Tantalum Through-Hole Capacitors – Hermetically Sealed
T550 Axial Polymer Hermetic Seal (PHS) 105ºC and DLA Series
Reverse Voltage
Solid tantalum polymer capacitors are polar devices and may be permanently damaged or destroyed if connected with
the wrong polarity. A small reverse voltage is permissible for time periods per the below table. KEMET can offer lower
capacitance in this voltage with higher reverse voltage capability. In addition, we continue to improve our capability for this
characteristic.
Temperature
Permissible Reverse Voltage
25°C
70°C
1 V for 8 hours Maximum
1 V for 2 hours Maximum
Optimum Solder Wave Profile
Solder Wave Peak
Temperature 260ºC
Entrance to Solder Wave
Exit from Solder Wave
(Time in Wave – 2 to 4 Seconds)
Flux Zone
Preheat Zone
Hot Air Debridging
250
225
200
175
150
125
100
75
Exit from
Solder
Machine
80ºC
Entrance to
In-Line Cleaner
Exit from
to 120ºC
Free
Air
Cool
In-Line Cleaner
(time in cleaner
may be less)
Bottom Side
Temperature
Range
Entrance
to Solder
Machine
Immersion in
Cleaning
Vapor
150ºC
Maximum
Top Side
Nominal
50
25
0
1
2
3
4
5
6
Time (Minutes)
Mounting
All encased capacitors will pass the Resistance to Soldering Heat Test of MIL–STD–202, Method 210, Condition C. This test
simulates wave solder of topside board mount product. This demonstration of resistance to solder heat is in accordance
withꢀwhatꢀisꢀbelievedꢀtoꢀbeꢀtheꢀindustryꢀstandard.ꢀMoreꢀsevereꢀtreatmentꢀmustꢀbeꢀconsideredꢀreflectiveꢀofꢀanꢀimproperꢀ
solderingꢀprocess.ꢀTheꢀaboveꢀfigureꢀisꢀaꢀrecommendedꢀsolderꢀwaveꢀprofileꢀforꢀbothꢀaxialꢀandꢀradialꢀleadedꢀsolidꢀtantalumꢀ
capacitors.
8
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
T2059_T550 • 1/12/2018
KEMET [ KEMET CORPORATION ]
