EMI suppression capacitors offer size reduction and improved humidity resistance

TDK Corporation has launched the EPCOS B3292xM3/N3 series of X2 EMI suppression capacitors. These new components are 20% smaller than previous models and meet Grade III Test B standards for temperature, humidity, and bias (THB). Their compact size and improved durability suit space-constrained, high-humidity environments, particularly for 'across-the-line' applications in automotive and industrial settings.

The capacitors provide lead spacings from 15mm to 37.5mm and dimensions ranging from 18mm x 5mm x 10.5mm to 42mm x 14mm x 25mm (L x W x H), with capacitance values from 0.1µF to 4.7µF. Designed for harsh environments and AEC-Q200 compliant, the B3292xM3/N3 series is commonly used in automotive OBCs, as well as industrial systems such as UPS and hybrid inverters for ESS.

To meet Grade III Test B standards, they are tested at +85C and 85% relative humidity and subjected to rated AC voltage stress for 1000 hours (with lead spacing of 22.5mm or more) or 500 hours (with 15mm lead spacing). The components are rated for an AC voltage of 305V and can continuously handle a maximum DC voltage of 630V. With an operating temperature range of -40C to +110C, and self-healing properties due to their metallised polypropylene (MKP) dielectric, the B3292xM3/N3 series offers long-term reliability.

With its compact size and advanced durability, the B3292xM3/N3 series delivers a reliable, high-performance solution for EMI suppression, helping engineers save space and maintain reliability in demanding environments.