FRSH Series (Z1 Foil Technology) 0603, 0805, 1206, 1506, 2010, 2512 Ultra High Precision Foil Wraparound Surface Mount Chip Resistor with Extended Pads for High Power/High Temperature Applications up to +225C FEATURES Temperature coefficient of resistance (TCR): 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 % typical at + 200 C for 2000h (working power) Vishay Foil Resistors (VFR) introduces a new line of Ultra Bulk Metal Foil resistors are not restricted to standard Precision Bulk Metal Z1 Foil Technology: wraparound values specificas require values can be supplied at no surface mount chip resistors with extended pads for high extra cost or delivery (e.g. 1K2345 vs. 1K) (1) temperature up to + 225 C (working power: to 330mW at Thermal stabilization time < 1 s (nominal value achieved +200 C). within 10 ppm of steady state value) Electrostatic discharge (ESD) at least to 25 kV The new extended pad designs also exhibit better heat Non inductive, non capacitive design dissipation, thus enabling higher power usage (Working Rise time: 1 ns effectively no ringing (1) Power: to 1200mW at + 70C ). The FRSH has a full Current noise: 0.010 V (RMS)/Volt of applied voltage wraparound termination that ensures safe handling during (< - 40 dB) the manufacturing process, as well as providing stability Voltage coefficient: < 0.1 ppm/V during multiple thermal cyclings. Non inductive: < 0.08 H Non hot spot design The FRSH is available in any value within the specified Terminal finishes available: resistance range. VFR s application engineering department High temperature solder is available to advise and make recommendations. For Matched sets are available on request non-standard technical requirements and special Prototype quantities available, please contact applications, please contact foil vpgsensors.com. foil vpgsensors.com TABLE 1 - TOLERANCE AND TCR VS. (1)(2) RESISTANCE VALUE FIGURE 1 - POWER DERATING CURVE (- 55 C to + 200 C, + 25 C Ref.) RESISTANCE -55C +70C TOLERANCE TCR Typical 100 VALUE (%) (ppm/C) () 75 100 to 125K 0.02 50 50 to < 100 0.05 2.5 25 25 to < 50 0.1 10 to < 25 0.25 0 -75 -50 -25 0 +25 +50 +75 +100 +125 +150 +175 +200 +225 +250 Note (1) Ambient Temperature (C) Performances obtained with ceramic PCB. See Table 2 for power spec. (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 www.vishayfoilresistors.com Revision: 27-Oct-15 foil vpgsensors.com 1 Percent of Rated Power FRSH Series (Z1 Foil Technology) 0603, 0805, 1206, 1506, 2010, 2512 HIGH TEMPERATURE PRODUCTS In very high-precision resistors that need to operate in an environment with temperatures above +175C, these effects Resistors are the passive building blocks of an electrical must be taken into account to achieve high stability with circuit. They may be used for dropping the voltage, buffering 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 Z1 Foil Technology provides an order of magnitude application requires stability over time and load, initial reduction in the Bulk Metal Foil elements sensitivity to accuracy, minimal change with temperature for more than temperature changesboth external and internalwith 200C, resistance to moisture and a number of other emphasis on long-term stability in high temperature characteristics that will be described below, the Z1 Foil environments. Technology products have the attributes needed for such In order to take full advantage of the low TCR and longterm application. Over the past few months, there has been stability improvement, it is necessary to take into account the considerable growth in the demand for precise, stable and differences in the resistors response to each of the reliable resistors that can operate in harsh environments above-mentioned effects. As described below, new products such as 85C/85% RH and especially at high temperatures have been developed to successfully deal with these factors. to 200C. Many analog circuits for industrial, military, For high temperature applications where stability and total aerospace, medical, downhole, oil well and automotive error budget is the main concern, the new generation of applications require passive components such as resistors to Vishay Foil resistors offers the best resilience against time at have a minimal drift from their initial values when operating elevated temperature. above +175C and in humid environments. In these applications, the most important factor is the temperature The Z1 Foil Technology allows us to produce dependence and the end of life tolerance (which is part of the customer-oriented products designed to satisfy unique and stability) and to a lesser extent, the initial tolerance. specific technical requirements. In addition to the special chip stabilization under extreme environment conditions in The Z1 Foil Technology resistors provide stabilities well the production line, we offer additional specially oriented post under 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 downhole 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, articles 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 VPG s ultra high precision Bulk Metal Foil technology withstanding electrostatic discharges at least to 25 kV without includes many types of resistors with a variety of standard degradation. configurations that can withstand unconventional environmental conditions above and below the earths The VFR 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 vpgsensors.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 Document Number: 63211 2 foil vpgsensors.com Revision: 27-Oct-15