automotive inductors, smt inductors, free inductor packages,

Murata has widened its portfolio of chip ferrite beads with the release of the BLM15PX_SH1 and BLM15PX_BH1 series and supplied in a 1005mm (0402 inch) size. These rugged and compact units are highly optimised for automobile deployment, and they provide engineers with the first power supply line noise suppression components in this size format. Current rated versions of 900mA to 3000mA are provided, with impedance figures at 100MHz of 33-Ohms to 600-Ohms being covered.

With mechanical systems inside vehicles being replaced by electronic ones and growing levels of data acquisition being seen, suppression of EMI noise emanating from power supply lines is a crucial element of modern automobile design. The number of sensors and cameras being included in vehicles is growing dramatically to support ADAS and, eventually, autonomous driving. The integrity of the data captured by these devices must be maintained. At the same time, it is transported to and from the relevant ECUs.

The inherent robustness of Murata’s AEC-Q200 qualified BLM15PX_SH1 and BLM15PX_BH1 series make these chip ferrite beads extremely ideal for use in uncompromising automotive environments. The low DC resistance characteristics of these components (down to 0.022 Ohms Max.) help to mitigate the power losses experienced and keeps associated heat generation to a minimum. The BLM15PX_SH1 series supports an operational temperature range of -55C to +125C with the BLM15PX_BH1 series supporting an even greater range of -55C to +150C.

“Engineers need to ensure that high degrees of noise control have been implemented so that in-vehicle infotainment and driver assistance functions will not be impacted,” states Tomohiro Yao, EMI Division, general manager of marketing and promotion department at Murata. “The BLM15PX_SH1 and BLM15PX_BH1 series set new benchmarks when it comes to noise suppression, delivering performance capabilities that would normally only be possible with much larger components.”