Electronic Components Solutions

Comparative Performance between Thick Film and Electron Beam Welded Metal Band Resistor Technologies

Comparative Performance between Thick Film and Electron Beam Welded Metal Band Resistor Technologies

When designing a DC/DC convertor or battery management system, you typically use a low ohmic current sense resitor to measure the performance of your application.
HTR adapted a new technology that makes you able to create a reliable and precise current measurement at a smaller size and with lower power consumption.

    Basic application

  • The Electron Beam welded and Thick Film current sense resistors are predominantly used in the DC/DC convertor output block and in battery management. The basic circuitry followed is that these low ohm resistors are connected in series with the load and the potential difference between both terminals are measured by an IC to determine the intensity of the current. The performance of IC’s available today has made great strides which enable them to measure current more accurately by being able to read ever diminishing potential differences. By using ultra low resistance values, it is possible to detect even large currents over 160 AMP, with lower power consumption as compared to devices being presently used.

  • Construction of the resistors

  • Low ohm resistors using the older Thick Film technology are made by screen printing the resistive element and electrodes on an alumina substrate. The Thick Film resistors which are available today have, generally speaking, resistance range in tens of milliohms. The Electron Beam welded metal band resistors have a very rugged construction where the different resistance alloys selected are welded to the copper electrodes. The very nature of the construction of these resistors contribute to excellent heat dissipation as compared to the Thick Film variety.

  • Electron Beam vs. Thick Film

  • Using this technology it is possible to make components with a resistance range of several milliohms which mean a much lower resistance value as compared to Thick Film components. Besides with the characteristic of superior heat dissipation as compared to the Thick Film devices, it lends itself to providing a smaller & more reliable device. Hence, the metal strip resistors offer higher power and very precise temperature co-efficient of resistance as compared to Thick Film devices. Further since these Electron Beam welded metal band resistors can be made having resistance value much lower than Thick Film components, they have the added advantage over Thick Film components by being able to exploit the property of the latest IC’s which can now measure even the smaller potential differences. HTR, as being an ISO/TS 16949:2009 company, is committed to offering the customers a full range of resistive devices using the latest Electron Beam technology to contribute to the enhanced detection accuracy, reduction in the size of the devices and in conserving power consumption.

  • Main Advantages

    Precision and power resistors
  • Precise measurement results
  • Very precise temperature coefficient (TC)
  • Low resistance value
  • Low power consumption
  • Small size

Related Solutions

  • Read your sensing elements directly by using the Smartec UTI

    The Universal Transducer Interface (UTI) is a complete analogue front end for low frequency measurement applications, based on a self-calibrating period-modulated oscillator. Sensing elements can be directly connected to the UTI without the need for extra electronics. Only a single reference element, of the same kind as the sensor, is required. The output is digital and can communicate with any type of micro-controller.

    The UTI provides interfacing for all kind of resistive and capacitive sensors.

  • A position test at very limited space by using a probe

    A position sensor system is the ideal solution for exact measurement and documentation of pin lengths, hole depths etc. This system can be used like a contact probe even in small centers. An integrated potentiometer allows the exact determination of the position of the DUT.

  • Current and voltage measurement in and around hybrid and electric drives

    No matter if you're designing a hybrid, electric or fuel cell powered application - a new development's sustainability always depends on the reliability in every-day use and therefore on controlling its energy flow and consumption permanently. Not every method for measuring current and voltage is able to fulfill each of the difficult requirements. Isabellenhütte has developed the current and voltage measuring module IVT for DC applications in alternative drive concepts based on its experience in the area of car battery management.

     

     

Supplier

  • Hi-Tech Resistors

    Hi Tech Resistor Pvt. Ltd. was established in 1986 as a specialist manufacturer of standard fixed wire wound resistors with basic technology aquired from Samsung Co. Ltd. HTR transformed itself into a modern and broad based manufacturer of wire wound resistive products, with state-of-the-art design and testing capabilities which are comparable with the best of the world.

  • Smartec

    Founded in 1987, Smartec B.V. was established out of a laboratory concept.
    A temperature sensor, with digital output, was developed at the Delft University of Technology (TUD), Netherlands. This sensor has proved to be more accurate and stable than any other digital temperature sensor on the market.
    Through research and development initiatives, the Smartec product range has been further enhanced with the introduction to market of the humidity sensor, infrared sensor, Universal Transducer Interface (UTI) and a complete line of pressure sensors in the range of 0.01 PSI until 300 PSI.
    Over the years Smartec has built up strategic alliances with top rated semiconductor companies in Europe and the Far East. These alliances have led to long-term partnerships, excelling in close cooperation in research and development, with the most accurate and stable sensors in nowadays market as a result.

Related Blog messages

  • A new range of Electron Beam Welded, low ohm current sense resistors at HTR

    At this years Electronica, from November 11th until November 14th in Munich, HTR takes pride in introducing a new range of Electron Beam Welded low ohm/ current sense resistors. These resistors or shunts are very much on the cutting edge of developing resistor technology and these type of resistors might be a replacement for similar resistors made by Vishay.

  • HTR Resistor finder App

    HI-TECH RESISTORS PVT. LTD, popularly known as HTR in the electronics industry worldwide, is a highly innovative manufacturer of wire wound and low ohm current sense resistors.

    To show that HTR is not only innovative in the production of resistors, they have introduced an App "The HTR Resistor Finder". This App is already available to users of smart phones on Android technology and can be downloaded free from the App store today.

  • Pulse - Surge Capability of Resistors

    Due to existing needs, many modern electronic circuits and apparatus experience transient pulses and surges. This in turn has led to the need to "design in" transient surge protection especially in circuits like motor controllers.

  • UL APPROVED SAFETY FUSIBLE WIRE WOUND RESISTORS

    HTR an ISO/TS 16949 : 2009 Certified manufacturer has received UL Certification as per UL 1412 (HTR file #E342534) for their range of safety fusible Wire Wound Resistors. These devices are manufactured using specially selected wires which are wound on thermally efficient ceramic body & welded to end caps thus creating a fully welded product for 100% reliability.