Würth Elektronik reveals miniature coiled metal-alloy power inductors

Claimed to be one of the world’s smallest coiled metal-alloy power inductors, the WE-MAPI is characterised by a high saturation current, high permeability and low resistance. Application areas are high performance DC/DC converters with a high efficiency for switching frequencies of up to 20MHz.

The range is available in 5020, 5030 sizes and now, the company has introduced the 4020HT model. The WE-MAPI 4020HT has an operating range of -55 to +150 degrees C. According to Würth it also shows AC winding losses 55 per cent lower than those for comparable products on the market.

The 5020 and 5030 sizes of the AEC-Q 200-qualified power inductors are also suitable for use in mobile devices and have an operating temperature -40 to +125 degrees C.

The saturation current of all WE-MAPI versions is four times higher than that of similarly dimensioned components, adds Würth. The WE-MAPI series is distinguished by the quality finishing of the modules. The coil, made of enamelled copper wire, is firmly embedded in a metal-powder alloy and the hybrid bonding system reduces the thermal ageing of the component. WE-MAPI components are manufactured entirely without welding or soldering spots and hence do not have any potential weak points. They are also designed to be suitable for pick and placement. Ni/Sn contact surfaces in the place of clips give the surface mount power inductor perfect coplanarity and reduce the space required. The self-screening construction ensures the best possible EMC performance, claims Würth.

The reduced dimensions of the WE-MAPI components make them well-suited for use in high efficiency power supply systems and space-critical applications, for example power-supply units for operating panels, mobile devices, DC/DC converters for high current power supplies, DC/DC converters for FPGAs or point of load (PoL) converters. The coils are also suitable for use on mainboards and graphics cards, for CPU/RAM power supplies, or in wireless communication devices.

All 15 WE-MAPI module sizes are now available from stock, with no minimum order requirements.

Würth Elektronik also offers free-of-charge samples and design kits with a restocking service.


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