Sunday, May 19, 2024

Compact Capacitors For 450V Use

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The capacitor technology provides efficiency and enhanced safety for high-voltage applications, making it suitable for upgrading various electronic devices.

capacitors

TDK Corporation has launched the EPCOS B43659 capacitor series, the latest in snap-in aluminium electrolytic series. These components are designed for 450 V (DC) applications and have a high CV product. They retain the functionalities and applications of their predecessors but have smaller dimensions, ranging from 22 mm x 25 mm to 35 mm x 50 mm (D x H), with capacitance values between 140 µF and 1030 µF. Both standard two-terminal versions and three-terminal versions are available for installation accuracy.

Key performance features include a maximum ripple current capacity of 7.01 A at 120 Hz and +60 °C, with a lifespan of at least 2000 hours at temperatures up to +105 °C. These capacitors are suitable for various applications, including switched-mode power supplies, frequency converters, uninterruptible power supplies (UPS), medical equipment, and solar inverters.

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The newly designed capacitors feature an ultra-compact structure, with diameters ranging from 22 to 35 mm and lengths up to 100 mm. They are engineered to maximise energy density within a voltage range of 400 to 500 V DC, offering a 20% increase in capacitance compared to previous models. This enhancement contributes to their high energy density and high ripple current capability.

In terms of construction, these capacitors benefit from in-house developed anode foils, which are equipped with long-life oxide to increase their surface area significantly. This design not only improves performance but also ensures robustness. Additionally, they include an overload protection feature through a pressure relief device located on the base, enhancing their safety and durability.

The capacitor’s construction features an aluminium case insulated with a PET sleeve; however, the bottom of the can lacks an insulation sheet. It includes snap-in solder pins that secure the component on the PC board, and the minus pole is marked on a shrinking sleeve but is not insulated from the case. For safety, overload protection is provided by a pressure relief device on the base. Additionally, these capacitors can be requested with lengths up to 100 mm to accommodate specific design needs.

For more information, click here.

Nidhi Agarwal
Nidhi Agarwal
Nidhi Agarwal is a journalist at EFY. She is an Electronics and Communication Engineer with over five years of academic experience. Her expertise lies in working with development boards and IoT cloud. She enjoys writing as it enables her to share her knowledge and insights related to electronics, with like-minded techies.

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