Design engineers seeking new solutions in ferrites have fresh options from Wurth Elektronik — for low-frequency applications in e-mobility, also for high frequency applications or interference suppression where space is at a premium.
For EMI suppression in the low-frequency range directly on the busbar, Wurth has released an oval-shaped ferrite ring, WE-OEFA-LFS, designed to easily slide over busbars. Its MnZn core material makes it ideal for suppressing low-frequency interference. The main application area for the new ferrite is electric vehicles.
Designed for high-current applications and a frequency range from 1 to 100 MHz, the oval ferrite can suppress electromagnetic interference in battery management systems, inverters, on-board chargers, cable harnesses and many other applications. It measures 15.6 × 65.4 × 35.4 mm, while the cable or busbar it encloses can measure 43 × 13 mm.
As inductors in high-frequency applications or as ferrites for interference suppression, Wurth has extended its series of wire-wound ferrites. With one component enabling two applications, the company now offers its WE-RFI inductors in sizes 0402 and 0603, which can be used as inductors for HF applications or as ferrites for interference suppression. Their design responds to increasing miniaturization and complements the existing sizes 0805 and 1008 sizes. They are suitable as low-pass filters for filtering high-frequency noise, data line filters, supply voltage decoupling, low-frequency radio applications and RFID.
As wire-wound ferrites, the inductors attain higher impedances than normal ferrites, even at high frequencies and over a wider bandwidth. Unlike multilayer ferrites, they show no DC bias behavior.
As high-frequency inductors, they offer high inductance values from 20 nH up to 47 µH with high rated current.
