VPG – Ultra high-precision Z-Foil DSMZ surface-mount voltage divider for demanding applications (Y4485V0004QT9R)

Vishay Precision Group (VPG) VFR division offers the VFR DSMZ, an ultra high-precision Z-Foil surface-mount voltage divider which features TCR of ±0.05ppm/C from 0C to +60C and ±0.2 ppm/C from 55C to +125C, PCR tracking (∆R due to self heating) of 5ppm at rated power, tolerance match of ±0.01 %, and load life stability of ±0.005%.

The DSMZ voltage divider is built on VFR’s Z-based foil technology, which outperforms all other resistor technologies for applications that require ultra-high precision and stability. Greatly reducing the resistive component’s sensitivity to ambient temperature variations (TCR) and applied power changes (PCR), Z-Foil improves stability by an order of magnitude compared to any other resistor technology, allowing designers to ‘guarantee’ a high degree of accuracy in fixed-resistor applications, says the company.

The DSMZ voltage divider provides a matched pair of Bulk Metal Z-Foil resistors in a single, surface-mount package with dimensions of 4.06mm by 2.69mm and a height profile of 1.60 mm. Device features include a load-life stability of ±0.005% for 2000 hours at 70C; a resistance range of 100ohm to 10kohm per resistor; a power rating of 0.05W per resistor at 70C; current noise less than -40dB; and can withstand electrostatic discharges (ESD) of 25,000V. The DSMZ offers a fast rise time of 1 to 10ns (depending on resistance values) without ringing and features a non-inductive, non-hot-spot design.

Typical applications include instrumentation and differential amplifiers, bridge networks, radio arms in bridge circuits, medical and test equipment, and military and aerospace systems. Offering better performance and more efficient use of board space than discrete resistors and matched pairs, the DSMZ is also available in custom versions to meet non-standard technical and application requirements.