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) vsmp series (0805, 1206, 15 06, 2010, 2512) (z-foil) vishay foil resistors document number: 63060 for any questions, contact: foil@vishaypg.com www.foilresistors.com revision: 25-mar-10 1 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 param eters influencing stability is the temperature coefficient of resistance (tcr). although the tcr of foil resistors is considered extremely low, this characteristic has been furthe r 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 sensitiv ity to ambient temperature variations (tcr) and to self heating when power is applied (power coefficient). along wi th the inherently low pcr and tcr, z-foil technology also pr ovides 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. note (1) for tighter performances and non- standard values up to 150k, please contact vishay applicat ion engineering using the e-mail addresses in the footer below. features ? 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 ? r 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 to 125 k (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 h ? 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 foil@vishaypg.com ? for better performances please contact us 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 * pb containing terminations are not rohs compliant, exemptions may apply table 1 - tolerance and tcr vs. resistance value (1) (- 55 c to + 125 c, + 25 c ref.) resistance value ( ) tolerance (%) typical tcr and max. spread (ppm/c) 250 to 125k 0.01 0.2 1.8 100 to < 250 0.02 0.2 1.8 50 to < 100 0.05 0.2 2.8 25 to < 50 0.1 0.2 3.8 10 to < 25 0.25 0.2 3.8 top view figure 1 - power derating curve 100 75 50 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 ambient temperature (c) percent of rated power + 70 c - 55 c
vsmp series (0805, 1206, 1506, 2010, 2512) (z-foil) vishay foil resistors www.foilresistors.com for any questions, contact: foil@vishaypg.com document number: 63060 2 revision: 25-mar-10 note (1) land pattern dimensions are per ipc-7351a note (1) as shown + 0.01 to allow for measurement errors at low values. figure 2 - trimming to values (conceptual illustration) m u t u al ind u ctance red u ction d u e to change in c u rrent direction c u rrent path before trimming note: foil sho w n in b lack, etched spaces in w hite interloop capacitance red u ction in series trimming process remo v es this material from shorting strip area changing c u rrent path and increasing resistance c u rrent path after trimming figure 3 - typical resistance/ temperature curve note ? the tcr values for < 100 are influenced by the termination composition and result in deviation from this curve. + 200 + 100 0 - 100 - 200 - 300 - 500 - 55 - 25 + 25 + 60 + 75 + 100 + 125 r r (ppm) 0 0.05 ppm/c - 0.1 ppm/c 0.1 ppm/c 0.14 ppm/c 0.2 ppm/c - 0.16 ppm/c - 400 + 300 + 400 ambient temperature (c) and tcr chord slopes for different temperature ran g es table 2 - dimensions and land pattern in inches (millimeters) chip size l 0.005 (0.13) w 0.005 (0.13) thickness maximum d 0.005 (0.13) z (1) g (1) x (1) 0805 0.080 (2.03) 0.050 (1.27) 0.025 (0.64) 0.015 (0.38) 0.122 (3.10) 0.028 (0.71) 0.050 (1.27) 1206 0.126 (3.20) 0.062 (1.57) 0.025 (0.64) 0.020 (0.51) 0.175 (4.45) 0.059 (1.50) 0.071 (1.80) 1506 0.150 (3.81) 0.062 (1.57) 0.025 (0.64) 0.020 (0.51) 0.199 (5.05) 0.083 (2.11) 0.071 (1.80) 2010 0.198 (5.03) 0.097 (2.46) 0.025 (0.64) 0.025 (0.64) 0.247 (6.27) 0.115 (2.92) 0.103 (2.62) 2512 0.249 (6.32) 0.127 (3.23) 0.025 (0.64) 0.032 (0.81) 0.291 (7.39) 0.150 (3.81) 0.127 (3.23) top view d t w l recommended land pattern footprint z g x table 3 - specifications chip size rated power (mw) at + 70 c max. working voltage ( ) resistance range ( ) maximum weight (mg) 0805 200 40 v 10 to 8k 6 1206 300 87 v 10 to 25k 11 1506 300 95 v 10 to 30k 12 2010 500 187 v 10 to 70k 27 2512 750 220 v 10 to 125k 40 pr table 4 - load life stability (+ 70 c for 2000 h) chip size maximum r limits 0805 0.005 % at 100 mw 0.01 % at 200 mw 1206, 1506 0.005 % at 150 mw 0.01 % at 300 mw 2010 0.005 % at 200 mw 0.01 % at 500 mw 2512 0.005 % at 500 mw 0.01 % at 750 mw table 5 - performances test or conditions mil-prf-55342 characteristic e r limits typical r limits maximum r limits (1) thermal shock, 100 x (- 65 c to + 150 c) 0.1 % 0.005 % (50 ppm) 0.01 % (100 ppm) low temperature operation, - 65 c, 45 min at p nom 0.1 % 0.005 % (50 ppm) 0.01 % (100 ppm) short time overload, 6.25 x rated power, 5 s 0.1 % 0.005 % (50 ppm) 0.01 % (100 ppm) high temperature exposure, + 150 c, 100 h 0.1 % 0.01 % (100 ppm) 0.02 % (200 ppm) resistance to soldering heat 0.2 % 0.005 % (50 ppm) 0.01 % (100 ppm) moisture resistance 0.2 % 0.005 % (50 ppm) 0.02 % (200 ppm) load life stability + 70 c for 2000 h at rated power 0.5 % 0.005 % (50 ppm) 0.01 % (100 ppm)
vsmp series (0805, 1206, 15 06, 2010, 2512) (z-foil) vishay foil resistors document number: 63060 for any questions, contact: foil@vishaypg.com www.foilresistors.com revision: 25-mar-10 3 notes (1) avoid the use of cleaning agents which could attack epox y resins, which form part of the resistor construction (2) vacuum pick up is recommended for handling (3) soldering iron may damage the resistor note (1) for non-standard requests, please contact application engineering. figure 4 - recommended mounting (1)(2)(3) 25 % to 8 5 % of t a lo w profile solder fillet is recommended to a v oid u nnecessary stresses along top edge of metallization. ir and v apor phase reflo w are b est. table 6 - global part number information (1) new global part number: y162612k7560t9r (preferred part number format) denotes precision value characteristics yr = k = k 0 = standard 9 = lead (pb)-free 1 to 999 = custom 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 k 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 k 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 6261 k75 2 y1 t9 6 r 0
vishay precision group document no.: 63999 revision: 27-apr-11 www.vishaypg.com 1 legal disclaimer notice all products, product specifications and data are subject to change without notice. vishay precision group, inc., its affliates, 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 specifcations do not expand or otherwise modify vishay precision groups 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 ftness for particular purpose, non-infringement and merchantability. information provided in datasheets and/or specifcations 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 groups knowledge of typical requirements that are often placed on vishay precision group products. it is the customers responsibility to validate that a particular product with the properties described in the product specifcation 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. legal disclaimer notice disclaimer document no.: 63999 revision: 27-apr-11
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