VCS1625Z (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount Current Sensing Chip Resistor with TCR of 0.05 ppm/C and Power Coefficient of 5 ppm at Rated Power FEATURES PR O DU CT Temperature coefficient of resistance (TCR): 0.05 ppm/C typical (0 C to + 60 C) 0.2 ppm/C typical (- 55 C to + 125 C, + 25 C ref.) (see table 1) Resistance range: 0.3 to 10 (for higher or lower values please contact us) Foil resistors are not restricted to standard values, we can supply specific "as required" values at no extra cost or delivery (e.g. 1.234 vs. 1 ) Tolerance: to 0.2 % 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) up to 25 000 V Short time overload < 0.005 % Power rating: 0.5 W at + 70 C (figure 1) Non inductive, non capacitive design Rise time: 1 ns effectively no 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 Prototype samples available from 72 h. For more information, please contact foil@vishaypg.com For better performances please contact us 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. IM PR O VE D Our application engineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us. TERMINATIONS Two lead (Pb)-free options are available: gold plated or tin plated Tin/lead plated Percent of Rated Power FIGURE 1 - POWER DERATING CURVE APPLICATIONS + 70 C - 55 C Military R I Medical Automatic test equipment (ATE) E E Airborne (in heads-up display I V systems) High precision instrumentation Electron beam recording equipment Electron microscopes Current sensing applications Forced balance electronic scales Applications that require superior frequency stability 100 75 1 50 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (C) 1 2 I I2 TABLE 1 - SPECIFICATIONS (2) MODEL NUMBER RESISTANCE RANGE RESISTANCE TOLERANCE TYPICAL TCR and MAX. SPREAD (- 55 C to + 125 C, + 25 C) POWER RATING at + 70 C (1) MAXIMUM CURRENT (1) VCS1625Z > 2.0 to 10 0.3 to 2.0 0.2 %, 0.5 %; 1.0 % 0.5 %; 1.0 % 0.2 2.8 ppm/C 0.5 W on FR4 PCB 5A Notes (1) Whichever is lower (2) Tighter performances are available. Please contact application engineering foil@vishaypg.com * Pb containing materials are not RoHS compliant, exemptions may apply Document Number: 63094 Revision: 23-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 1 VCS1625Z (Z-Foil) Vishay Foil Resistors FIGURE 2 - DIMENSIONS in inches (millimeters) Solder Pad Layout E1 H E2 I2 Top View Bottom View INCHES L 0.250 0.010 H 0.160 0.010 W 0.040 maximum A 0.080 0.005 B 0.040 0.010 I1 B 0.070 (1.78) I1 0.200 (5.08) W Electrical Schematic A 0.070 (1.78) E1 PR O DU CT L Mounting Pads (4) R E2 I2 0.260 (6.60) MILLIMETERS 6.35 0.25 4.06 0.25 1.02 maximum 2.03 0.13 1.02 0.25 FIGURE 3 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 4 - TYPICAL TCR CURVE Z-FOIL + 500 + 400 + 300 Current Path Before Trimming IM PR O VE D Interloop Capacitance Reduction in Series Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Opposing Current in Adjacent Lines + 200 + 100 R 0 R (ppm) - 100 0.05 ppm/C - 200 - 0.1 ppm/C 0.1 ppm/C - 300 0.14 ppm/C - 400 0.2 ppm/C - 0.16 ppm/C - 500 - 55 - 25 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (C) Note: Foil shown in black, etched spaces in white TABLE 2 - PERFORMANCE SPECIFICATIONS MIL-PRF-55342 R LIMITS TYPICAL R LIMITS MAXIMUM R LIMITS (1) Thermal shock 5 x (- 65 C to + 150 C) 0.10 % 0.005 % (50 ppm) 0.01 % (100 ppm) Low temperature operation 0.10 % 0.005 % (50 ppm) 0.01 % (100 ppm) Short time overload 0.10 % 0.005 % (50 ppm) 0.02 % (200 ppm) High temperature exposure 0.10 % 0.01 % (100 ppm) 0.02 % (200 ppm) Resistance to soldering heat 0.2 % 0.01 % (100 ppm) 0.03 % (300 ppm) Moisture resistance 0.2 % 0.01 % (100 ppm) 0.03 % (300 ppm) Load life 2000 h at 70 C: rated power on ceramic PCB 0.5 % 0.02 % (200 ppm) 0.04 % (400 ppm) TEST Note (1) Measurement error 0.001R www.foilresistors.com 2 For any questions, contact: foil@vishaypg.com Document Number: 63094 Revision: 23-Mar-10 VCS1625Z (Z-Foil) Vishay Foil Resistors TABLE 3 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y16071R50000D9W (preferred part number format) VALUE CHARACTERISTICS (1) Y R= 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 PR O DU CT DENOTES PRECISION 5 0 0 0 0 D 9 W PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 1607 = VCS1625Z E = 0.2 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % R = tape and reel W = waffle pack 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) 1R5000 TCR0.2 MODEL OHMIC VALUE TCR VCS1625Z 1.5 Characteristic IM PR O VE D VCS1625Z D S W RESISTANCE TOLERANCE TERMINATION PACKAGING S = lead (Pb)-free B = tin/lead G = gold plated T = tape and reel W = waffle pack E = 0.2 % D = 0.5 % F = 1.0 % G = 2.0 % J = 5.0 % Note (1) Application engineering release: for non-standard requests, please contact application engineering. Document Number: 63094 Revision: 23-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 3 Legal Disclaimer Notice Vishay Precision Group Disclaimer ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE. Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay Precision Group"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. The product specifications do not expand or otherwise modify Vishay Precision Group's terms and conditions of purchase, including but not limited to, the warranty expressed therein. Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase. 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