top view (for date code print specific ation please refer to table 2) 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 (0603, 0805, 1206, 1506, 2010, 20 18, 2512) (z-foil) vishay foil resistors document number: 63060 for any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com revision: 29-oct-2012 1 introduction vsmp series is the industry?s first device to provide high rated power and excellent lo ad life stability along with extremely low tcr ? all in one resistor. one of the most important param eters i nfluencing stability is the temperature coefficient of resistance (tcr). although the tcr of foil resistors is c onsidered 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 of resistance, or pcr). along with the inherently low pcr and tcr, z-foil technology also provides remarkably improved load life stability, low noise and tight tolerances. the vsmp resistor has a full wraparound termination which assure s secure contact during the manufacturing process, as well as providing stability during multiple thermal cyclings. vishay foil resistors' (vfr) application engineering de partment is available to advise and make recommendations. for non-standard technical requirements and special applications, please contact vfr 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 ( ? ) tolerance (% ) typical tcr and max. spread (pp m/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 5 to < 10 0.5 0.2 7.8 note (1) for tighter performances and non-standard values lower than 5 ?? and above 125k, please cont act vf r?s application 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.) ? resistance tolerance: to 0.01 % ? po wer coefficient ? ? r due to self heating?: ? 5 ppm at rated power ? po wer rating: to 750 mw at + 70 c (see table 3) ? l oad life stability: to 0.005 % at 70 c, 2000 h at rated power ? r esistance range: 5 ?? to 125 k ?? (for lower or higher values, please contact us) ? vi shay 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) ? the rmal stabilization time < 1 s ? (nominal value achieved within 10 ppm of steady state value) ? elec trostatic discharge (esd) at least to 25 kv ? sh ort time overload: ? 0.005 % ? n on inductive, non capacitive design ? r ise time: 1 ns effectively no ringing ? c urrent noise: 0.010 v rms /v of applied voltage ? (< - 40 db) ? vo ltage coefficient < 0.1 ppm/v ? no n inductive: < 0.08 h ? n on hot spot design ? t erminal finishes available: lead (pb)-free, tin/lead alloy ? ma tched sets are available on request ? pro totype quantities available in just 5 working days or sooner. for more information, please contact foil@vishaypg.com 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 * pb containing terminations are not rohs compliant; exemptions may apply
figure 2 - trimming to values ? (conceptual illustration) mutual inductance reduction due to change in current direction current path before trimming note: foil shown in black, etched spaces in white interloop capacitance reduction in series trimming process removes this material from shorting strip area changing current path and increasing resistance current path after trimming figure 3 - typical resistance/ temperature 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 ranges note ? the tcr values for < 100 ? are influenced by the termination composition and result in deviation from this curve table 2 - dimensions and land pattern in inches (millimeters) top view d t w l date code 2 (year/week) recommended land pattern footprint z g x 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) 0603 0.063 (1.60) 0.032 (0.81) 0.025 (0.64) 0.011 (0.28) 0.102 (2.59) 0.031 (0.78) 0.031(0.78) 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) 2018 0.204 (5.18) 0.184 (4.67) 0.025 (0.64) 0.018 (0.46) 0.248 (6.3) 0.146 (3.71) 0.184 (4.67) 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) vsmp series (0603, 08 05, 1206, 1506, 2010, 2018, 2512) (z-foil) vishay foil resistors www.vishayfoilresistors.com f or any questions, contact: foil@vishaypg.com document number: 63060 2 revision: 29-oct-2012 note (1) land pattern dimensions are per ipc-7351a (2) the date code printing applies to al l resistor sizes except for 0603 table 3 - specifications chip ? size rated pow er (mw) at + 70 c max. wo rking voltage ( ?? pr ? ) resistance ran ge ( ? )* maximum weight (mg ) 0603 100 20 v 100 to 4k 3 0805 200 40 v 5? to 8k 6 1206 300 87 v 5? to 25k 11 1506 300 95 v 5? to 30k 12 2010 500 187 v 5? to 70k 27 2018 750 122 v 5? to 20k 40 2512 750 220 v 5? to 125k 40 * for non standard values pleas e contact vfr?s a pplication engineering using the e-mail ad dresses in the footer below. table 4 - load life stability ? (+ 70 c for 2000 h) chip size maximum ? r limits 0603 0.005 % at 50 mw ? 0.01 % at 100 mw 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 2018 0.005 % at 500 mw ? 0.01 % at 750 mw 2512 0.005 % at 500 mw ? 0.01 % at 750 mw
