S Series Vishay Foil Resistors High Precision Foil Resistor with TCR of ± 2.0 ppm/°C, Tolerance of ± 0.005 % and Load Life Stability of ± 0.005 % FEATURES INTRODUCTION Bulk Metal® Foil (BMF) technology outperforms all other resistor technologies available today for applications that require high precision and high stability. This technology has been pioneered and developed by Vishay Foil Resistors (VFR), and products based on this technology are the most suitable for a wide range of applications. BMF technology allows the production of customer-oriented products, designed to satisfy specific challenging technical requirements. The S series of BMF resistors offers low TCR, excellent load life stability, tight tolerance, fast response time, low current noise, low thermal EMF and low voltage coefficient, all in one resistor. The S series is virtually insensitive to destabillizing factors. The resistor element is a solid alloy that displays the desirable bulk properties of its parent material, thus it is inherently stable and noise free. The standard design of these resistors provides a unique combination of characteristics found in no other single resistor. • Temperature coefficient of resistance (TCR): - 55 °C to + 125 °C, 25 °C ref. - S10XC / D series: ± 2 ppm/°C typical (see table 1) - S10XK series: ± 1 ppm/°C typical (see table 1) • Power rating: to 1 W at + 125 °C • Resistance tolerance: to ± 0.005 % (50 ppm) • Load life stability: ± 0.005 % at 70 °C, 2000 h at rated power • Resistance range: 0.5 Ω to 1 MΩ (for higher or lower values, please contact Application Engineering) • Vishay Foil resistors are not restricted to standard values; specific “as required” values can be supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K) • Electrostatic discharge (ESD) at least to 25 kV • Non inductive, non capacitive design • Rise time: 1 ns effectively no ringing • Current noise: 0.010 µVRMS/V of applied voltage (< - 40 dB) • Thermal EMF: 0.05 µV/°C • Voltage coefficient: < 0.1 ppm/V • Low inductance: < 0.08 µH • Non hot-spot design • Terminal finishes available: lead (Pb)-free, tin/lead alloy • Matched sets are available on request (TCR tracking: to 0.5 ppm/°C) • Prototype quantities available in just 5 working days or sooner. For more information, please contact [email protected] • For better TCR performances please review the datasheets for the Z Series and Z203 VFR's application engineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact [email protected]. TABLE 1 - RESISTANCE VERSUS TCR (- 55 °C to + 125 °C, + 25 °C ref.) + 100 ΔR TYPICAL TCR AND MAX SPREAD (ppm/°C) S10X(C) / (D) 80 to < 1M ± 2 ± 2.5 - 100 S10X(K) 80 to < 600K ± 1 ± 2.5 - 150 ± 2 ± 3.5 - 200 S10X(C) / (D) S10X(K) 50 to < 80 0.5 to < 50 ± 1 ± 3.5 ± 2 ± 4.5 ± 1 ± 4.5 –1 ppm/°C + 50 RESISTANCE VALUE (Ω) S10X(K) (2) + 150 RESISTOR(1) (2) S10X(C) / (D) (1) FIGURE 1 - TYPICAL RESISTANCE CHANGE VERSUS TEMPERATURE CURVES AND CHORD SLOPES (TCR) OF TWO ALLOY TYPES IN MILITARY RANGE +1 ppm/°C 0 R (ppm) - 50 –2 ppm/°C +2 ppm/°C - 50 - 55 - 25 C Alloy 2 ppm/°C 0 + 25 K Alloy 1 ppm/°C + 50 + 75 + 100 + 125 Temperature (°C) X refers to S Series model number - see Table 2 (C) and (D) refer to C Foil Alloy Types; (K) refers to the K Foil Alloy type - see Figure 1 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63001 Revision: 29-Jun-11 For any questions, contact: [email protected] www.vishayfoilresistors.com 1 S Series Vishay Foil Resistors FIGURE 2 - STANDARD IMPRINTING AND DIMENSIONS Front View L H W Rear View Optional Customer Part Number Print specification, etc. if required Date Code 01 10 Year Week VFR XXXX S102C XXXXXX 100R01 0.01 % Resistance Value Code Tolerance ST1) SW Model Number LS LL Lead Material #22 AWG Round Solder Coated Copper (Pb - free coating available) Note 1. Standoffs provided to allow proper flushing of flux, debris, and contaminates from under resistor after all solder operations. 