TDK Corporation announced a new series of rugged EPCOS axial-lead aluminum electrolytic capacitors for automotive electronics. These components are distinguished by very high ripple current capability and vibration resistance. As a result of the very low ESR values and a further reduction in internal thermal resistance, the self-heating of the new B41689* series is significantly lower, allowing the ripple current capability to be increased by 50% compared to standard axial-lead series. As a result, fewer parallel connected capacitors are required for extreme requirements, which not only helps reduce costs but also increases reliability. This series of axial-lead capacitors achieves the same ripple current capability of single-ended capacitors with 60 percent less volume.
These new capacitors are designed for a temperature range from -55o C to +150o C and offer a useful life of 10,000 hours at 125o C. They have rated voltages of 25 V DC, 40 V DC, and 63 V DC. Their capacitance range extends from 270 µF to 4500 µF.
The optimized mechanical design of these capacitors allows high vibration stability of up to 40 g. All types of the new series are available in various mechanical designs, such as soldering star or axial-lead capacitors with double-sided plates.
Applications include engine management and fuel-injection systems, gearbox controllers, power steering systems, as well as control units for fans, windshield wipers, and oil and water pumps. All types are available in RoHS-compatible versions.
For more information, go to www.epcos.com/alu_axial.
