VSMP Series (0805, 1206, 1506, 2010, 2512) (Z-Foil) Vishay Foil Resistors Ultra High Precision Foil Wraparound Surface Mount Chip Resistor with TCR of ± 0.05 ppm/°C and Power Coefficient of 5 ppm at Rated Power and Load Life Stability of ± 0.005 % (50 ppm) FEATURES INTRODUCTION VSMP Series is the industry’s first device to provide high rated power, excellent load life stability along with extremely low TCR all in one resistor. One of the most important parameters influencing stability is the temperature coefficient of resistance (TCR). Although the TCR of foil resistors is considered extremely low, this characteristic has been further refined over the years. The VSMP Series utilizes ultra high precision Bulk Metal® Z-foil. The Z-foil technology provides a significant reduction of the resistive element’s sensitivity to ambient temperature variations (TCR) and to self heating when power is applied (power coefficient). Along with the inherently low PCR and TCR, Z-foil technology also provides remarkably improved load life stability, low noise and availability of tight tolerance. The VSMP has a full wraparound termination which ensures safe handling during the manufacturing process, as well as providing stability during multiple thermal cyclings. Our application engineering department is available to advise and make recommendations. For non-standard technical requirements and special applications, please contact us using the e-mail address in the footer below. TABLE 1 - TOLERANCE AND TCR VS. RESISTANCE VALUE (1) (- 55 °C to + 125 °C, + 25 °C Ref.) RESISTANCE VALUE (Ω) 250 to 125K 100 to < 250 50 to < 100 25 to < 50 10 to < 25 TOLERANCE (%) ± 0.01 ± 0.02 ± 0.05 ± 0.1 ± 0.25 APPLICATIONS • • • • • Automatic test equipment (ATE) High precision instrumentation Laboratory, industrial and medical Audio EB applications (electron beam scanning and recording equipment, electron microscopes) • Down hole instrumentation • Communication TYPICAL TCR AND MAX. SPREAD (ppm/°C) ± 0.2 ± 1.8 ± 0.2 ± 1.8 ± 0.2 ± 2.8 ± 0.2 ± 3.8 ± 0.2 ± 3.8 Note (1) For tighter performances and non-standard values up to 150K, please contact Vishay application engineering using the e-mail addresses in the footer below. FIGURE 1 - POWER DERATING CURVE Percent of Rated Power Top View • 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.) • Tolerance: to ± 0.01 % • Power coefficient “ΔR due to self heating”: 5 ppm at rated power • Power rating: to 750 mW at + 70 °C • Load life stability: to ± 0.005 % at 70 °C, 2000 h at rated power • Resistance range: 10 Ω to 125 kΩ (for higher and 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. 1K2345 vs. 1K) • Fast thermal stabilization < 1 s • Electrostatic discharge (ESD) up to 25 000 V • Short time overload: ≤ 0.005 % • Non inductive, non capacitive design • Rise time: 1 ns effectively no ringing • Current noise: - 42 dB • Voltage coefficient < 0.1 ppm/V • Non inductive: < 0.08 µH • Non hot spot design • Terminal finishes available: lead (Pb)-free, tin/lead alloy • Compliant to RoHS directive 2002/95/EC • Matched sets are available on request • Prototype quantities available in just 5 working days or sooner. For more information, please contact [email protected] • For better performances please contact us + 70 °C - 55 °C 100 75 50 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature (°C) * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63060 Revision: 25-Mar-10 For any questions, contact: [email protected] www.foilresistors.com 1 VSMP Series (0805, 1206, 1506, 2010, 2512) (Z-Foil) Vishay Foil Resistors FIGURE 2 - TRIMMING TO VALUES (Conceptual Illustration) FIGURE 3 - TYPICAL RESISTANCE/ TEMPERATURE CURVE + 400 + 300 + 200 Current Path Before Trimming Interloop Capacitance Reduction in Series + 100 ΔR 0 R (ppm) - 100 Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance Mutual Inductance Reduction due to Change in Current Direction Note: Foil shown in black, etched spaces in white 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 + 25 + 60 + 75 + 100 + 125 0 Ambient Temperature (°C) and TCR Chord Slopes for Different Temperature Ranges Note • The TCR values for < 100 Ω are