Thin film on ceramic technology provides lifelong precision

TT Electronics has launched the QSOP-C and SOIC-C high-density resistor networks that combine high precision with stability and reliability. By using a ceramic substrate and a relatively large feature size, they offer better cross-talk performance than types based on silicon substrates. With target markets in the aerospace, medical and industrial areas, the parts are aimed at designers of analogue circuits such as amplifiers and ADCs requiring accurate gain and threshold levels defined by resistance ratios, where the operating temperature range is wide, humidity levels may be high, reliability level is paramount and periodic recalibration is not possible. The company’s QSOP-C and SOIC-C series resistor networks are particularly beneficial for use in aerospace and high reliability signal processing applications, as the parts are optionally available with thermal shock screening. Specific applications include flight computers, medical monitors and critical process monitors. The use of tantalum nitride film technology makes the QSOP-C and SOIC-C series resistor networks ultra-reliable as an inherently moisture-proof film system, and their ceramic based element offers lower crosstalk than silicon based alternatives. Reducing the PCB area required, up to 23 resistors are available in a single component. “We pioneered the use of Tantalum Nitride film technology to solve the moisture related reliability issues of industry standard Nichrome film technology. TT Electronics offers a class-leading, growing portfolio of ultra-high reliability discrete resistors and resistor networks,” commented Stephen Oxley, senior engineer, Applications and Marketing, Resistors Business Unit, TT Electronics.