering • Key Takeaways Ceramic Business Group
- 2. • Standard Surface Mount - Base MLCC Structure • Leaded (Stacked) MLCC • Leaded Axial and Radial • KONNECT Technology Agenda
- 3. Form Factor
- 4. Ceramic Capacitors Surface Mount Non-Surface Mount Standard Surface Mount Leaded Surface Mount Radial Leaded Axial Leaded Form Factor
- 5. Key Drivers for Form Factor Mounting Location Mounting Method Reduced Placements CV Volumetric Efficiency Durability Electrical Performance Mechanical Performance Noise Performance Primary Drivers Secondary Drivers or Impact
- 6. C = e0KA(n-1) d Ideal Capacitor Structure Dielectric Electrode Distance
- 7. C = Design Capacitance K = Dielectric Constant A = Overlap Area d = Ceramic Thickness n = Number of Electrodes C = e0KA(n-1) d + - Capacitances in parallel are additive CT=C1+C2+C3+….Cn Standard Surface Mount Base MLCC Structure
- 8. Standard Surface Mount Benefits Highest Density Smallest geometry Lowest cost form factor Lowest ESR Lowest ESL
- 9. Model Parameters • C - Nominal capacitance • ESR - Series resistance • ESL - Series inductance Simplified Real Model 10pF example Standard Surface Mount Base Electrical Model Typical MLCC Inductance <1nH C ESR ESL Current Path
- 10. Standard Surface Mount Flex Cracking and CTE Mismatch Flex Cracking CTE Mismatch CTEMLCC CTEBoard
- 11. Standard Surface Mount Piezoelectricity and Electrostriction Z X Y Electrical Noise Audible Noise AC Voltage Piezoelectricity Electrical Noise Electrostriction Electrical Noise
- 12. Standard Surface Mount Available Solutions Standard Commercial C0G, U2J, X7R, X5R, X8R, X8L, Z5U, Y5V Sn & SnPb Plating Options 0201 - 2225 6.3 and 250 Vdc Automotive C0G, U2J, X7R, X5R, X8R, X8L Sn Plating Options 0402 - 2225 6.3 and 250 Vdc High Voltage (≥500V) Commercial and Automotive C0G, X7R Sn & SnPb Plating Options 0603 - 6560 500 and 5,000 Vdc High Temperature (≥150V) Commercial and Automotive C0G, X7R, X8R, X8L Sn, SnPb, and Au Plating Options 0603 - 4540 500 and 3,000 Vdc Defense and Aerospace MIL-PRF-123, 55681, 32535 C0G, X7R, BP, BX Sn, SnPb & Au Plating Options 0402 - 2220 4 and 200 Vdc Flex Mitigation Commercial, Automotive, High Voltage C0G, X7R, X8L & X8R Sn, SnPb Plating Options 0603 - 2225 6.3 and 250 Vdc
- 13. Leaded Stack MLCC Higher CV – Bulk Capacitance
- 14. Leaded Stack MLCC Benefits Higher CVs vs MLCC Compact Design Higher Power (Low ESR) Robust (Flex, Thermal Cycling, CTE, Vibration) Noise Mitigation
- 15. Leaded Stack MLCC Robust Design Flex Robust CTE Mismatch CTEMLCC CTEBoard Mechanical Absorption
- 16. Leaded Stack MLCC Piezoelectricity and Electrostriction Z X Y Electrical Noise Piezoelectricity Electrical Noise Electrostriction Electrical NoiseAudible Noise AC Voltage Mechanical Absorption
- 17. Leaded Stack MLCC Design Consideration: Size and Added Parasitics Model Parameters • C – Nominal capacitance • ESR – Series resistance • ESL – Series inductance • L1/L2 – Lead Inductance • R1/R2 – Lead Resistance Simplified Real Model Typical Inductance 1nH – 3nH C ESR ESLL1 L2 R1 R2 ESL_total = ESL + L1 + L2 ESR_total = ESR + R1 + R2 Current Path
