Organic Polymer Capacitors (KO-CAP®) deliver long life and stable performance

KEMET KO-CAPs are ideal for DC-to-DC converter applications which require high capacitance, low ESR, low profile and small footprint for hardware that seeks long life and stable performance.

Features:

  • Extremely low ESR (4-100 mOhms)
  • High capacitance (6.8-1500μF)
  • Low profile (0.9-4.3 mm)
  • Up to 75 V Ratings
  • 105°C and 125°C temperature ratings
  • Surge robust
  • High ripple handling
  • 100% electrical tested
  • Highest delivered capacitance (no biased, dry-out or temperature effects)
  • Highest volumetrically efficient technology
  • Long life with no wear-out mechanism (will outlast nearly all hardware applications)
  • RoHS compliant/halogen-free

Applications:

  • DC-to-DC converter (1 V to 48 V)
  • Hold-up capacitance (SSD back-up energy)
  • Consumer, industrial, enterprise, telecomm, medical, avionics, automotive and military series available

Browse each series for more information

T520 Low ESR Polymer Electrolytic, 2 – 10 VDC

T520 Low ESR Polymer Electrolytic

The T520 Low ESR Polymer Electrolytic provides the widest range of voltage, capacitance and case size options in the KO-CAP family. Suitable for general purpose DC applications up to 10 volts, the T520 is ideal for DC-to-DC converters, bulk decoupling and hold-up.

Features

  • Extremely-low ESR
  • Volumetrically efficient
  • High frequency capacitance retention
  • 100% accelerated steady state aging
  • 100% surge current tested
  • EIA standard case sizes
  • Halogen-Free Epoxy/RoHS compliant
T520 Product Page

T521 High-Voltage Polymer Electrolytic, 16 – 63 VDC

T521 High-Voltage Polymer Electrolytic

The T521 High-Voltage Polymer Electrolytic is designed for higher application voltages than the T520 KO-CAP. They were developed for use on 12, 24, 28 and 48 volt DC voltage rails. The low ESR of the T521 provides high ripple current capability. KO-CAP's long-life reliability enables the T521 to be an ideal alternative to liquid-based electrolytic capacitors

Features

  • Low ESR
  • Volumetrically efficient
  • Stable temperature characteristics
  • High ripple current capability
  • High reliability
  • 100% surge current tested
  • Low profile design
  • Halogen-Free Epoxy/RoHS compliant
T521 Product Page

T528 Low ESL Polymer Electrolytic for CPU/GPU Decoupling

T528 Low ESL Polymer Electrolytic for CPU/GPU Decoupling

The T528 Low ESL Facedown Terminal Polymer Electrolytic combines ultra-low ESR and high capacitance in a package design that offers the lowest ESL in the market. This series offers exceptional performance for high-speed microprocessor, FPGA or ASIC decoupling designs. The T528 Series utilizes a unique termination design that allows for a reduction in the inductance loop area and comes in 1.5 to 2 mm case heights. This capacitor series offers improved capacitance retention at frequencies of up to 1 MHz.

Features

  • Low ESL <0.7 nH @ 20 MHz
  • Improved volumetric efficiency
  • High frequency capacitance retention
  • 100% accelerated steady state aging
  • 100% surge current tested
  • EIA standard case sizes
  • Halogen-Free Epoxy/RoHS compliant
  • Lead-free 260°C reflow capable
T528 Product Page

T598 High Performance Automotive Grade Polymer Electrolytic, 6.3 – 16 VDC

T598 High Performance Automotive Grade Polymer Electrolytic

The T598 High Performance Automotive Grade Polymer Electrolytic was developed to deliver higher reliability and stability under harsh environmental conditions. Special enhancements to the design and material were introduced to deliver 1,000 hours under 85°C/85% RH/VR and to fully comply with AEC-Q200 Qualification Testing. The T598 is manufactured in an ISO TS 16949 certified plant and is subjected to PPAP/PSW and change control.