table 5 - performances ? test or conditions mil-prf-55342 cha racteristic 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 (0603, 0805, 1206, 1506, 2010, 20 18, 2512) (z-foil) vishay foil resistors document number: 63060 for any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com revision: 29-oct-2012 3 note (1) as shown + 0.01 ? to allow for measurement errors at low values figure 4 - recommended mounting notes (1) ir and vapor phase reflow are recommended. (2) avoid the use of cleaning agents which coul d attack epoxy resins, which form part of the resistor construction (3) vacuum pick up is recommended for handling (4) if the use of a soldering iron becomes necessary, precautionar y measures should be taken to avoid any possible damage / overheating of the resistor * recommendation: the solder fillet profile should be such as to avoid running over the top metallization * figure 5 - vsmp0603 100 cycle thermal shock - 65 c to 150 c, 10 units each value 100 r/r (ppm) 80 60 40 20 0 - 20 - 40 vsmp0603 100r vsmp0603 5k vsmp0603 1k figure 6 - load life test for 10,000 hrs @0.3w, +70c; vs mp 1206, n=40 -500 -400 -300 -200 -100 0 100 200 300 400 500 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 r (ppm) time (hrs) 10r 1k 12k cryogenic test different expansion/contraction rates of composite materials in resistors may induce discont inuities during temperature excursions that are not evid ent at temperature extremes, making an unreliable resistor appear normal. a good resistor must also return to its initial value with no resistance drift. in this demo, a vfr vsmp0805 precision resistor is monitored through the range of +25c, down to -196c and back up to +25c. results confirm t he vsmp0805 exhibits only 5 ppm/c tcr, experiences no di scontinuities, and returns to its exact same starting value, showing absolutely no change in resistance (< 1 pp m measurement accuracy). figure 7 - precision resistor in cryogenic conditions - only 5 ppm/ c (product demo)
vsmp series (0603, 08 05, 1206, 1506, 2010, 2018, 2512) (z-foil) vishay foil resistors www.vishayfoilresistors.com f or any questions, contact: foil@vishaypg.com document number: 63060 4 revision: 29-oct-2012 pulse test test description all parts are baked at +125c for 1 hour and allowed to cool at room temperature for 1 hour, prior to testing. by using an electrolytic 0.01f capacitor charged to 1200 vdc, a single pulse was performed on 30 units of 1206, 10 k ? of surface mount vishay foil resistor and thin film resistor. the units were allowed time to cool down, after which the resistance measurements were taken and displayed in ppm deviation from the initial reading. test results figure 8 - pulse test description 2 figure 9 - pulse test results at 1200 vdc* -20000 0 20000 40000 60000 80000 100000 120000 140000 0 5 10 15 20 25 30 r (ppm) resistor # size: 1206 value: 10k n = 30 thin film bulk metal ? foil note: average of 30 units yielded deviation of 30 723 ppm of the thin film vs C14 ppm for the bulk metal ? foil * note: average of 30 units yielded deviation of 30,723 ppm of the thin film vs. -14 ppm for the bulk metal ? foil electrostatic discharge (esd) esd can be categorized into three types of damages: parametric failure - occurs when the esd event alters one or more device parameters (resistance in the case of resistors), causing it to shift fr om its required tolerance. this failure does not directly pertain to functionality; thus a parametric failure may be present while the device is still functional. catastrophic damage - occurs when the esd event causes the device to immediately stop functioning. this may occur after one or a number of esd events with diverse causes, such as human body discharge or the mere presence of an electrostatic field. latent damage - occurs when the esd event causes moderate damage to the device, which is not noticeable, as the device appears to be functioning correctly. however, the load life of the device has been dramatically reduced, and further degradation caused by operating stresses may cause the device to fail during service. latent damage is the source for greatest concern, since it is very difficult to detect by re-measurement or by visual inspection, because damage may have occurred under the external coating. test description by using an electrolytic 500 pf capacitor charged up to 4500 v, pulses were performed on 10 units of 1206, 10 k ? of three d ifferent surface mount chip resistors technologies, with an initial voltage spike of 2500 v (figure 10). the units were allowed time to cool down, after which the resistance measurements were taken and displayed in ppm deviation from the initial readings. readings were then taken in 500 v increments up to 4500 v. figure 10 - esd test description 2500 v to 4500 v rx 500 pf dmm 1 m table 6 - esd test results ? (average of 10 units) volts ? r (% ) thick film thin film foil 2500 -2.7 97 <0.005 3000 -4.2 366 <0.005 3500 -6.2 open <0.005 4000 -7.4 open <0.005 4500 -8.6 open <0.005
table 7- global part number information (1) new global part number: y162612k7560t9r (preferred part number format) denotes precision value characteristics y r = ? ? k = k ? 0 = standard ? 9 = lead (pb)-free ? 1 to 999 = c ustom product code resistance tolerance packaging 1636 = vsmp 0603 1624 = vsmp0805 1625 = vsmp1206 1626 = vsmp1506 1627 = vsmp2010 1637 = vsmp2018 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 an d 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 vsmp0603 vsmp0805 vsmp1206 vsmp1506 vsmp2010 vsmp2018 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 r eel ? w = waffle pack vsmp series (0603, 0805, 1206, 1506, 2010, 20 18, 2512) (z-foil) vishay foil resistors document number: 63060 for any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com revision: 29-oct-2012 5 note (1) for non-standard requests, please contact application engineering. precision center precision centers are located around t he world to provide local, short run, quick delivery of vishay bulk metal ? foil resistors. unique to vishay foil resistors (vfr) is the ability to provide any value to any tolerance. the precision centers can ship smal l quantities in five days or less. why do we have authorized local manufacturing or precision centers? because we have no standard values and each resistor is trimme d to the precise value ordered. the unique chain of precision centers brings these precise values as close as possible to the circuit designers in t he shortest time possible. for your local precision center please click here . 6261 k75 2 y1 t9 6 r 0
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