2. The standoffs shall be so located as to give a lead clearance of 0.010" minimum between the resistor body and the printed circuit board when the standoffs are seated on the printed circuit board. TABLE 2 - MODEL SELECTION MODEL NUMBER AMBIENT RESISTANCE MAXIMUM POWER RATING AVERAGE RANGE WORKING WEIGHT (Ω) VOLTAGE IN GRAMS at at + 70 °C + 125 °C S102C (S102J) (2) 1 to 150K S102K (S102L) (2) 1 to 100K S104D (S104F) (1) 1 to 500K S104K 1 to 300K S105D (S105F) (1) 1 to 750K S105K 1 to 500K S106D 0.5 to 1M S106K 0.5 to 600K 300 0.6 W 0.3 W up to 100K 0.4 W 0.2 W 0.6 over 100K 350 1.0 W 0.5 W up to 200K 0.6 W 0.3 W 1.4 over 200K 350 1.5 W 0.75 W up to 300K 0.8 W 0.4 W 1.9 over 300K 500 2.0 W 1.0 W up to 400K 1.0 W 0.5 W over 400K 4.0 DIMENSIONS INCHES W: 0.105 ± 0.010 L: 0.300 ± 0.010 H: 0.326 ± 0.010 ST: 0.010 min. SW: 0.040 ± 0.005 LL: 1.000 ± 0.125 LS: 0.150 ± 0.005 W: 0.160 max. L: 0.575 max. H: 0.413 max. ST: 0.035 ± 0.005 SW: 0.050 ± 0.005 LL: 1.000 ± 0.125 LS: 0.400 ± 0.020 W: 0.160 max. L: 0.820 max. H: 0.413 max. ST: 0.035 ± 0.005 SW: 0.050 ± 0.005 LL: 1.000 ± 0.125 LS: 0.650 ± 0.020 W: 0.260 max. L: 1.200 max. H: 0.413 max. ST: 0.035 ± 0.005 SW: 0.050 ± 0.005 LL: 1.000 ± 0.125 LS: 0.900 ± 0.020 mm F (1) (INCHES) 2.67 ± 0.25 7.62 ± 0.25 8.28 ± 0.25 0.254 min. 1.02 ± 0.13 25.4 ± 3.18 3.81 ± 0.13 4.06 max. (0.138) 14.61 max. (0.565) (0.413) 10.49 max. 0.889 ± 0.13 1.27 ± 0.13 25.4 ± 3.18 10.16 ± 0.51 4.06 max. (0.138) 20.83 max. (0.890) (0.413) 10.49 max. 0.889 ± 0.13 1.27 ± 0.13 25.4 ± 3.18 16.51 ± 0.51 (0.7 ± 0.05) 6.60 max. 30.48 max. 10.49 max. 0.889 ± 0.13 1.27 ± 0.13 25.4 ± 3.18 22.86 ± 0.51 TIGHTEST TOLERANCE VS. LOWEST RESISTANCE VALUE 0.005 %/50 Ω 0.01 %/25 Ω 0.02 %/12 Ω 0.05 %/5 Ω 0.1 %/2 Ω 0.50 %/1 Ω 1 %/0.5 Ω Notes (1) S104F and S105F have different package dimensions (see the third column of dimensions). All other specifications are the same. (2) 0.200" (5.08 mm) lead spacing available - specify S102J for S102C, and S102L for S102K. www.vishayfoilresistors.com 2 For any questions, contact: [email protected] Document Number: 63001 Revision: 29-Jun-11 S Series Vishay Foil Resistors Percent of Rated Power at + 125 °C FIGURE 3 - POWER DERATING CURVE 200 % - 55 °C FIGURE 4 - TRIMMING TO VALUES (conceptual illustration) + 70 °C Double Rated Power 175 % 150 % Current Path Before Trimming Interloop Capacitance Reduction in Series 125 % Rated Power Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance 100 % Mutual Inductance Reduction due to Change in Current Direction 75 % 50 % 25 % 0% - 75 - 50 - 25 0 25 50 75 100 125 150 175 200 Ambient Temperature (°C) Note: Foil shown in black, etched spaces in white TABLE 3 - ENVIRONMENTAL PERFORMANCE COMPARISON MIL-PRF-55182 CHAR J S-SERIES MAXIMUM ΔR S-SERIES TYPICAL ΔR Thermal shock, 5 x (- 65 °C to + 150 °C) ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Short time overload, 6.25 x rated power ± 0.2 % ± 0.01 % (100 ppm) ± 0.003 % (30 ppm) Resistance temperature characteristics(1) ± 25 ppm/°C ± 6.5 ppm/°C ± 2.0 ppm/°C Low temperature storage (24 h at - 65 °C) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Low temperature operation (45 min, rated power at - 65 °C) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Terminal strength ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Dielectric Withstanding Voltage (DWV) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Resistance to solder heat ± 0.1 % ± 0.01 % (100 ppm) ± 0.005 % (50 ppm) Moisture resistance ± 0.4 % ± 0.05 % (500 ppm) ± 0.01 % (100 ppm) Shock ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) Vibration ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm) 2000 h ± 0.5 % ± 0.015 % (150 ppm) ± 0.01 % (100 ppm) 10 000 h ± 2.0 % ± 0.05 % (500 ppm) ± 0.03 % (300 ppm) ± 0.5 % ± 0.015 % (150 ppm) ± 0.01 % (100 ppm) ± 2.0 % ± 0.1 % (1000 ppm) ± 0.05 % (500 ppm) 5 ppm/V < 0.1 ppm/V < 0.1 ppm/V Test Group I Test Group II Test Group III Test Group IV Test Group V Life test at 0.3 W/+ 125 °C Test Group Va Life test at 0.6 W (2 x rated power)/+ 70 °C, 2000 h Test Group VI High temperature exposure (2000 h at + 175 °C) Test Group VII Voltage coefficient (1) See Table 1. Document Number: 63001 Revision: 29-Jun-11 For any questions, contact: [email protected] www.vishayfoilresistors.com 3 S Series Vishay Foil Resistors FIGURE 5 - LONG-TERM STABILITY OVER 29 YEARS (0.1W AT 70°C, 50 SAMPLES S102C, 10KΩ) 40 ΔR/R (ppm) 20 0 -20 -40 -60 -80 -100 -120 0 5 10 15 20 25 30 Time (Years) STANDARD OPERATIONS AND TEST CONDITIONS A. Standard Test Operations: By 100 % Inspection • Short-time overload (6.25 x rated power for 5 s) • Resistance - tolerance check • Visual