Features

  • Ultra-low ESR
  • Complies with AEC-Q200 Qualification Test Plan
  • High reliability up to 1,000 hours with 85°C/85% RH load
  • TS 16949 certified plant
  • Subject to PPAP/PSW and Change Control
  • Meets or exceeds EIA standard 535BAAC
  • Taped and reeled per EIA 481
  • Halogen-free epoxy/RoHS compliant
T598 Product Page

T591 High Temperature/High Humidity Polymer Electrolytic, 2.5 – 50 VDC

T591 High Performance Automotive Grade Polymer Electrolytic

The T591 High Temperature/High Humidity Polymer Electrolytic delivers higher capacitance and ESR stability under harsh environmental conditions. Enhancements to the design and selected material upgrades render this the first KO-CAP capable of stable performance after 500 hours at 85°C/85% RH/VR. The T591 is manufactured in a ISO TS 16949 certified plant. Parts are available with PPAP/PSW and change control.

Features

  • Ultra-low ESR
  • Qualification package complies with most AEC-Q200 Test requirements
  • High reliability up to 500 hours with 85°C/85% RH load
  • TS 16949 certified plant
  • Meets or exceeds EIA standard 535BAAC
  • Taped and reeled per EIA 481
T591 Product Page

T530 High Capacitance Low ESR Polymer Electrolytic, 125°C, 2.5 – 16 VDC

T530 High Capacitance Low ESR Polymer Electrolytic

The T530 High Capacitance Polymer Electrolytic expands the capacitance ranges of the T520 KO-CAP with a higher 125°C operating temperature and lower ESR options. The improved ESR levels allow for higher ripple current capability than the T520. The T530's reduced ESR, ripple current capability and capacitance retention at higher frequencies provide the lowest total capacitance and most economical solution for high switching frequency DC power applications.

Features

  • Extremely-low ESR
  • Volumetrically efficient
  • High frequency capacitance retention
  • 100% accelerated steady state aging
  • 100% surge current tested
  • Utilizes multiple tantalum anode technology
  • EIA standard case sizes
  • Halogen-Free Epoxy/RoHS compliant
T530 Product Page

T525 Polymer Electrolytic 125°C, 2 – 16 VDC

T525 Polymer Electrolytic 125°C

The T525 Polymer Electrolytic is rated for 125°C operating temperatures, extending the category temperature of the standard T520 KO-CAP. The T525 delivers a higher temperature rating for applications that may exceed 105°C, while still offering the same advantages such as low ESR, high frequency capacitance retention, long life and stable capacitance as other KO-CAPs.

Features

  • Extremely-stable ESR at 125°C
  • Volumetrically efficient
  • High frequency capacitance retention
  • 100% surge current tested
  • EIA standard case sizes
  • Halogen-Free Epoxy/RoHS compliant
T525 Product Page

T545 Polymer Electrolytic (KO-CAP®), 6.3 – 35 VDC

T545 High Energy Storage Polymer Electrolytic

KEMET's Organic Capacitors (KO-CAP) are preferred solutions for applications requiring power loss protection (hold-up) or maximum power efficiency of a circuit when board space is limited. Desired benefits include high energy density, stable capacitance with applied voltage and temperature, and no aging effects. The conductive polymer cathode of these solid electrolytic capacitors provide very low ESR and higher capacitance retention at high frequencies. Unlike liquid electrolyte-based capacitors, KEMET's polymer capacitors have a very long operational life and high ripple current capabilities. Capacitors from T520, T521 and T523 series are commonly used in these applications. The T545 and T548 series were introduced to meet specific needs for a subsegment of solid state drives.

Features

  • Highest energy per unit volume
  • Stable capacitance across temperature and voltage
  • No aging effects
  • Low ESR values
  • High frequency capacitance retention
  • High ripple handling
  • 100% accelerated steady state aging
  • 100% surge current tested
  • 100% thermal shock
  • Halogen-Free Epoxy/RoHS compliant
T545 Product Page

T523 Series Polymer Electrolytic Capacitors

T523 Series Polymer Electrolytic Capacitors

KEMET's organic capacitors (KO-CAP®) are a solid electrolytic capacitor with a conductive polymer cathode capable of delivering very low ESR and improved capacitive retention at high frequencies. KO-CAP combine the low ESR of multilayer ceramic, the high capacitance of aluminum electrolytic, and the volumetric efficiency of tantalum into a single surface-mount package. Unlike liquid electrolyte-based capacitors, KO-CAP have a very long operational life and high ripple current capability.

