Sumida Releases Shielded Power Inductors for Compact, Noise-Sensitive Systems
The 0615CDMCC/DS series uses metal compound molding construction to deliver a shielded magnetic structure with improved thermal performance, reduced EMI, and minimal noise in a low-profile.
Sumida America has released the 0615CDMCC/DS series, a family of shielded power inductors manufactured using metal compound molding. This manufacturing approach embeds the winding within a solid composite core structure, eliminating the internal air gaps typically found in conventional ferrite-based inductors. The result is improved magnetic flux containment, which translates to higher saturation current ratings and more stable inductance behavior under load.
Sumida’s 0615CDMCC/DS series power inductors feature a metal compound molding construction. Image used courtesy of Sumida
0615CDMCC/DS Series Power Inductors
The 0615CDMCC/DS series spans inductance values from 0.12 μH to 1.50 μH, covering common requirements for current-mode DC/DC converters and multiphase VRM topologies. Engineers working with high-current rails will find that the low DCR characteristics help minimize conduction losses, a critical factor when designing against tight power budgets in computing and server applications. The molded construction also enables improved thermal dissipation compared to wire-wound alternatives, allowing the inductor to operate effectively across an extended temperature range of -55°C to 125°C.
Shielding and EMI Mitigation
The series metal composite structure inherently provides magnetic shielding without requiring additional external shielding components. This reduces radiated EMI and limits magnetic coupling to adjacent traces or sensitive analog circuitry. For designers of high-speed digital boards or RF subsystems, this shielding characteristic offers greater placement flexibility on densely populated PCBs. The reduced flux leakage also supports tighter component spacing, which can be leveraged to meet aggressive form factor targets in mobile, wearable, and IoT devices.
Electrical characteristics of the 0615CDMCC/DS series lineup. Image used courtesy of Sumida
Acoustic Noise Suppression
One notable feature of the 0615CDMCC/DS series is its suppression of audible noise during high-frequency switching operation. Traditional inductors with ferrite cores or exposed windings can produce coil whine due to magnetostrictive effects and mechanical vibration of the winding. The monolithic composite design dampens these vibrations within the core material itself, making the series suitable for applications where acoustic performance is a concern. This includes medical instrumentation, consumer electronics, and industrial equipment deployed in quiet environments or where user experience is sensitive to audible artifacts.
Compact Power Systems
The 0615CDMCC/DS series is designed for use in DC/DC buck, boost, and buck-boost converters, as well as distributed point-of-load regulators found in computing platforms, storage systems, and battery-powered devices. The ultra-low profile of 1.5 mm and compact 7.3 × 6.8 mm footprint make it compatible with mechanically constrained designs, including thin client devices, single-board computers, and edge processing modules. Standard tape-and-reel packaging supports automated pick-and-place assembly for volume production. The series is available now through authorized distributors, priced at $0.256 per unit in 10,000-unit quantities.
