VPG – SMNZ Resistor network has ±0.005% load life stability and rise time of 1ns without ringing

The SMNZ ultra-high-precision Z-Foil four-resistor network, from VPG’s VFR division, provides a low absolute TCR of ±0.05ppm/C from 0C to +60C and ±0.2ppm/C from -55C to +125C, an excellent PCR tracking (∆R due to self heating) of 5ppm at rated power, a tolerance match of 0.01%, and a load life ratio stability of 0.005%.

The new SMNZ resistor network is built on VFR’s breakthrough Z- foil technology, which provides a significant reduction of 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.

The SMNZ resistor network combines four independent Bulk Metal Z-Foil resistors in a single, surface-mount JEDEC MS-012 package with a 50-mil lead pitch. A large variety of resistance ratios is available. Offering better performance and more efficient use of board space than discrete resistors and matched sets, the SMNZ can be used independently or as divider pairs.

Applications for the new SMNZ resistor networks include instrumentation and differential amplifiers, bridge networks, radio arms in bridge circuits, medical and test equipment, and military and aerospace systems.

The SMNZ device has 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 0.4W (or 0.1W per resistor) at 70C; and current noise less than -40 dB. It offers a fast rise time of 1ns without ringing and features a non-inductive, non-hot-spot design. The SMNZ device offers the utmost in ESD immunity, withstanding electrostatic discharges exceeding 25kV, for increased reliability, says the company.

The SMNZ can be purchased from “your local catalog house”

Choose from one of the three options below:

DigiKey/SMNZ

Mouser/SMNZ

Farnell/SMNZ