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| VCS1625Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount Current Sensing Chip Resistors with TCR of 0.05 ppm/C and Power Coefficient of 5 ppm at Rated Power FEATURES * Temperature coefficient of resistance (TCR): 0.05 ppm/C typical (0 C to + 60 C) Pb-free 0.2 ppm/C typical (- 55 C to + 125 C, Available + 25 C ref.) (see table 1) RoHS* * Tolerance: to 0.2 % COMPLIANT * Power coefficient "R due to self heating": 5 ppm at rated power * Load life stability: 0.02 % at 70 C, 2000 h at rated power * Electrostatic discharge (ESD) above 25 000 V * Short time overload < 0.005 % * Ohmic values: 0.3 to 10 (for higher or lower values please contact us) * Power rating: 1 W at + 70 C (Figure 1) * Non inductive, non capacitive design * Rise time: 1 ns without ringing * Current rating: 5 A maximum * Current noise: < - 40 dB * Voltage coefficient: < 0.1 ppm/V * Non inductive: < 0.08 H * Non hot spot design * Any value available within resistance range (e.g. 1R234) * Prototype samples available from 48 h. For more information, please contact foil@vishay.com * For better performances please contact us Any value at any tolerance available within resistance range INTRODUCTION The Z-foil technology provides a significant reduction of the resistive component's sensitivity to ambient temperature variations (TCR) and applied power changes (PCR). Designers can now guarantee a high degree of stability and accuracy in fixed-resistor applications using solutions based on Vishay`s revolutionary Z-foil technology. Model VCS1625Z is a surface mount chip resistor designed with 4 pads for Kelvin connection. Utilizing Vishay's Bulk Metal(R) Z-foil as the resistance element, it provides performance capabilities far greater than other resistor technologies can supply in a product of comparable size. 0.05 ppm/C absolute TCR removes errors due to temperature gradients. This small device dissipates heat almost entirely through the pads so surface mount users are encouraged to be generous with the board's pads and traces. Our application engineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us. IM PR O VE D FIGURE 1 - POWER DERATING CURVE Percent of Rated Power - 55 C + 70 C 100 75 50 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (C) TABLE 1 - SPECIFICATIONS MODEL NUMBER RESISTANCE RANGE RESISTANCE TOLERANCE > 2.0 to 10 0.3 to 2.0 0.2 %, 0.5 %; 1.0 % 0.5 %; 1.0 % VCS1625Z Note * Tighter performances are available. Please contact application engineering foil@vishay.com * Pb containing materials are not RoHS compliant, exemptions may apply Document Number: 63094 Revision: 25-Feb-08 For any questions, contact: foil@vishay.com www.vishay.com 1 PR O DU CT TERMINATIONS * Two lead (Pb)-free options are available: gold plated or tin plated * Tin/lead plated APPLICATIONS * Military R * Medical I * Automatic test equipment (ATE) * Airborne (in heads-up display I E E systems) V * High precision instrumentation * Electron beam recording equipment * Electron microscopes * Current sensing applications * Forced balance electronic scales * Applications that require superior frequency stability 1 1 2 I I2 POWER RATING at + 70 C TYPICAL TCR and MAX. SPREAD (- 55 C to + 125 C, + 25 C) 0.2 2.8 ppm/C MAXIMUM CURRENT 5A 1W on alumina substrate (0.5 W on FR4 PCB) VCS1625Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount Current Sensing Chip Resistors with TCR of 0.05 ppm/C and Power Coefficient of 5 ppm at Rated Power FIGURE 2 - DIMENSIONS in inches (millimeters) Solder Pad Layout L W Mounting Pads (4) I1 A Electrical Schematic I1 E1 R I2 E2 0.200 (5.08) E1 0.070 (1.78) B I2 E2 Top View Bottom View INCHES L H W A B 0.250 0.010 0.160 0.010 0.040 maximum 0.080 0.005 0.040 0.010 FIGURE 3 - TRIMMING TO VALUES (Conceptual Illustration) Interloop Capacitance Reduction in Series Current Path Before Trimming Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance IM PR O VE D Mutual Inductance Reduction due to Opposing Current in Adjacent Lines Note: Foil shown in black, etched spaces in white TABLE 2 - PERFORMANCE SPECIFICATIONS TEST Thermal shock 5 x (- 65 C to + 150 C) Low temperature operation Short time overload High temperature exposure Resistance to soldering heat Moisture resistance Load life 2000 h at 70 C: rated power on ceramic PCB Note 1. Measurement error 0.001 R www.vishay.com 2 For any questions, contact: foil@vishay.com PR O DU CT 0.260 (6.60) H 0.070 (1.78) MILLIMETERS 6.35 0.25 4.06 0.25 1.02 maximum 2.03 0.13 1.02 0.25 FIGURE 4 - TYPICAL TCR CURVE Z-FOIL + 500 + 400 + 300 + 200 + 100 R 0 R (ppm) - 100 - 200 - 300 - 400 - 500 - 55 - 25 0 - 0.16 ppm/C 0.05 ppm/C - 0.1 ppm/C 0.1 ppm/C 0.14 ppm/C 0.2 ppm/C + 25 + 60 + 75 + 100 + 125 Ambient Temperature (C) MIL-PRF-55342 R LIMITS 0.10 % 0.10 % 0.10 % 0.10 % 0.2 % 0.2 % 0.5 % TYPICAL R LIMITS 0.005 % (50 ppm) 0.005 % (50 ppm) 0.005 % (50 ppm) 0.01 % (100 ppm) 0.01 % (100 ppm) 0.01 % (100 ppm) 0.02 % (200 ppm) MAXIMUM R LIMITS1) 0.01 % (100 ppm) 0.01 % (100 ppm) 0.02 % (200 ppm) 0.02 % (200 ppm) 0.03 % (300 ppm) 0.03 % (300 ppm) 0.04 % (400 ppm) Document Number: 63094 Revision: 25-Feb-08 VCS1625Z (Z-Foil) Ultra High Precision Z-Foil Surface Mount Current Vishay Foil Resistors Sensing Chip Resistors with TCR of 0.05 ppm/C and Power Coefficient of 5 ppm at Rated Power TABLE 3 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y16071R50000D9W (preferred part number format) DENOTES PRECISION Y VALUE R= AER* 0 = standard part, tin/lead termination 9 = standard part, lead (Pb)-free termination 129 = standard part, gold plated Other = custom Y 1 6 0 7 1 R PRODUCT CODE 1607 = VCS1625Z RESISTANCE TOLERANCE E = 0.2 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % FOR EXAMPLE: ABOVE GLOBAL ORDER Y1607 1R50000 D 9 W: TYPE: VCS1625Z VALUE: 1.5 ABSOLUTE TOLERANCE: 0.5 % TERMINATION: lead (Pb)-free PACKAGING: waffle pack HISTORICAL PART NUMBER: VCS1625Z 1R5000 TCR0.2 D S W (will continue to be used) VCS1625Z MODEL VCS1625Z 1R5000 OHMIC VALUE 1.5 TCR0.2 TCR Characteristic D IM PR O VE D Note * Application engineering release: for non-standard requests, please contact application engineering. Document Number: 63094 Revision: 25-Feb-08 For any questions, contact: foil@vishay.com PR O DU CT 5 0 0 0 0 D 9 W PACKAGING R = tape and reel W = waffle pack S W RESISTANCE TOLERANCE E = 0.2 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % TERMINATION PACKAGING S = lead (Pb)-free B = tin/lead G = gold plated T = tape and reel W = waffle pack www.vishay.com 3 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1 |
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