Features

  • Highest capacitance (or energy) per unit volume
  • Low profile (1.2 mm to 2.0 mm)
  • Low ESR / high ripple current handling
  • High frequency capacitance retention
  • Stable capacitance across temperature and voltage
  • 100% accelerated steady-state aging
  • 100% surge current testing
  • Halogen-free epoxy/RoHS compliant
T523 Product Page

T527 Facedown Polymer Electrolytic

T527 Facedown Polymer Electrolytic

The T527 Miniature Polymer Electrolytic utilizes a facedown terminal technology that combines packaging efficiency with a low-profile component. This series offers high capacitance in a 3216-10 (3.2 mm (L) x 1.6 mm (W) x 1.0 mm (H)) package size. The T527 is ideal for use in densely populated circuits such as smart phones and digital cameras where space restrictions do not allow for larger and more commonly available high capacitance case sizes.

Features

  • EIA Case Size: 3216 (1206 MLCC Equivalent)
  • Low Profile: 1.0 mm maximum
  • Lead-free 260°C reflow capable
  • Improved volumetric efficiency
  • Halogen-Free Epoxy/RoHS compliant
T527 Product Page

T529 Small Case Substrate Terminal Polymer Electrolytic

T529 Small Case Substrate Terminal Polymer Electrolytic

The T529 Small Case Substrate Terminal Polymer Electrolytic design results in the most volumetrically efficient packaging technology available today in polymer electrolytic chip capacitors. This series offers high capacitance values in a small 2012-10 (2.0 mm (L) x 1.2 mm (W) x 1.0 mm (H)) package size. The T529 Series is ideal for use in densely populated circuits such as smartphones and digital cameras where space restrictions do not allow for larger and more commonly available case sizes.

Features

  • Substrate Termination
  • EIA Case Size: 2012 (0805 MLCC Equivalent)
  • Low Profile: 1.0 mm maximum
  • Improved volumetric efficiency
  • Halogen-Free Epoxy/RoHS compliant
  • Lead-free 260°C reflow capable
T529 Product Page

T540/T541 COTS Polymer Electrolytic for High Reliability Applications, 2.5 – 63 VDC

T540/T541 COTS Polymer Electrolytic for High Reliability Applications

The T540/T541 COTS Polymer Electrolytic offers the same performance advantages as other KO-CAP series with screening options associated with high reliability ("Hi-Rel") applications. These Commercial-Off-The-Shelf (COTS) grade components are built with a tin-lead (SnPb) termination finish and offer several surge current screening options. The recommended application derating for these capacitors is 10 – 20%, rendering them suitable for application voltages from 2.25 to 50 VDC.

Features

  • Approved for DLA Drawing 04051/04052
  • B, C and D failure rates available
  • High frequency capacitance retention
  • Surge current testing options
  • Volumetrically efficient
  • Low ESR
  • EIA standard case sizes
  • 100% accelerated steady state aging
  • KEMET's PERA method testing

T540/T541 Product Page


T543 COTS Polymer Electrolytic, 2.5 - 63 VDC

T540/T541 COTS Polymer Electrolytic for High Reliability Applications

The T543 (COTS Polymer Electrolytic) is standard KO-CAP product screened at higher specifications using in-house testing frequently requested by aerospace, automotive, and military industries.  Rated up to 105°C operating temperature, these capacitors are suitable for applications ranging from 1 V to 50 V and have the desired benefits of polymer - - low ESR, high frequency capacitance retention, long operational life, and high ripple current capability.  Manufactured in the U.S., specialty-focused facility, this product offers a viable, sustainable, and cost-effective solution for customers seeking additional assurance in performance.  This series currently offers surge current (10 cycles at +25°C, 10 cycles at –55°C / +85°C) and termination finish (100% Sn, Sn/Pb) options. Customized testing and material sets can be provided upon request.

Features

  • Extremely low ESR
  • High frequency capacitance retention
  • 100% accelerated steady state aging
  • 100% surge current tested
  • Taped and reeled per EIA 481
  • Volumetrically efficient
  • Surge options at 25ºC and -55ºC/85ºC
  • EIA standard case sizes
  • Halogen-free epoxy/RoHS-compliant
T540/T541 Product Page