influenced by the termination composition and result in deviation from this curve. TABLE 2 - DIMENSIONS AND LAND PATTERN in Inches (Millimeters) Recommended Land Pattern Top View L X G W T Footprint Z D CHIP SIZE 0805 1206 1506 2010 2512 L ± 0.005 (0.13) 0.080 (2.03) 0.126 (3.20) 0.150 (3.81) 0.198 (5.03) 0.249 (6.32) W ± 0.005 (0.13) 0.050 (1.27) 0.062 (1.57) 0.062 (1.57) 0.097 (2.46) 0.127 (3.23) THICKNESS MAXIMUM 0.025 (0.64) 0.025 (0.64) 0.025 (0.64) 0.025 (0.64) 0.025 (0.64) D ± 0.005 (0.13) 0.015 (0.38) 0.020 (0.51) 0.020 (0.51) 0.025 (0.64) 0.032 (0.81) Z (1) G (1) X (1) 0.122 (3.10) 0.175 (4.45) 0.199 (5.05) 0.247 (6.27) 0.291 (7.39) 0.028 (0.71) 0.059 (1.50) 0.083 (2.11) 0.115 (2.92) 0.150 (3.81) 0.050 (1.27) 0.071 (1.80) 0.071 (1.80) 0.103 (2.62) 0.127 (3.23) Note (1) Land Pattern Dimensions are per IPC-7351A TABLE 3 - SPECIFICATIONS CHIP SIZE RATED POWER (mW) at + 70 °C MAX. WORKING VOLTAGE (≤ P × R ) RESISTANCE RANGE (Ω) MAXIMUM WEIGHT (mg) 0805 1206 1506 2010 2512 200 300 300 500 750 40 V 87 V 95 V 187 V 220 V 10 to 8K 10 to 25K 10 to 30K 10 to 70K 10 to 125K 6 11 12 27 40 TABLE 4 - LOAD LIFE STABILITY (+ 70 °C for 2000 h) CHIP SIZE 0805 1206, 1506 2010 2512 MAXIMUM ΔR LIMITS ± 0.005 % at 100 mW ± 0.01 % at 200 mW ± 0.005 % at 150 mW ± 0.01 % at 300 mW ± 0.005 % at 200 mW ± 0.01 % at 500 mW ± 0.005 % at 500 mW ± 0.01 % at 750 mW TABLE 5 - PERFORMANCES TEST OR CONDITIONS MIL-PRF-55342 CHARACTERISTIC E ΔR LIMITS ± 0.1 % ± 0.1 % ± 0.1 % ± 0.1 % ± 0.2 % ± 0.2 % ± 0.5 % Thermal Shock, 100 x (- 65 °C to + 150 °C) Low Temperature Operation, - 65 °C, 45 min at Pnom Short Time Overload, 6.25 x Rated Power, 5 s High Temperature Exposure, + 150 °C, 100 h Resistance to Soldering Heat Moisture Resistance Load Life Stability + 70 °C for 2000 h at Rated Power Note (1) As shown + 0.01 Ω to allow for measurement errors at low values. www.foilresistors.com 2 For any questions, contact: [email protected] TYPICAL ΔR LIMITS ± 0.005 % (50 ppm) ± 0.005 % (50 ppm) ± 0.005 % (50 ppm) ± 0.01 % (100 ppm) ± 0.005 % (50 ppm) ± 0.005 % (50 ppm) ± 0.005 % (50 ppm) MAXIMUM ΔR LIMITS (1) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) ± 0.01 % (100 ppm) ± 0.02 % (200 ppm) ± 0.01 % (100 ppm) ± 0.02 % (200 ppm) ± 0.01 % (100 ppm) Document Number: 63060 Revision: 25-Mar-10 VSMP Series (0805, 1206, 1506, 2010, 2512) (Z-Foil) Vishay Foil Resistors FIGURE 4 - RECOMMENDED MOUNTING (1)(2)(3) 25 % to 85 % of T A low profile solder fillet is recommended to avoid unnecessary stresses along top edge of metallization. IR and vapor phase reflow are best. Notes (1) Avoid the use of cleaning agents which could attack epoxy resins, which form part of the resistor construction (2) Vacuum pick up is recommended for handling (3) Soldering iron may damage the resistor TABLE 6 - GLOBAL PART NUMBER INFORMATION (1) NEW GLOBAL PART NUMBER: Y162612K7560T9R (preferred part number format) DENOTES PRECISION VALUE CHARACTERISTICS Y R=Ω K = kΩ 0 = standard 9 = lead (Pb)-free 1 to 999 = custom Y 1 6 2 6 1 2 K 7 5 6 0 T 9 R PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 1624 = VSMP0805 1625 = VSMP1206 1626 = VSMP1506 1627 = VSMP2010 1628 = VSMP2512 T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.10 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % R = tape and reel W = waffle pack FOR EXAMPLE: ABOVE GLOBAL ORDER Y1626 12K7560 T 9 R: TYPE: VSMP1506 VALUES: 12.7560 kΩ ABSOLUTE TOLERANCE: 0.01 % TERMINATION: lead (Pb)-free PACKAGING: tape and reel HISTORICAL PART NUMBER: VSMP1506 12K756 TCR0.2 T S T (will continue to be used) VSMP1506 12K756 TCR0.2 T S T MODEL RESISTANCE VALUE TCR CHARACTERISTICS TOLERANCE TERMINATION PACKAGING VSMP0805 VSMP1206 VSMP1506 VSMP2010 VSMP2512 12.756 kΩ T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.10 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % S = lead (Pb)-free B = tin/lead T = tape and reel W = waffle pack Note For non-standard requests, please contact application engineering. (1) Document Number: 63060 Revision: 25-Mar-10 For any questions, contact: [email protected] 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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