CAMBRIDGE, UK — Vishay Intertechnology Inc., announced a series of quad precision thin film SMT resistor networks whose resistance values can be customised individually.

The QFN series features a 20-pin 5x5-mm quad flat no-lead package with a 0.65mm pitch and 1mm profile.

The package format of these series saves 30 to 60 % on PC board space compared to traditional 20-lead SOIC packages.

Precision ratio tolerances are ± 0.05 %, with stable film and performance characteristics of 500 ppm at + 70 °C for 2,000 hours.

The QFN resistor networks offer a low temperature coefficient of resistance (TCR) of ± 25 ppm/°C and tight TCR tracking to ± 5 ppm.

These specifications make the devices suitable for differential amplifier applications in industrial, telecommunications, military, medical, and test and measurement instrumentation and equipment.

Thanks to the devices' custom circuit capability, resistance values can be different for each resistor in the QFN networks and range from 100 Ohm per resistor to 500 kOhm per package.

The devices offer power ratings of 50 mW at + 70 °C per resistor, very low noise below - 30dB, voltage coefficients of 0.1 ppm/V, and a temperature range of - 55 to +125 °C.

The devices are qualified to moisture sensitivity level 1 per J-STD-020. Offering lead (Pb)-free terminations, the resistor networks are compliant with RoHS Directive 2002/95/EC and are flame-resistant in accordance to UL 94 V-0.

Custom configurations of the devices are available. Samples and production quantities of the QFN series are available now, with lead times of eight weeks for custom orders.