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Y4066125K000T0R Datasheet(PDF) 2 Page - Vishay Siliconix |
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Y4066125K000T0R Datasheet(HTML) 2 Page - Vishay Siliconix |
2 / 7 page FRSH Series (0603, 0805, 1206, 1506, 2010, 2512) (Z1-Foil) Vishay Foil Resistors www.vishayfoilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63211 2 Revision: 20-Mar-12 HIGH TEMPERATURE PRODUCTS Resistors are the passive building blocks of an electrical circuit. They may be used for dropping the voltage, buffering the surge when the circuit is turned on, providing feedback in a monitoring loop, sensing current flow, etc. When the application requires stability over time and load, initial accuracy, minimal change with temperature for more than 200 °C, resistance to moisture and a number of other characteristics that will be described below, only the new generation of Vishay Foil Resistors have the attributes needed for such application. Over the past few months, there has been considerable growth in the demand for precise, stable and reliable resistors that can operate in harsh environments and especially at high temperatures to 220 °C. Many analog circuits for industrial, military, aerospace, medical, down-hole, oil well and automotive applications require passive components such as resistors to have a minimal drift from their initial values when operating above + 175 °C and in humid environments. In these applications, the most important factor is the temperature dependence and the end of life tolerance (which is part of the stability) and to a lesser extent, the initial tolerance. The new Vishay Foil resistors provide stabilities well under the maximum allowable drift required by customers’ specifications through thousands of hours of operation under harsh conditions, such as the extreme temperatures and radiation-rich environments of down-hole oil-well logging applications, in the frigid arctic, under the sea or in deep space. All Bulk Metal® Foil resistors receive stabilization processing, such as repetitive short term power overloads, to assure reliable service through the unpredictable stresses of extreme operation. Compared to Bulk Metal® Foil, thick and thin film resistor elements are produced with a non-controllable material. Heat or mechanical stresses on the resistive elements cause the particles forming the film to expand. However, after these stresses are alleviated, the particles in the film matrix do not return to the exact original position. That degenerates their overall stability. Vishay Foil Resistors’ Ultra High Precision Bulk Metal® Foil technology includes many types of resistors with a variety of standard configurations that can withstand unconventional environmental conditions above and below the earth’s surface using special post manufacturing operations specially developed for this purpose. The stability of a resistor depends primarily on its history of exposures to high temperature. Stability is affected by: 1. Changes in the ambient temperature and heat from adjacent components (defined by the Temperature Coefficient of Resistance, or TCR) 2. Destabilizing thermal shock of suddenly-applied power (defined by the Power Coefficient of Resistance, or PCR) 3. Long-term exposure to applied power (load-life stability) 4. Repetitive stresses from being switched on and off In very high-precision resistors that need to operate in an environment with temperatures above + 175 °C, these effects must be taken into account to achieve high stability with changes in load (Joule Effect) and ambient temperature. The Bulk Metal® Foil Resistors’ new Z1-Foil technology provides an order of magnitude reduction in the Bulk Metal® Foil element’s sensitivity to temperature changes — both external and internal – with emphasis on long term stability in high temperature environments. In order to take full advantage of the low TCR and long term stability improvement, it is necessary to take into account the differences in the resistor’s response to each of the above-mentioned effects. As described below, new products have been developed to successfully deal with these factors. For high temperature applications where stability and total error budget is the main concern, the new generation of Vishay Foil resistors offers the best resilience against time at elevated temperature. The new Vishay Foil technology allows us to produce customer-oriented products designed to satisfy unique and specific technical requirements. In addition to the special chip stabilization under extreme environment conditions in the production line, we offer additional specially oriented post manufacturing operations (PMO) for high temperature applications that require an even higher degree of reliability and stability. Electrostatic Discharge (ESD) is another potential problem that can cause unpredictable failure in high temperature applications that increase the sensitivity of the resistors to ESD. ESD damage to electronic devices can occur at any point in the device’s life cycle, from manufacturing to field service. A resistor that is exposed to an ESD event may fail immediately or may experience a latent defect. With latent defects, premature failure can occur after the resistor is already functioning in the finished product after an unpredictable length of service. Bulk Metal® Foil resistors are capable of withstanding electrostatic discharges at least to 25 kV without degradation. VFR’s Application Engineering department is always available to assist with any special requirements you might have. If you are not sure which resistor best suits your needs, please do not hesitate to contact them for more information: Foil@vishaypg.com |
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