TAIYO YUDEN Announces the Commercialization of a 4mm Square Metal Power Inductor “MCOIL™”

TAIYO YUDEN CO., LTD. has announced the commercial release of the new “MDMK4040” (4.0 x 4.0 x 1.2mm, the maximum height value), following the commercialization of a 4mm square metal core SMD power inductor “MCOIL™” series that uses metallic magnetic materials.

This product is a power inductor for choke coil applications aimed at the power circuits of low profile digital devices, such as Note PCs, as typified by the tablet PC and Ultrabook™ device, with their continuing trend for small size, low profile and high performance. “MDMK4040T2R2” (with an inductance value of 2.2μH and a DC bias characteristic of 4500mA), represents an improvement in the DC bias characteristic of approximately 2.7 times, which is a great contribution to the higher performance of the device.

Technology Background:

With Note PCs typified by the tablet PC and the Ultrabook™ device, along with the increasing high performance of devices, an extremely large number of functions must be installed in a small scale, low profile housing. Accompanying this, for the choke coils of power supply circuits as well, there are strong demands to deal with both the large currents (which are due to the continuing growth of power supply circuits and the increasing high performance of ICs), and the smaller sizes/profiles. However, for the choke coils, which used conventional ferrite materials, the DC bias characteristic dropped with increasing miniaturization, and it was impossible to get large currents to flow.

Accordingly, while newly developing metallic magnetic materials capable of greatly improving the DC bias characteristic, and combining this with the process technology which has been cultivated for the SMD power inductor through the proven NR series, TAIYO YUDEN has commercially released the 4mm square SMD power inductor “MDMK4040”, which handles both larger currents and copes with the smaller sizes and lower profiles. Having already released the 2mm square SMD type “MDMK2020”, and the chip type “MAMK2520” in May of this year, they have received a lot of favorable reviews as products suitable for smartphones.
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