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10/17/16 01:18 AM
Resistors achieve 100mΩ resistance in 0603 design Report this article as Inappropriate to us !!!Login to Reply

Low-ohmic chip resistors, optimised for current detection applications in compact equipment, have been developed by ROHM Semiconductor. The UCR006 series of ultra-compact (0.6x0.3mm) thick-film chip resistors is offered in resistances as low as 100mΩ, providing greater energy savings.

The company claims that they are the first 0603mm resistors in the industry to ensure a temperature range of -55 to 155°C in the low-ohmic region, and feature twice the rated power compared with competitor products in the same size. Contributing to further miniaturisation, the higher power handling capability in a smaller size could see them being used as replacements for larger 1005 resistors.

In the UCR006 series, heat dissipation is improved and rated power increased to 0.1W – twice that of conventional products. Operating temperature range has also been expanded in the low-ohmic region to -55°C to 155°C, enabling compatibility with a greater variety of applications. Trimming technology makes it possible for the device series to achieve a resistance tolerance of ±1% (F Class), which has been traditionally difficult to realize at low resistances.

The devices have adopted the reverse-mount design utilised in the existing series in order to minimise resistance variations during soldering and ensure a TCR between 0 and 300ppm/°C, which reduces resistance fluctuations due to temperature changes. This provides high accuracy current detection required by today’s high-performance devices. 

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