Epcos has unveiled a series of polymer chip capacitors as part of its development program for tantalum polymer capacitors that can operate at ambient temperatures up to 125°C and derating (66% of rated voltage).
The B4529W series follows the trend towards more modular onboard switchmode power supplies for applications in industrial electronics, networks and telecom systems.
Here large-scale integration of active and passive components in a minimum of space can lead to temperatures above 100°C.
The polymer types are currently available in cases sizes D or E with capacitances from 100 to 680 µF for rated voltages from 2.5 to 10.
Equivalent series resistance is less than 35 µW.
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