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
25°C
70°C
Permissible Reverse Voltage
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
Flux Zone
Preheat Zone
Exit from Solder Wave
(Time in Wave – 2 to 4 Seconds)
Hot Air Debridging
Exit from
Solder
Machine
Free
Air
Cool
250
225
200
175
150
125
100
75
50
25
Degrees – Cº
80ºC
to 120ºC
Entrance
to Solder
Machine
Bottom Side
Temperature
Range
Entrance to
In-Line Cleaner
Exit from
In-Line Cleaner
(time in cleaner
may be less)
Immersion in
Cleaning
Vapor
150ºC
Maximum
Top Side
Nominal
0
1
2
3
Time (Minutes)
4
5
6
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
with what is believed to be the industry standard. More severe treatment must be considered reflective of an improper
soldering process. The above figure is a recommended solder wave profile for both axial and radial leaded solid tantalum
capacitors.
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com
T2059_T550 • 1/12/2018
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KEMET [ KEMET CORPORATION ]
