Capacitor Review Q1 - 2011.

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Presentation transcript:

Capacitor Review Q1 - 2011

1.0uF ~ 1000uF Common SMT Requirements Capacitance Offering by Technology 1.0uF ~ 1000uF Common SMT Requirements Ceramic (MLCCs) dominate lower range of capacitance values (0.5pF ~ 10uF) High Capacitance X5R MLCCs (Cap 10uF ~ 100uF) Film capacitors cover moderate cap range with increasing sizes with capacitance & voltage rating Tantalum capacitors cover 0.1uF up to 1000uF in low VDC ratings Aluminum E-Caps cover wide capacitance value range and supports higher VDC ratings. Double layer capacitors (Farad values) in use for back-up and short term power applications

SMT Capacitor Offering by Technology 1uF ~ 2200uF / 2.5VDC ~ 100VDC SMT Capacitor Offering by Technology Capacitance Voltage Range Comparison - SMT Capacitors (1uF ~ 2200uF / 2.5VDC ~ 100VDC ) Voltage 100VDC   80VDC ↑ 63VDC 50VDC 35VDC 25VDC 16VDC 12.5VDC 10VDC 8VDC 6.3VDC 4VDC 2.5VDC Capacitance 1.0uF 2.2uF 3.3uF 4.7uF 10uF 22uF 33uF 47uF 100uF 150uF 220uF 330uF 470uF 1000uF 2200uF Icon Type Format Component Image Tantalum Electrolytic SMT Flat Chip Ceramic Chip - MLCC Aluminum Electrolytic SMT V-Chip Solid Aluminum Electrolytic Use NIC QuickBUILDER Tool to easily select & compare capacitors  www.niccomp.com/quickbuilder/qb_capacitor.php

SMT Capacitor Technology Comparison SMT Flat-Chip Solid Aluminum Electrolytic SMT V-Chip Aluminum Electrolytic SMT Tantalum Electrolytic SMT MLCC Ceramic Lowest Cost High WVDC Stability Over Voltage Higher ESR Wear-out (time & temperature) Tallest – Largest Size SMT V-Chip Aluminum Electrolytic Small Size Stability Over Voltage Stable over Time Higher Cost Shorting Failure Mode Smallest Foot Print Non-Polarized Lowest ESR Unstable over Voltage (VDC) Unstable over Time (Aging) Cracking = Short Failure Mode Higher Cost – High CV SMT Tantalum Electrolytic Low ESR - High RCR Stability Over Voltage Stable over Time Higher Cost Shorting Failure Mode SMT Flat-Chip Solid Aluminum Electrolytic SMT MLCC Ceramic

Aluminum Electrolytic Tantalum Electrolytic Capacitor Technology Comparison Capacitor Type Derating Advantage Weakness Voltage Temp Pros Cons Ceramic None  Non-Polarized  Small Size  Transient Resistant  Low Cost  Large Voltage Coefficient & Aging (X7R, X5R, Y5V)  Limited cap range  Short failure mode (Typ) Film  Stability: Voltage & Temp  Large Size  Higher Cost  Limited Soldering Heat Aluminum Electrolytic  High Cap & High VDC  Surge VDC Resistant  Self Healing  Open failure mode (Typ)  Stability: Voltage  Polarized  Limited Lifetime Tantalum Electrolytic Yes  Long Lifetime  Small Sizes  Low VDC  Limited surge resistance 5

Aluminum Electrolytic Tantalum Electrolytic Capacitor Use Comparison Capacitor Type Sweet Spots Reasons Applications Not suggested Where most commonly used Why preferred Ceramic Capacitance values up to 10uF Coupling, filtering and bypass High Voltage (low cap values) High Frequency (low ESL) Small hand-held DC-DC Lowest Cost (C<10uF) Lowest ESL Low ESR Smallest size  AC Line (Limited to safety agency certified versions)  X7R, X5R & Y5V: Circuits requiring stability over VDC, temp or time  A to D conversion  Audiophile, Test & Inst Film High power applications AC Line Motor start Impedance matching A to D conversion Audiophile, Test & Inst High power capabilities Self healing of metallized types  Cost factor prohibits use of film capacitors from use in many applications Aluminum Electrolytic Capacitance values above 1uF Linear & HV Power Supplies Bulk storage Filtering & Bypass Lowest Cost (C>10uF, V>16VDC) Tolerance to surges  Timing Applications  VAC applications  Avionics  Harsh Environments Tantalum Electrolytic Small Hand-Held Small size No wear out Low Cost  Input circuits of power supplies (AC-DC & DC-DC) 6

