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Vishay unveils new thin-film resistor divider net

Posted: 12 Aug 2004 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? mp series? resistor divider network?

Vishay Intertechnology Inc. released its new MP series of precision thin-film resistor divider networks, claimed to be the first such devices to offer 0.05 percent resistance ratio tolerance in the SC-70 package.

Intended for use in IAs, precision voltage dividers and bridge network circuitry, the surface-mount devices are optimized for industrial control systems, handheld instruments such as portable measuring devices for diagnostics and other end systems requiring precision resistor pairs with small dimensions.

Members of the MP series provide precision tolerances down to 0.05 percent in one of the industry's smallest standard package, offering high performance while requiring little board space. As the first divider resistors to combine such small size with such low ratio tolerance, the products provide an alternative to larger-format devices packaged in the SOT-23 or SOT-143 case sizes, Vishay said.

The off-the-shelf solutions are available as isolated matched-pair or center-tapped resistor divider networks in 3-lead (MP3) or 4-lead (MP4) standard molded SC-70 packages with maximum dimensions of 2.20-by-1.35mm and a height profile of 1.1mm. They feature a TCR tracking of 2ppm/C, and their standard SC-70 package format provides common standard resistance values ranging from 1 kiloohm to 10 kiloohms per resistor. Custom designs are available for applications requiring nonstandard ratios.

Each network is specified for a TCR value of 25ppm/C and a power rating of 0.075W per resistor or 0.150W for the package, with a TAMELOX (passivated nichrome) resistive layer enhancing stability. Long-term stability is rated for 500ppm at 70C for 2,000h, and shelf-life stability specified at <100ppm at 25C for one year. The devices' operating temperature range is between -55C and 125C.

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