TTI has introduced the Vishay SMR1DZ and SMR3DZ ultra high precision surface mount resistors that use Vishay’s Z-Foil technology to deliver a significant reduction of the resistive component’s sensitivity to ambient temperature variations (TCR) and applied power changes (PCR). Z-Foil also improves stability, allowing designers to guarantee a high degree of accuracy in fixed-resistor applications.
Featuring flexible terminations to ensure minimal stress transference from the PCB due to a difference in thermal coefficient of expansion, the devices offer a resistance range of 5Ω to 80kΩ, a low typical TCR of ±0.05 ppm/ºC from 0 to +60ºC and ±0.2 ppm/ºC from -55ºC to +125ºC with many value and tolerance combinations available to designers for their specific application requirements.
Applications for the new devices include precision amplifiers, high-precision instrumentation, medical and automatic test equipment, high-end stereo equipment, electron beam scanning and recording equipment, and equipment and instrumentation for military, aerospace, and down-hole environments.