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RF/Microwave??

Chip resistor arrays reduce footprint by 40 percent

Posted: 02 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:vishay intertechnology? chip resistor? beyschlag? acac 0612? acac 0612?

Designed for applications that demand high component densities and accurate and stable resistor performance, the two new series of flat chip resistor arrays from Vishay Intertechnology Inc. integrate four thin film resistors into a single 0612 surface-mount package.

The Vishay Beyschlag ACAC 0612 resistor arrays provide tight tracking" target=_blank>precision series resistor arrays feature absolute TCR of 25ppm/K and tracking TCR of 15ppm/K, with tracking TCR of 10ppm/K available upon request. Meanwhile, the ACAC 0612 professional series resistor arrays feature absolute TCR of 50ppm/K, with 25ppm/K available upon request. The ACAC 0612 precision series arrays have absolute tolerance of 0.25 percent and matched tolerance of 0.1 percent, while the ACAC 0612 professional series arrays have absolute tolerance of 1 percent.

The resistor arrays feature a resistance options range between 100 kilohms and 221 kilohms, and a footprint of 1.6-by-3.2mm for a reduction of approximately 40 percent when compared to the use of four discrete 0603 resistors. These arrays are available with four equal values, four different values, or two equal value pairs. Maximum power dissipation for the new arrays is 0.3W, with individual resistors rated at a maximum of 0.1W.

For arrays featuring differing individual resistance values, the Rmin/Rmax ratio is 1:10 for the professional series arrays and 1:5 for the precision series arrays. Close tolerance matching of 0.1 percent in the case of the precision series arrays ensures highly reliable and stable fixed resistor ratios, added the company.

The ACAC 0612 resistor arrays are suitable for use in voltage dividers, feedback circuits and signal conditioning functions. Target applications include automotive engine control units, climate control, transmission controls and driver safety systems, mobile telecom base stations, medical instruments, precision measuring equipment, and high-end audio amplifiers. They can also be used in sensing and management systems for PSUs and battery chargers.

The new products from Vishay are Pb-free, with the pure tin plating providing compatibility with Pb-free and Pb-containing soldering processes.




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