RESARR4500Rev3

RESARR4500Rev3 is a modular resistor array designed for high-density signal conditioning in printed circuit boards. It represents the third revision in the RESARR4500 family, developed by RESARR Technologies. The device consolidates multiple resistor elements into a single compact package to provide repeatable impedance networks for instrumentation, data acquisition, calibration, and front-end conditioning.

Design and configurations: The RESARR4500Rev3 family offers configurations of 8, 16, or 32 channels in surface-mount packages. Each channel presents a fixed or selectable resistance in the range of 1 kΩ to 100 kΩ, with nominal tolerances typically between 0.5% and 1% depending on the variant. Temperature coefficient is specified around ±100 ppm/°C. Each channel can dissipate up to 0.25 W, and packages are available in common SMT footprints such as 0402 and 0603. The Rev3 design reduces parasitic capacitance and improves thermal performance through a revised internal land pattern and shielding layer.

Specifications and compliance: Typical operating temperature is -40 to +125°C. The device supports standard reflow soldering processes and complies with RoHS and REACH regulations. It is intended for board-to-board routing and can be used in larger resistor networks when daisy-chained configurations are employed. Modules are shipped with fixed resistor values configured at manufacture; adjustable networks require external trimming or selecting a variant that incorporates adjustable elements.

Development history and revisions: The RESARR4500 line originated as a compact resistor-array solution for precision signal conditioning. Rev2 introduced improved tolerance and EMI shielding, while Rev3 further enhanced thermal performance, reduced parasitic elements, and expanded channel options to meet stricter performance requirements in intermediate- to high-density applications.

Applications and availability: Commonly used in test equipment, analog front ends, calibration rigs, and aerospace or industrial systems requiring robust, compact resistor networks. See also resistor array and resistor network for related technologies. References include manufacturer documentation and product datasheets.