Exxelia Ohmcraft Custom Resistors Help Ensure Speed and Accuracy of Automobile Electronics Testing

ROCHESTER, N.Y., July 28, 2020 — Before being sent off to dealerships for sale, automobiles are subject to a series of tests as part of the production process. To keep pace with industry trends and customer demands, today’s cars contain more electronic devices than ever, all of which must be tested ...


For this purpose, manufacturers of automotive testing systems have relied on Exxelia Ohmcraft—a leader in thick-film, high-voltage, high-precision resistor design and manufacturing—for more than 15 years.

This type of automotive testing ensures that all of the vehicle’s electronic components meet the most stringent testing standards, screening out any faulty devices or malfunctions. Tests are often run on multiple electronics simultaneously, increasing the complexity of these testing systems, which utilize precision low-noise chip resistors from Exxelia Ohmcraft for their accuracy and reliability.

“The automotive industry is rapidly changing and evolving, presenting manufacturers with not only new testing challenges, but the pressure to get their products into the market faster,” said Eric Van Wormer, Vice President of Exxelia Ohmcraft. “By leveraging Exxelia Ohmcraft’s custom surface mount resistors, automotive testing manufacturers are able to help their customers—automobile companies—meet the demands of the industry.”

Exxelia Ohmcraft’s technology utilizes the proprietary Micropen electronic printing system to “print” precise, narrow, serpentine lines with resistive ink on a ceramic substrate, producing higher performance resistors over a wider range of values on a smaller surface area than is possible with conventional film resistor technology.

Published on 29 Jul 2020 by Rebecca Charles

Exxelia at Space Tech Expo – Booth #5009

100% invar tuning screws with self-locking system  Invar-36 is a unique Iron-Nickel alloy (64 % Fe / 36 % Ni) sought-after for its very low coefficient of thermal expansion. With 1.1 ppm. K–1 between 0°C and 100°C, Invar-36 is about 17 times more stable than Brass which is the most traditional and common alloy Tuning Elements are made of. The working temperature range in Space is so wide that this property becomes essential for a reliable and stable cavity filter tuning. Self-locking system is a technology commonly used on Tuning Element made of Brass or other soft “easy-to-machine” alloys but is innovative and pretty advanced when applied to hard and tough Invar 36. The design consists of two threaded segments separated by two parallel slots. After cutting both parallel slots, the rotor is compressed in its length in order to create a plastic deformation. Thus, an offset is induced between the two threaded segments which generates a constant tensile stress in the rotor from the moment threaded segments are screwed. High power and high frequency ceramics with the new C48X dielectric Range of high voltage ceramic capacitors based on brand new dielectric material C48X, combining most advantages of NPO and X7R dielectrics. Compared to X7R material, C48X dielectric allows to get the same capacitance values under working voltage with the unrivaled advantage of a very low dissipation factor (less than 5.10–4). Besides, it can also withstand very high dV/dt, up to 10kV/μs, which makes it the solution of choice for pulse and fast charge/discharge applications or firing units. Thus capacitors with C48X dielectric appear to be ideally suited for power applications where heat dissipation may be detrimental to performances and reliability. Magnetic components based on adaptive CCM technology Exxelia designed CCM technology to respond to the growing interest of electronic engineers for inductors and transformers with multiple outputs, high power density and reduced footprint. Qualified for aeronautic and space applications, the CCM product line features terrific robustness. The CCM technology adapts to most every need, even the harshest environments, including VIGON® resistance. The series offers five different sizes, allowing optimized component design in a pick-and-place surface mount (SMD) package. Through-hole (TH) packages are also available upon request. CCM transformers and inductors can operate over a wide temperature range with a minimal temperature of -55° C. The standard thermal grade of the technology is 140° C. The epoxy molding protecting the winding ensures a lower temperature gradient and a better heat dissipation. Each unit is thoroughly tested with a dielectric withstanding strength of 1,500 VAC.

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