FRSH Series (0603, 0805, 1206, 1506, 2010, 2512) (Z1-Foil) Vishay Foil Resistors Ultra High Precision Foil Wraparound Surface Mount Chip Resistor with Extended Pads for High Power/High Temperature Applications up to +225C, Load Life Stability of 0.05% ,TCR to 1ppm/C FEATURES Temperature coefficient of resistance (TCR): 1 ppm/C typical (- 55 C to + 125 C, + 25 C ref.) 2.5 ppm/C typical (- 55 C to + 200 C, + 25 C ref.) Resistance range: 10 to 125 k(for higher and lower values, please contact VFR s application engineering department) Resistance tolerance: to 0.02 % (1) Working power : to 1200mW at + 70 C to 330mW at + 200 C Long term stability: to 0.05 % at + 225 C for 2000h, no power INTRODUCTION Load life stability: to 0.05 % at + 200 C for 2000h, at Vishay Foil Resistors (VFR) introduces a new line of Ultra working power Precision Bulk Metal Z1-Foil technology: wraparound Vishay Foil resistors are not restricted to standard values surface mount chip resistors with extended pads for high specificas require values can be supplied at no extra (1) temperature up to + 225 C (working power: to 330mW at cost or delivery (e.g. 1K2345 vs. 1K) +200 C). Thermal stabilization time < 1 s (nominal value achieved within 10 ppm of steady state value) The new extended pad designs also exhibit better heat Electrostatic discharge (ESD) at least to 25 kV dissipation, thus enabling higher power usage (Working Non inductive, non capacitive design (1) Power: to 1200mW at + 70C ). The FRSH has a full Rise time: 1 ns effectively no ringing wraparound termination that ensures safe handling during Current noise: 0.010 V (RMS)/Volt of applied voltage the manufacturing process, as well as providing stability (< - 40 dB) during multiple thermal cyclings. Voltage coefficient: < 0.1 ppm/V Non inductive: < 0.08 H The FRSH is available in any value within the specified Non hot spot design resistance range. VFR s application engineering department Terminal finishes available: is available to advise and make recommendations. For High temperature solder non-standard technical requirements and special Matched sets are available on request applications, please contact foil vishaypg.com. Prototype quantities available in just 5 working days or sooner. For more information, please contact foil vishaypg.com TABLE 1 - TOLERANCE AND TCR VS. (1)(2) RESISTANCE VALUE (- 55 C to + 200 C, + 25 C Ref.) RESISTANCE FIGURE 1 - POWER DERATING CURVE TOLERANCE TCR Typical VALUE (%) (ppm/C) () -55C +70C 100 250 to 125K 0.02 75 100 to < 250 0.05 50 to < 100 0.1 2.5 50 25 to < 50 0.25 25 10 to < 25 0.5 0 Note -75 -50 -25 0 +25 +50 +75 +100 +125 +150 +175 +200 +225 +250 (1) Performances obtained with ceramic PCB. Ambient Temperature (C) (2) For tighter performances and non-standard values up to 150 k, please contact VFR s application engineering department by sending an e-mail to the address in the footer below. Document Number: 63211 For any questions, contact: foil vishaypg.com www.vishayfoilresistors.com Revision: 20-Mar-12 1 ELIM ARY PR IN Percent of Rated Power FRSH Series (0603, 0805, 1206, 1506, 2010, 2512) (Z1-Foil) Vishay Foil Resistors HIGH TEMPERATURE PRODUCTS In very high-precision resistors that need to operate in an environment with temperatures above + 175 C, these Resistors are the passive building blocks of an electrical effects must be taken into account to achieve high stability circuit. They may be used for dropping the voltage, buffering with changes in load (Joule Effect) and ambient temperature. the surge when the circuit is turned on, providing feedback in a monitoring loop, sensing current flow, etc.When the The Bulk Metal Foil Resistors new Z1-Foil technology application requires stability over time and load, initial provides an order of magnitude reduction in the Bulk Metal accuracy, minimal change with temperature for more than Foil elements sensitivity to temperature changes both 200 C, resistance to moisture and a number of other external and internal with emphasis on long term stability in characteristics that will be described below, only the new high temperature environments. generation of Vishay Foil Resistors have the attributes In order to take full advantage of the low TCR and long term needed for such application. Over the past few months, there stability improvement, it is necessary to take into account the has been considerable growth in the demand for precise, differences in the resistors response to each of the stable and reliable resistors that can operate in harsh above-mentioned effects. As described below, new products environments and especially at high temperatures to 220 C. have been developed to successfully deal with these factors. Many analog circuits for industrial, military, aerospace, For high temperature applications where stability and total medical, down-hole, oil well and automotive applications error budget is the main concern, the new generation of require passive components such as resistors to have a Vishay Foil resistors offers the best resilience against time at minimal drift from their initial values when operating above + elevated temperature. 175 C and in humid environments. In these applications, the most important factor is the temperature dependence and The new Vishay Foil technology allows us to produce the end of life tolerance (which is part of the stability) and to customer-oriented products designed to satisfy unique and a lesser extent, the initial tolerance. specific technical requirements. In addition to the special chip stabilization under extreme environment conditions in The new Vishay Foil resistors provide stabilities well under the production line, we offer additional specially oriented post the maximum allowable drift required by customers manufacturing operations (PMO) for high temperature specifications through thousands of hours of operation under applications that require an even higher degree of reliability harsh conditions, such as the extreme temperatures and and stability. radiation-rich environments of down-hole oil-well logging applications, in the frigid arctic, under the sea or in deep Electrostatic Discharge (ESD) is another potential problem space. All Bulk Metal Foil resistors receive stabilization that can cause unpredictable failure in high temperature processing, such as repetitive short term power overloads, to applications that increase the sensitivity of the resistors to assure reliable service through the unpredictable stresses of ESD. extreme operation. Compared to Bulk Metal Foil, thick and thin film resistor elements are produced with a ESD damage to electronic devices can occur at any point in non-controllable material. Heat or mechanical stresses on the devices life cycle, from manufacturing to field service. A the resistive elements cause the particles forming the film to resistor that is exposed to an ESD event may fail immediately expand. However, after these stresses are alleviated, the or may experience a latent defect. With latent defects, particles in the film matrix do not return to the exact original premature failure can occur after the resistor is already position. That degenerates their overall stability. functioning in the finished product after an unpredictable length of service. Bulk Metal Foil resistors are capable of Vishay Foil Resistors Ultra High Precision Bulk Metal Foil withstanding electrostatic discharges at least to 25 kV without technology includes many types of resistors with a variety of degradation. standard configurations that can withstand unconventional environmental conditions above and below the earths VFRs Application Engineering department is always surface using special post manufacturing operations available to assist with any special requirements you might specially developed for this purpose. The stability of a have. If you are not sure which resistor best suits your needs, resistor depends primarily on its history of exposures to high please do not hesitate to contact them for more information: temperature. Stability is affected by: Foil vishaypg.com 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 www.vishayfoilresistors.com For any questions, contact: foil vishaypg.com Document Number: 63211 2 Revision: 20-Mar-12 PRELIMINARY