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Electrolyte Material - Construction Comparison

 
 
 Electrolyte Material Type Comparison:
 Comparison of characteristics - performance differences of different cathode connection materials
NIC Series Type of Capacitor Cathode Connection Material Conductivity (S/cm) Conductive Mechanism Heat Resistance Performance Competition
NPC
NSP
SOLID ALUMINUM
Conductive Functional Polymer
Polypyrrole (PPy) 100 Electronic Conduction Good
 (up to +300degC)
Panasonic SP
Kemet AO-Cap
Murata ECAS
NTP TANTALUM
Polymer Cathode
Polypyrrole (PPy) Sanyo POS-Cap
Kemet KO-Cap
Nichicon "F55"
NTC-T
NTC-L
TANTALUM
Standard Cathode
MnO2 0.1 Very Good
(up to +500degC)
- Many -
NSPE ALUMINUM
Hybrid Electrolyte
  Polypyrrole (PPy) + Liquid Electrolyte 100 + 0.01 Electronic (Major) + Ionic (Minor)  Conduction Fair to Good
(Reflow to +260degC Max.)
 Panasonic ZA
Sanyo CV-EX
NAC_ ALUMINUM
Liquid Electrolyte
Ethylene Glycol (EG)
& Gamma-Butyolactone (GBL)
0.01 Ionic Conduction Fair to Good
(Reflow to +260degC Max.)
- Many -

NOTES:
  • The higher the conductivity value of the cathode connection material, the lower the ESR (Equivalent series resistance) of the component.

  • Electronic conduction can handle higher ripple currents than ionic conduction, due to lower ESR and faster reaction speed.

  • The failure rate (FR) of solid polymer type aluminum E-Cap is lower than that of tantalum E-Cap.

  • The polymer type aluminum is less likely to combust (flame) under short circuit failure as compared to tantalum E-Cap.

  • The failure mode is short circuit for all the above reference SOLID ALUMINUM and TANTALUM types.

  • The failure mode is open circuit for all the above reference Liquid & Hybrid Electrolyte ALUMINUM types.

  • Liquid Electrolyte ALUMINUM types have shorter life (as compared to SOLID ALUMINUM and TANTALUM types) due to dry-out of electrolyte over time - temperature.  [ more details ]

Comparison of Construction Types: Liquid - Hybrid - Solid Electrolyte
PROS & CONS Liquid Electrolyte Hybrid Electrolyte Solid Electrolyte
PROS

» Lowest Cost
» Moderately Low ESR
» Good Tolerance to Transients
» Open Circuit Failure Mode

 
» Very Low ESR
» High RCR
» Stable Over Temperature
» Moderate Cost
» Good Tolerance to Transients
» Open Circuit Failure Mode
 

 
» Lowest ESR
» Highest RCR
» Stable Over Temperature
» Long Life, No Wear-Out
 

CONS

» Limited Life @ High Temp
» Wear-Out
» Reduced performance at Low Temperature

» Limited Life @ High Temp
» Wear-Out

 
» Highest Cost
» Limited Tolerance to Transients
» Short Circuit Failure Mode
 

CONSTRUCTION
Typical 100KHz ESR & RCR
[ 100uF / 6VDC ]
ESR = 0.39ohm MAX
RCR = 0.25Arms MAX
ESR = 0.050ohm MAX
RCR = 1.12Arms MAX
ESR = 0.039ohm MAX
RCR = 2.50Arms MAX
 
NIC SERIES
 
LIQUID HYBRID SOLID

ESR = Equivalent Series Resistance (ohm)  RCR = Ripple (AC) Current Rating


 

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