Tantalum Through-Hole Capacitors – Hermetically Sealed
T551 Axial Polymer Hermetic Seal (PHS) 125ºC Series
Overview
The KEMET T551 Series Polymer Hermetic Seal (PHS) is a
tantalum capacitor with a Ta anode and Ta2O5ꢀdielectric.ꢀAꢀ
conductive organic polymer replaces the traditionally used MnO2
or wet electrolyte as the cathode plate of the capacitor. This
results in very low ESR and improved capacitance retention
at high frequency and low temperature. The T551 Series PHS
also exhibits a benign failure mode which eliminates the case
breachꢀthatꢀcanꢀoccurꢀinꢀwetꢀtantalumꢀtypes.ꢀAdditionally,ꢀthisꢀ
part may be operated at voltages up to 80% of rated voltage
with equivalent or better reliability than traditional MnO2 or wet
tantalum capacitors operated at 50% of rated voltage.
T551 Series PHS also offers higher ripple current handling
capability and a lower ESR range than wet tantalums. With
reduced ESR and enhanced capacitance retention at higher
frequencies and low temperatures, the T551 Series PHS provides
the highest total capacitance and the most economical solution for
high power applications, all within an approximately 25% lighter
package than the equivalent wet tantalum capacitor.
Benefits
• Includes F-Tech anode which eliminates hidden defects
in the dielectric
• 100% Simulated Breakdown Screening
• Voltage rating of 6 VDC – 60 VDC
• Capacitance: 20 µF to 820 µF
• Maximum operating temperature of +125°C
• Polymer cathode technology
•ꢀ ≤ꢀ0.0075ꢀCVꢀ(µA)ꢀatꢀratedꢀvoltageꢀafterꢀ5ꢀminutes
• Extremely low ESR
• High frequency capacitance retention
• Low temperature capacitance retention
• 100% accelerated steady state aging (240 hours)
• 100% surge current tested, 10 cycles +25°C
•ꢀ Volumetricallyꢀefficient
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• Use at up to 80% of rated voltage
• Non-ignition failure mode
•ꢀ Approximatelyꢀ25%ꢀlighterꢀthanꢀequivalentꢀwetꢀtantalum
• Case dimensions equivalent to MIL–PRF–39006/22/25/30/31
Applications
Typicalꢀapplicationsꢀincludeꢀhighꢀvoltageꢀpowerꢀmanagementꢀsuchꢀasꢀbuck/boostꢀconverters,ꢀfiltering,ꢀhold-upꢀcapacitors,ꢀandꢀotherꢀ
high ripple current applications.
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© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
T2072_T551 • 6/23/2016