Sweet Spots: Case Sizes & Tolerances: SMT Capacitor Sweet Spots Sweet Spots: Case Sizes & Tolerances: Device Type Sweet Spot Package Sweet Spot Tolerances Notes SMT Capacitors MLCC 0402 0201  0603 ≥ 0805  NPO = 5% (J) X7R = 10% (K) High Cap X5R = 10% (K) & 20% (M) Y5V = +80%/-20% (Z) X5R (1uF ~ 100uF) X7R (0.01uF ~ 1uF) Y5V for non critical applications Film 0805 & 1206 2% (G) & 5% (J) PPS film best choice for SAC Alloy reflow soldering Alum E-cap 5x5.5 6.3x6.3 6.3x8 20% is suggested tolerance Long LT on larger sizes (>8mm diameter) limited global capacity Tant J, P, A, A2 reduced sizes 10% (K) & 20% (M) High Cap >10uF Lower profile and stability over MLCCs Trends - Suggestions X5R dominates ≥1uF, X7R limited to higher VDC ratings Avoid use of tolerances tighter than shown above Use Alum E-caps over Tant E-caps in higher voltage (and transient risky) applications Use film caps only when performance requirements warrant

Tantalum Material Cost >200% increase over last 12 months Material Costs Trend: Tantalum E-Caps Tantalum Material Cost >200% increase over last 12 months Price Index 2009 2010

Suggestions to Mitigate Potential Tantalum Capacitor Issues: Capacitor Options Suggestions to Mitigate Potential Tantalum Capacitor Issues: … Price Increases and , or Shortages: Plan and purchase as early as possible Consider switch to reduced case size tantalum electrolytic capacitors as less price increase expected & larger production capacity in smaller case sizes Consider use of liquid electrolyte aluminum electrolytic capacitors for high capacitance & high voltage (VDC) replacements; “V-Chip” For large (D-V-E case sizes; 7343 size*) consider use of solid polymer aluminum electrolytic capacitors in same case size (* fit same PCB foot print & land pads) Consider use of MLCCs (X5R) for low capacitance & low voltage replacements Contact NIC to review your requirements [ NIC technical support tpmg@niccomp.com ]

For SMT Tantalum Capacitors MLCCs replacements For SMT Tantalum Capacitors SMT Tantalum Cap Specifications: www.niccomp.com/catalog/ntct.pdf  X7R MLCC Cap Specifications: www.niccomp.com/catalog/nmc2.pdf Please Note The Following: High capacitance MLCCs (such as those listed below) will exhibit capacitance change with applied voltage, over temperature, over time and may exhibit piezoelectric properties not seen with tantalum electrolytic capacitors. Please review your application with NIC technical support @ tpmg@niccomp.com Common 1.0uF C-V Sizes Cap Code Cap Voltage Size Code Size English Size Metric NIC TANTALUM PN Alternative NIC MLCC PN Notes 105 1.0uF 10VDC P 0805 2012 NTC-T105K10TRPF NMC0805X7R105K10TRPF Same Size, Same CV A2 1206 3216 NTC-T105M10TRA2F NMC1206X7R105K16TRPF Same Size, Higher VDC 16VDC J 0603 1608 NTC-T105M16TRJF NMC0603X7R105K16TRPF A NTC-T105K16TRAF 20VDC NTC-T105K20TRAF NMC1206X7R105K25TRPLP3KF 25VDC NTC-T105K25TRAF 35VDC NTC-T105K35TRAF NMC1206X7R105K50TRPLPF B 1411 3528 NTC-T105K35TRBF NMC1210X7R105K100TRPLP1K Smaller Size, Higher VDC 50VDC C 2412 6032 NTC-T105K50TRCF SMT MLCC Ceramic SMT Tantalum Electrolytic Replace With

 www.niccomp.com/quickbuilder/qb_capacitor.php Compare Capacitors  www.niccomp.com/quickbuilder/qb_capacitor.php NIC QuickBUILDER Component selection and comparison tool / Provides comparison of different type capacitors Such as comparing tantalum electrolytic to aluminum electrolytic, or MLCC ceramic capacitors Example below shows 47uF, 10VDC comparison; MnO2 cathode tantalum, Polymer cathode tantalum & X5R ceramic MLCC

Contact NIC to review your requirements Need Help? Contact NIC to review your requirements [ NIC technical support tpmg@niccomp.com ]