document number: 63109 for any questions, contact: foil@vishay.com www.vishay.com revision: 30-oct-08 1 VFCD1505 (z-foil technology) vishay foil resistors z-foil surface mount flip chip voltage divider tcr tracking of 0.1 ppm/c , absolute tcr 0.05 ppm/c , with resistance ratio stability of 0.005 % (50 ppm) introduction bulk metal ? z-foil (bmzf) technology out-performs all other resistor technologies available today for applications that require ultra high precision and ultra high stability. the new z-foil technology provides a significant reduction of the resistive element?s sensitivity to changes of temperature due to ambient temperature variations (tcr) and to self heating when power is applied (power coefficient). model VFCD1505 offers low tcr (both absolute and tracking), excellent load life stability, tight tolerance, excellent ratio stability, low thermal emf and low current noise, all in one package. 0.05 ppm/c absolute tcr removes errors due to temperature gradients. the VFCD1505 surface mount divider provides tight tolerance matching and tcr tracking between 2 resistors simultaneously etched on one piece of foil on a common substrate. the electrical specifications of this integrated construction offers improved performances and better real estate utilization over discrete resistors and matched pairs. our application engineering department is available to advise and make recommendations for non-standard technical requirements and special applications, please contact us. features ? temperature coefficient of resistance (tcr): absolute: (table 1) 0.05 ppm/c (typical 0 c to + 60 c) 0.2 ppm/c (typical - 55 c to + 125 c, + 25 c ref.) tracking: (table 1) 0.1 ppm/c typical ? resistance range: 1k to 10k ? vishay foil resistors are not restricted to standard values/ ratios, we can supply specific ?as required? values/ratios at no extra cost or delivery (e.g 2k234/5k456) ? power coefficient tracking: ? r due to self heating? 5 ppm at rated power ? short time overload: 0.005 % ? tolerance: absolute and resistance ratio: to 0.01 % ? load life stability (0.1 w at 70 c, 2000 h) absolute: 0.01 % ratio: 0.005 % ? electrostatic discharge (esd) up to 25 000 v ? power rating at 70 c: entire package: 0.1 w, divided between the two resistors proportionally to their value ? non-inductive, non-capacitive design ? thermal emf: 0.05 v/c typical ? current noise: < - 40 db ? rise time: 1 ns effectively no ringing ? non inductive: < 0.08 h ? voltage coefficient: < 0.1 ppm/v ? non hot spot design ? terminal finishes available: lead (pb)-free tin/lead alloy ? for better performances please contact us applications ? instrumentation amplifiers ? bridge networks ? differential amplifiers ? ratio arms in bridge circuits ? medical and test equipment ? military ? airborne etc. * pb containing terminations are not rohs compliant, exemptions may apply figure 1 - power derating curve figure 2 -schematic bottom view 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 r1 r2 a v aila b le p b -free rohs* compliant r 1 r 2 vin vout - + VFCD1505
VFCD1505 (z-foil technology) vishay foil resistors z-foil surface mount flip chip voltage divider tcr tracking of 0.1 ppm/c , absolute tcr 0.05 ppm/c , with resistance ra tio stability of 0.005 % (50 ppm) www.vishay.com for any questi ons, contact: foil@vishay.com document number: 63109 2 revision: 30-oct-08 note ? additional ratios are available. for the relevant vcodes for ordering, please contac t application engineering using the footer below note 1. r's plus additional 0.01 for measurement error table 1 - resistance values/ratio and tcr characteristics popular values vcodes absolute tcr (- 55 c to + 125 c, + 25 c ref.) tcr tracking tolerance matching typical maximum typical maximum 10k/10k v0001 0.2 ppm/c 1 ppm/c 0.1 ppm/c 0.5 ppm/c 0.01 % 5k/5k v0002 1k/1k v0004 2k/2k v0059 5k/10k v0005 0.2 ppm/c 1 ppm/c 0.4 ppm/c 1.0 ppm/c 0.01 % 2.5k/10k v0060 1k/9k v0056 0.2 ppm/c 1 ppm/c 0.4 ppm/c 1.0 ppm/c 0.02 % 1k/10k v0064 table 2 - typical performance specifications test mil-prf-55342h characteristic e r limits 1) VFCD1505 ratio thermal shock 0.10 % 0.005 % (50 ppm) low temperature operation 0.10 % 0.005 % (50 ppm) short time overload 0.10 % 0.005 % (50 ppm) high temperature exposure 0.10 % 0.01 % (100 ppm) resistance to soldering heat 0.20 % 0.01 % (100 ppm) moisture resistance 0.20 % 0.005 % (50 ppm) load life (ratio stability) - 0.005 % (50 ppm) maximum working voltage for each element 22 v weight 10 mg packaging waffle pack standard, tape and reel available figure 3 - model VFCD1505 dimensions and land pattern in inches (millimeters) l 0.005 (0.13) w 0.005 (0.13) d 0.003 (0.08) l1 0.003 (0.08) w1 0.005 (0.13) thickness maximum z 0.003 (0.08) g 0.003 (0.08) s 0.003 (0.08) x 0.003 (0.08) 0.150 (3.81) 0.050 (1.27) 0.015 (0.38) 0.144 (3.66) 0.043 (1.09) 0.025 (0.64) 0.147 (3.73) 0.111 (2.82) 0.046 (1.17) 0.046 (1.17) g z s s x w w1 l1 d l d d chip (bottom view) recommended land pattern
document number: 63109 for any questions, contact: foil@vishay.com www.vishay.com revision: 30-oct-08 3 VFCD1505 (z-foil technology) z-foil surface mount flip chip voltage divider tcr tracking of 0.1 ppm/c , absolute tcr 0.05 ppm/c , with resistance ratio stability of 0.005 % (50 ppm) vishay foil resistors notes * application engineering release: for non-standard r equests, please contact application engineering ** for examples of vcodes see table 1 figure 4 - trimming to values (conceptual illustration) m u t u al ind u ctance red u ction d u e to opposing c u rrent in adjacent lines 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 5 - typical tcr curve z-foil (for more details see table 1) + 500 + 200 + 100 0 - 100 - 200 - 300 - 500 - 55 - 25 + 25 + 60 + 75 + 100 + 125 ambient temperature (c) 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 table 3 - global part number information new global part number: y1685v0001qq9r (preferred part number format) denotes precision vcode** tolerance match packaging y resistance value code t = 0.01 % q = 0.02 % a = 0.05 % r = tape and reel w = waffle pack product code absolute tolerance aer* 1685 = VFCD1505 t = 0.01 % q = 0.02 % a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % 0 = standard product, tin/lead terminations 9 = standard product, lead (pb)-free terminations other = custom for example: above global order y1685 v0001 q q 9 r: type: VFCD1505 values: 10k/10k absolute tolerance: 0.02 % tolerance match: 0.02 % termination: lead (pb)-free packaging: tape and reel historical part number: VFCD1505 10k/10k tcr0.2 q q s t (will continue to be used) VFCD1505 10k/10k tcr0.2 q q s t model ohmic value tcr characteristic absolute tolerance tolerance match termination packaging VFCD1505 r 1 = 10 k r 2 = 10 k t = 0.01 % q = 0.02 % a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % t = 0.01 % q = 0.02 % a = 0.05 % s = lead (pb)-free b = tin/lead alloy t = tape and reel w = waffle pack 685v 001 0 y1 q9 q r
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay 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.
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