T551 Tantalum Polymer Capacitors – Hermetically Sealed
2021-08-10
The T551 axial leaded and T556 surface mount polymer hermetically sealed(PHS) devices are tantalum capacitors with a Ta anode and Ta₂O₅ dielectric. A conductive, organic polymer replaces the traditionally used MnO₂ or wet electrolyte as the cathode plate of the capacitor. The result is very low ESR and improved capacitance retention at high frequency and low temperature. The PHS device also exhibits a benign failure mode, which eliminates the case breach that can occur in wet tantalum capacitors. Additionally, the 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.
PHS capacitors molded also offer 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, these parts provide 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
●Maximum operating temperature of +125°C
●Polymer cathode technology
●≤0.0075 CV (μA) at rated voltage after 5 minutes
●Extremely low ESR
●High frequency and low temperature capacitance retention
●100% constant voltage conditioning (240 hours)
●100% surge current tested
●Volumetrically effcient
●Use at up to 80% of rated voltage
●Non-ignition failure mode
●Approximately 25% lighter than equivalent wet tantalum
●T551 case dimensions equivalent to
MIL-PRF -39006/22/25/30/31
●T556 surface mount design (see dimensions diagram)
PHS capacitors molded also offer 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, these parts provide 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
●Maximum operating temperature of +125°C
●Polymer cathode technology
●≤0.0075 CV (μA) at rated voltage after 5 minutes
●Extremely low ESR
●High frequency and low temperature capacitance retention
●100% constant voltage conditioning (240 hours)
●100% surge current tested
●Volumetrically effcient
●Use at up to 80% of rated voltage
●Non-ignition failure mode
●Approximately 25% lighter than equivalent wet tantalum
●T551 case dimensions equivalent to
MIL-PRF -39006/22/25/30/31
●T556 surface mount design (see dimensions diagram)
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