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T550B687K008AT4251

Description
CAP TANT POLY 680UF 8V AXIAL
CategoryPassive components   
File Size896KB,16 Pages
ManufacturerKEMET
Websitehttp://www.kemet.com
Environmental Compliance
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T550B687K008AT4251 Overview

CAP TANT POLY 680UF 8V AXIAL

T550B687K008AT4251 Parametric

Parameter NameAttribute value
capacitance680µF
Tolerance±10%
Voltage - Rated8V
typeseal
ESR (equivalent series resistance)-
Operating temperature-55°C ~ 105°C
Service life at different temperatures2000 hours at 85°C
Installation typeThrough hole
Package/casingAxial
size/dimensions0.281" diameter x 0.641" length (7.14mm x 16.28mm)
Height - Installation (maximum)-
lead spacing-
Manufacturer size codeB
grade-
characteristicUniversal
Tantalum Polymer Capacitors – Hermetically Sealed
T550 Axial & T555 Surface Mount 105°C
Overview
The KEMET T550 axial leaded and T555 surface mount
polymer hermetically sealed (PHS) devices are tantalum
capacitors with a Ta anode and Ta
2
O
5
dielectric. A
conductive organic polymer replaces the traditionally
used MnO
2
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 PHS device also exhibits a benign failure
mode, which eliminates the case breach that can occur
in wet tantalum capacitors. Additionally, this part may
be operated at voltages up to 80% of rated voltage, with
equivalent or better reliability than traditional MnO
2
or wet
tantalum capacitors operated at 50% of rated voltage.
PHS capacitors 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 +105°C
• DLA drawing 13030 qualified parts available
• Polymer cathode technology
• Extremely low ESR
• High frequency and low temperature capacitance retention
• 100% constant voltage conditioning (240 hours)
• 100% surge current tested
• Volumetrically efficient
• Non-ignition failure mode
• Approximately 25% lighter than equivalent wet tantalum
• T550 case dimensions equivalent to
MIL-PRF-39006/22/25/30/31
• T555 surface mount design (see dimensions diagram)
Applications
Typical applications include high voltage power management, such as buck/boost converters, filtering, hold-up capacitors,
and other high ripple current applications.
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
T2059_T550 • 6/26/2018
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