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VSR 데이터시트(PDF) 1 Page - Vishay Siliconix |
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VSR 데이터시트(HTML) 1 Page - Vishay Siliconix |
1 / 4 page Document Number: 63009 For any questions, contact: foil@vishay.com www.vishay.com Revision: 16-Jul-07 1 VSR Series Vishay Foil Resistors Bulk Metal® Foil Technology Industrial Precision Resistors with TCR of ± 4 ppm/°C and Tolerance of ± 0.01 % Any value at any tolerance available with resistance range INTRODUCTION Bulk Metal® Foil Technology out performs all other resistor technologies available today for applications that require high precision and high stability. This technology has been pioneered and developed by VISHAY, and products based on this technology are the most suitable for a wide range of applications. Generally Bulk Metal® Foil technology allows us to produce customer orientated products designed to satisfy challenging and specific technical requirements. The VSR series of resistors is a low cost version of the well established S-Series of resistors. These resistors are made of foil elements so all of the inherent performance of foil is retained. They do not however, have the same TCR or tolerance ranges (see table 1 for details). These products find a wide range of usage in high end stereo equipment and some grades of test and measurement equipment. Standoffs are dimensioned to provide a minimum lead clearance of 0.010 inches between the resistor body and the printed circuit board, when the standoffs are seated on the board. This allows for proper cleaning after the soldering process. Our Applications Engineering Department is available to advise and to make recommendations for non standard technical requirements and special applications, please contact us. FEATURES • Temperature Coefficient of Resistance (TCR)1): ± 4 ppm/°C (0 °C to + 60 °C) ± 8 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.) • Resistance Range: 0.5 Ω to 1 MΩ (higher or lower values of resistance are available) • Resistance Tolerance: to ± 0.01 % • Load Life Stability: to ± 0.005 % at 70 °C, 2000 hours at rated power • Electrostatic Discharge above 25 000 V • Non Inductive, Non Capacitive Design • Rise time: 1 ns without ringing • Current Noise: - 40 dB • Thermal EMF: 0.05 µV/°C typical • Voltage Coefficient: < 0.1 ppm/V • Inductance: 0.08 µH • Matched Sets Available • Terminal Finishes Available: Lead (Pb)-free Tin/Lead Alloy • Any value available within resistance range (e.g. 1K234) • Prototype samples available from 48 hours. For more information, please contact foil@vishay.com • For better performances please review the S Series datasheet Note 1. For values below 50 Ω please contact Application Engineering APPLICATIONS • Industrial • Medical • Audio (high end stereo equipment) • Test and Measurement equipment • Precision Amplifiers * Pb containing terminations are not RoHS compliant, exemptions may apply Available Pb-free RoHS* COMPLIANT FIGURE 1 - POWER DERATING CURVE 200 % 175 % 150 % 125 % 100 % 75 % 50 % 25 % 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200 Ambient Temperature ( °C) - 55 °C + 70 °C Double Rated Power Rated Power ∆ Safe operation for < 150 ppm R after 2000 hours load-life. FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) Mutual Inductance Reduction due to Change in Current Direction Current Path Before Trimming Note: Foil shown in black, etched spaces in white Interloop Capacitance Reduction in Series Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Current Path After Trimming |
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