Vishay Intertechnology has launched new automotive MPMA precision matched-pair resistor networks packed in a compact molded surface-mount SOT-23, designed for use in medical instrumentation equipment.
Providing a resistance range from 250 ohms to 50 kilohms with divider ratios from 1:1 to 50:1, each MPMA network is constructed using moisture-resistant thin film tantalum nitride resistor film with enhanced passivation on a high purity alumina substrate.
The dividers also provide higher precision matching capability than discrete SMT chips, low TCR tracking of 2 ppm/°C and tight ratio tolerance to 0.05 %, with long-term ratio stability over time and temperature.
In addition to the use in medical applications, the devices are used in precision voltage divider, operational amplifier, and battery signal management applications in automotive, industrial, telecommunications and process control.
RoHS-compliant resistor networks, which are available with lead-free terminations, also offer power ratings of 100 mW at + 70 °C per resistor, extremely low noise of less than – 30 dB, low voltage coefficients of less than 0.1 ppm/V, and a operating temperature range of – 55 °C to + 155 °C.