- 18. Leaded Stack MLCC Available Solutions KPS MIL MIL-PRF-49470 B & T(space) Levels SMD or Thru-hole KPS+ Bulk Capacitance Footprint reduction SMD or Thru-hole Hi Volt / Temp options KPS Commercial and AUTO AEC-Q200 qualified 1 or 2-chip stacks, SMD 1210 – 2220 footprints 10V – 250 Vdc KPS HV Commercial & Automotive Grades 1 or 2-chip stacks, SMD 2220 footprint, J Lead 500 and 630 Vdc KPS X8L High Temperature 150ºC Commercial & Automotive Grades 1 or 2-chip stacks, SMD 1210 and 2220 footprint, J Lead KPS SnPb Commercial Grade 1 or 2-chip stacks, SMD 1210 and 2220 footprint, J Lead Defense, Avionic & Industrial applications KPS HV SM Series Industrial Grade C0G and X7R Dielectrics L and J Lead 500 and 10kV Vdc KPS-MCC SMPS Stacks Industrial Grade C0G L and J Lead 50 and 20kV Vdc
- 19. Axial and Radial Leaded Benefits No PCB Required! Flex Mitigation Noise Reduction Highly Versatile Mounting High Vibration
- 20. Axial and Radial Leaded No-PCB Required
- 21. Axial and Radial Leaded No-PCB Required EGR ValveEGR Valve MotorsMotors
- 22. Axial and Radial Leaded Highly Versatile Mounting Hand Solder Conductive adhesive Weld Crimp
- 23. Axial and Radial Leaded Robust Design Flex Cracking CTE Mismatch CTEMLCC CTEBoard Mechanical Absorption
- 24. AC Voltage Axial and Radial Leaded Piezoelectricity and Electrostriction Z X Y Electrical Noise Piezoelectricity Electrical Noise Electrostriction Electrical Noise Mechanical Absorption
- 25. Axial and Radial Leaded Design Consideration: Added Parasitics Model Parameters • C – Nominal capacitance • ESR – Series resistance • ESL – Series inductance • L1/L2 – Lead Inductance • R1/R2 – Lead Resistance Simplified Real Model Typical Inductance ~10nH for ½” lead wire C ESR ESL L1 L2R1 R2 ESL_total = ESL + L1 + L2 ESR_total = ESR + R1 + R2
- 26. Axial and Radial Leaded Available Solutions Product Series C0G X7R Z5U Commercial Auto Grade Commercial Auto Grade Commercial Goldmax Radial Conformal Coated C3XX 25 – 250Vdc 1.0pF –470nF 25 – 250Vdc 1.0pF– 220nF 25 – 250Vdc 100pF – 10 µF 25 – 250Vdc 100pF – 10 µF 25 – 200Vdc 100pF – 10 µF Aximax Axial Conformal Coated C4XX 25 – 250Vdc 1.0pF –470nF 25 – 250Vdc 1.0pF –100nF 25 – 250Vdc 10pF – 10µF 25 – 250Vdc 10pF – 4.7µF 50 – 200Vdc 1.0nF – 2.2µF Radial Molded C052/56 C062/66 C512/C522 50 – 200Vdc 1.0pF –180nF 50 – 200Vdc 10pF – 3.3µF Axial Molded C114/C124 C192/C202 C222 50 – 200Vdc 1.0pF –100nF 50 – 200Vdc 10pF – 3.3µF
- 27. Axial and Radial Leaded Available Solutions Product Series X8R X8L Goldmax Radial Conformal Coated C31X C32X C33X 25 – 200Vdc 1.0pF – 33nF 10pF – 180nF 56nF – 220nF 25 – 50Vdc 150nF – 680nF 150nF – 4.7µF – Aximax Axial Conformal Coated C41X C43X 50 – 200Vdc 100 pF – 22nF 1.1nF – 82nF 25 – 50Vdc 100nF – 0.68µF 330nF – 2.2µF Currently Available
- 28. Axial and Radial Leaded Available Solutions Series C0G X7R Commercial C3xx C6xx 1.0pF – 100nF 500 – 3000V 10pF – 2.9µF 500 – 3000V Industrial HV20-36 10pF – 330nF 500 – 10,000V 150pF – 5.6µF 500 – 10,000V Military Tested HV60-66 HS20-36 (space) 12pF – 180nF 500 – 10,000V 820pF – 5.6µF 500 – 10,000V High Temperature 200ºC HV10-16 VCR/VRR 10pF – 47nF 500 – 5000V 680pF – 1.2µF 500 – 5000V
- 29. KEMET KONNECT Technology Under Development Low Power LossTraditional
- 30. Thank You!!! Mark R. Laps Technical Product Manager Ceramic Business Unit KEMET Electronics Cell Phone: +1-864-399-4879 Office Phone: +1-864-963-6383 www.kemet.com | marklaps@kemet.com