VCS232Z (Z-Foil Technology) Vishay Foil Resistors Ultra High Precision Z-Foil Power Current Sensing Resistor with Absolute TCR of ± 0.05 ppm/°C and Load Life Stability to ± 0.005% FEATURES Product may not be to scale P R O D U C T Any value at any tolerance available with resistance range INTRODUCTION VCS232Z is the industry’s first device to prove high rated power, excellent load life stability along with low TCR and all in one resistor. The New Z-Foil Technology provides a significant reduction of the resistive components sensitivity to ambient temperature variations (TCR) and applied power changes (PCR). The latest development in Foil resistors technology have reduced the temperature coefficient of Resistance (TCR), to below ± 0.2 ppm/°C (part per million per degree centigrade). ± 0.05 ppm/°C Absolute TCR removes error due to temperature gradients. By taking advantage of the overall stability and reliability of Vishay Bulk Metal® Z-Foil resistors, designers can significantly reduce circuit errors and greatly improve overall circuit performances. Model VCS232Z is a 4 lead kelvin connected device. Our Application Engineering Department is available to advise and make recommendations for non-standard technical requirements and special applications. Please contact us. FIGURE 1 - TRIMMING TO VALUES (CONCEPTUAL ILLUSTRATION) Current Path Before Trimming Current Path After Trimming N E W THROUGH HOLE • Temperature Coefficient of Resistance (TCR): ± 0.05 ppm/°C (Industrial range) Pb-free Available ± 0.2 ppm/°C (MIL range) RoHS* • Resistance Range: 0.25Ω to 500Ω COMPLIANT • Power Coefficient “ΔR due to self heating”: 4 ppm/W typical • Load Life stability: < ± 0.005% 2W at 25°C for 2000 hours • Power rating @ + 25°C: 2 Watts • Tolerance: to ± 0.02% • Electrostatic Discharge (ESD) above 25 000 Volts • Short Time overload ≤ ± 0.005% • Non hot spot design • Thermal EMF: 0.05µV/°C • Rise time: 1ns without ringing • Current Noise < - 40dB • Non Inductive/Capacitive design • Voltage Coefficient < 0.1 ppm/V • Thermal Finishes available Lead (Pb)-free Tin/Lead Alloy • Maximum current: 3 Amps • For better performances please contact us Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance APPLICATIONS • • • • • • • • Automatic Test Equipment (ATE) High Precision Instrumentation Electron Beam application Current Sensing applications Pulse applications Military Power amplifier Power supplies I1 E1 E2 I2 NOTE: Foil shown in black, etched spaces in white FIGURE 2 - DIMENSIONS in inches (millimeters) L W H D2 D1 LL LS LT Tin/Lead or Lead (Pb)-free Solder coated copper leads Dimensions - Maximum Inches (mm) - unless otherwise noted MODEL L H W LL (Minimum) LS ± 0.20 (± 0.5) LT ± 0.20 (± 0.5) D1 (Nominal) D2 (Nominal) VCS232Z 1.240 (32.0) 0.512 (13.0) 0.177 (4.50) 0.500 (12.7) 0.688 (17.5) 1.083 (27.5) 0.040 (1.00) 0.032 (0.80) * Pb containing terminations are not RoHS compliant, exemptions may apply SALES • ASIA/JAPAN: [email protected] • UK/HOLLAND/SCANDINAVIA: [email protected] • AMERICAS: [email protected] • GERMANY/CZECH REPUBLIC/AUSTRIA: [email protected] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [email protected] • ISRAEL: [email protected] Document Number: 63095 Revision: 08-Aug-06 For technical questions, contact: [email protected] www.vishay.com 111 VCS232Z (Z-Foil Technology) Vishay Foil Resistors Ultra High Precision Z-Foil Power Current Sensing Resistor with Absolute TCR of ± 0.05 ppm/°C and Load Life Stability to ± 0.005% TYPICAL ΔR MAXIMUM ΔR Low temperature storage 24 hours @ - 55°C ± 0.002% (20 ppm) ± 0.005% (50 ppm) Short time overload 6.25 x rated power ± 0.002% (20 ppm) ± 0.005% (50 ppm) TEST OR CONDITION ± 0.002% (20 ppm) ± 0.005% (50 ppm) Moisture resistance ± 0.01% (100 ppm) ± 0.02% (200 ppm) ± 0.002% (20 ppm) ± 0.005% (50 ppm) Terminal Strength Load life (2 Watt, + 25°C, 2000 hours) P R O D U C T DWV High temperature exposure 2000 hours @ + 150°C * Measurement error 0.0005R - 55 °C Percent of Rated Power + 25°C + 75 ± 0.01% (100 ppm) ± 0.01% (100 ppm) ± 0.02% (200 ppm) FIGURE 4 - TYPICAL TCR CURVE Z-FOIL (for more details see table 2) FIGURE 3 - POWER DERATING CURVE + 100 ± 0.005% (50 ppm) + 500 + 50 + 400 + 25 + 300 + 200 0 - 50 0 + 50 + 100 + 150 + 200 + 100 ΔR 0 R (ppm) - 100 Ambient Temperature (°C) (Further Derating Not Necessary) 0.05 ppm/°C - 200 RESISTANCE RANGE (Ω) TIGHTEST RESISTANCE TOLERANCE - 0.1 ppm/°C 0.1 ppm/°C - 300 TABLE 2 - VCS232Z 0.14 ppm/°C - 400 - 500 TYPICAL TCR AND MAX. SPREAD (ppm/°C)* 0.25 to < 10 ± 0.05% ± 0.2 ppm/°C ± 2.8 ppm/°C 10 to 500 ± 0.02% ± 0.2 ppm/°C ± 1.8 ppm/°C 0.2 ppm/°C - 0.16 ppm/°C - 55 - 25 0 + 25 + 60 + 75 + 100 + 125 Ambient Temperature (°C) Weight = 1.2 gms Maximum * MIL-Range (- 55°C to + 125°C, + 25°C Ref.) Contact Applications Engineering for other available values N E W TABLE 3 - ORDERING INFORMATION MODEL VCS232Z RESISTANCE VALUE RESISTANCE RANGE 0.25Ω to < 500Ω LETTER MULTIPLIER DESIGNATOR FACTOR R TERMINATION ABSOLUTE TCR T = Lead (Pb)-free none = Tin/Lead Alloy TCR0.2 X 1.0 Example: 249R00 = 249Ω ABSOLUTE TOLERANCE Q= A= B= C= D= F= 0.02% 0.05% 0.1% 0.25% 0.5% 1% PACKAGING B = Bulk * Specify the resistance value for each resistor of the network - even if all values are the same. Example: VCS232ZT1R0000TCR0.2AB Model: VCS232Z (Z-Foil) Value: R1 = 1Ω Termination: Lead (Pb)-free TCR0.2: 0.2 ppm/°C typical refers to any value in the resistance range Tolerance: Absolute = 0.05% Packaging: Bulk Pack SALES • AMERICAS: [email protected] • ASIA/JAPAN: [email protected] • UK/HOLLAND/SCANDINAVIA: [email protected] • GERMANY/CZECH REPUBLIC/AUSTRIA: [email protected] • FRANCE/SWITZERLAND/SOUTHERN EUROPE: [email protected] • ISRAEL: [email protected] www.vishay.com 112 For technical questions, contact: [email protected] Document Number: 63095 Revision: 08-Aug-06 THROUGH HOLE TABLE 1 - PERFORMANCES* Legal Disclaimer Notice Vishay Notice Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc., or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Vishay for any damages resulting from such improper use or sale. Document Number: 91000 Revision: 08-Apr-05 www.vishay.com 1