and mechanical By Sample Inspection • TCR • Environmental tests per table 3 on a quarterly basis to establish performance by similarity B. Standard Test Conditions: • Lead test point: 0.5" (12.7 mm) from resistor body • Temperature: + 23 °C ± 2 °C • Relative humidity: per MIL-STD-202 IMPROVED PERFORMANCE TESTING (IPT) The preceding information is based on product directly off the production line. Improved performance (meaning increased time stability with load and other stresses) is available through factory conducted “Improved Performance Testing”. The test routine is usually tailored to the user’s stability objectives and IPT-processed resistors can exhibit improved load-life stability levels of less than 50 ppm. Various screen test routines are available and all anticipated stresses must be taken into account before settling on one specific test routine. VFR's application engineering department is prepared to discuss and recommend appropriate routines given the full spectrum of anticipated stresses and stability requirements. TABLE 4 - “S” SERIES SPECIFICATIONS Stability (1) Load life at 2000 h Load life at 10 000 h Current Noise ± 0.015 % (150 ppm) Maximum ΔR at 0.3 W/+ 125 °C ± 0.005 % (50 ppm) Maximum ΔR at 0.1 W/+ 70 °C ± 0.05 % (500 ppm) Maximum ΔR at 0.3 W/+ 125 °C ± 0.01 % (100 ppm) Maximum ΔR at 0.05 W/+ 125 °C 0.010 µV (RMS)/V of applied voltage (- 40 dB) High Frequency Operation Rise time Inductance (L) 1.0 ns at 1 kΩ (2) 0.1 µH maximum; 0.08 µH typical Capacitance (C) 1.0 pF maximum; 0.5 pF typical Voltage Coefficient < 0.1 ppm/V (3) Thermal Electromotive Force (EMF) (4) 0.1 µV/°C Maximum; 0.05 µV/°C typical 1 µV/W (Model S102C) Notes Load life ΔR maximum can be reduced by 80 %, please contact applications engineering department. Inductance (L) due mainly to the leads. The resolution limit of existing test equipment (within the measurement capability of the equipment, or “essentially zero”.) µV/°C relates to EMF due to lead temperature difference and µV/watt due to power applied to the resistor. (1) (2) (3) (4) www.vishayfoilresistors.com 4 For any questions, contact: [email protected] Document Number: 63001 Revision: 29-Jun-11 S Series Vishay Foil Resistors TABLE 5 - GLOBAL PART NUMBER INFORMATION (1) NEW GLOBAL PART NUMBER: Y000780K5000V9L (preferred part number format) DENOTES PRECISION VALUE CHARACTERISTICS Y R=Ω K = kΩ M = MΩ 0 = standard 9 = lead (Pb)-free 1 to 999 = custom Y 0 0 0 7 8 0 K 5 0 0 0 V 9 PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 0007 = S102C 0785 = S102J 0062 = S102K 0786 = S102L 0011 = S104D 5011 = S104F 0101 = S104K 4101 = S104L 0012 = S105D 4012 = S105F 0102 = S105K 4102 = S105L 0013 = S106D 0103 = S106K V = ± 0.005 % T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % L = bulk pack L FOR EXAMPLE: ABOVE GLOBAL ORDER Y0007 80K5000 V 9 L: TYPE: S102C VALUE: 80.5 kΩ ABSOLUTE TOLERANCE: ± 0.005 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: S102C T 80K500 V B (will continue to be used) S102C T 80K500 V B MODEL TERMINATION S102C S102J S102K S102L S104D S104F S104K S104L S105D S105F S105K S105L S106D S106K T = lead (Pb)-free None = tin/lead alloy RESISTANCE VALUE TOLERANCE 250R00 = 250.00 Ω 5K2310 = 5.231 kΩ 1M000 = 1 MΩ V = ± 0.005 % T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % PACKAGING B = bulk pack Note (1) For non-standard requests, please contact application engineering. Document Number: 63001 Revision: 29-Jun-11 For any questions, contact: [email protected] www.vishayfoilresistors.com 5 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. To the maximum extent permitted by applicable law, Vishay Precision Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Information provided in datasheets and/or specifications may vary from actual results in different applications and performance may vary over time. Statements regarding the suitability of products for certain types of applications are based on Vishay Precision Group’s knowledge of typical requirements that are often placed on Vishay Precision Group products. It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. No license, express, implied, 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 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 No.: 63999 Revision: 27-Apr-11 www.vishaypg.com 1