VCS1625ZP (Z-Foil) Vishay Foil Resistors Ultra High Precision Z-Foil Surface Mount Current Sensing Chip Resistor with Power Rating to 1 W and Temperature Coefficient of Resistance 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) Vishay 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: 1 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 VCS1625ZP 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. IM PR O VE D 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. 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) VCS1625ZP > 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 1 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: 63155 Revision: 29-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 1 VCS1625ZP (Z-Foil) Vishay Foil Resistors FIGURE 2 - DIMENSIONS in Inches (Millimeters) Solder Pad Layout 0.806 (20.47) 0.020 (0.51) I1 E1 I2 E2 B H Top View Bottom View Electrical Schematic 0.020 (0.51) A L 0.250 0.010 H 0.160 0.010 W 0.040 maximum A 0.080 0.005 B 0.040 0.010 I2 E2 0.260 (6.60) 6.35 0.25 4.06 0.25 1.02 maximum 2.03 0.13 1.02 0.25 IM PR O VE D FIGURE 4 - TYPICAL TCR CURVE Z-FOIL + 500 + 400 + 300 Current Path Before Trimming 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 R MILLIMETERS FIGURE 3 - TRIMMING TO VALUES (Conceptual Illustration) Interloop Capacitance Reduction in Series E1 0.070 (1.78) Solder Coated Pads (Windows in Solder Mask) INCHES I1 0.806 (20.47) Mounting Pads (4) 0.200 (5.08) W PR O DU CT L 0.070 (1.78) 2 oz. Copper (70 Microns) Coated by Solder mask + 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 TEST 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: at 1 W 0.5 % 0.02 % (200 ppm) 0.04 % (400 ppm) Note (1) Measurement error 0.001R www.foilresistors.com 2 For any questions, contact: foil@vishaypg.com Document Number: 63155 Revision: 29-Mar-10 VCS1625ZP (Z-Foil) Vishay Foil Resistors TABLE 3 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y16061R50000D9W (preferred part number format) DENOTES PRECISION 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 6 1 R 5 0 0 0 0 D 9 W PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 1606 = VCS1625ZP 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: VCS1625ZP VALUE: 1.5 ABSOLUTE TOLERANCE: 0.5 % TERMINATION: lead (Pb)-free PACKAGING: waffle pack HISTORICAL PART NUMBER: VCS1625ZP 1R5000 TCR0.2 D S W (will continue to be used) VCS1625ZP 1R5000 TCR0.2 D S W MODEL OHMIC VALUE TCR RESISTANCE TOLERANCE TERMINATION PACKAGING VCS1625ZP 1.5 Characteristic 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: 63155 Revision: 29-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 3 Legal Disclaimer Notice Vishay Precision Group Disclaimer All 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. Vishay Precision Group 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 Precision Group'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 Precision Group. 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 Precision Group products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group 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: 63999 Revision: 22-Feb-10 www.vishaypg.com 1