Aluminum Electrolytic Caps Rated for Continuous Operation to 135°C

TDK Corporation has developed a new series of EPCOS single-ended aluminum electrolytic capacitors that feature a particularly compact design, a high CV product and high ripple current capability. The capacitors of the B41897 series are available for rated voltages of between 25Vdc and 75Vdc and cover a capacitance range from 270µF to 12,000µF.

The dimensions of the new components range from 12.5mm x 20mm to 18mm x 40mm (d x l) depending on the voltage and capacitance.

Thanks to the use of improved materials, the new capacitors can be exposed to high temperatures and are designed for continuous operation at up to 135°C and for a peak temperature of 150°C. In comparison with previous series, it has been possible to increase the ripple current capability while at the same time raising the capacitance by as much as 60 percent. This means that the maximum ripple current capability is now higher than 7 A at 125°C and 100kHz.

These high-current, high-temperature capacitors were introduced this week in Munich, Germany, during the electronica trade fair. Typical applications include automotive ECUs and power supplies.

Summary of features and benefits

• High continuous operating temperature of up to 135°C and peak temperature of 150°C
• Compact dimensions ranging from 12.5mm x 20mm to 18mm x 40mm (d x l)
• High ripple current capability