document number: 63046 revision 05-aug-02 www.vishay.com 140 VSR144 vishay foil resistors through hole vishay foil ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +972.3.557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11919 fax: +39.2.300.11999 ?japan +81.42.729.0661 fax: +81.42.729.3400 ?singapore +65.788.6668 fax: +65.788.0988 ?sweden +46.8.594.70590 fax: +46.8.594.70581 ?uk +44 191 514 8237 fax: +44 1953 457 722 ?usa +1 610 407-4800 fax: +1 610 640-9081 bulk metal foil technology industrial grade miniature voltage divider features temperature coefficient of resistance: nominal tcr: 4ppm/ c (0 to 60 c) tcr tracking: 1.5ppm/ c ratio stability: < 0.001% (10ppm) under load-life conditions ratio tolerance: to 0.02% schematic 2 23 r2 1 r1 standard printing and dimensions tolerance: 0.010" 1. lead wires: #22 awg solder coated copper, 0.75" minimum length. 2. each resistor contains 1 chip consisting of two resistive elements. the VSR144 is an industrial version of the 300144. this device has the stability that is inherent in foil but does not offer t he tight match, tcr, or tcr tracking of the 300144. this product is quite satisfactory for most industrial purposes and should be considered when the total performance of the 300144 is not necessary. 123 vishay 0125 VSR144 10k000 0.01% 10k000 1 low resistance value indicator 0.295 (7.493) 0.320 (8.128) match tolerance date code model no. 0.75 1 (19.05) 0.1 (2.54) 0.1 (2.54) specify vishay industrial grade miniature voltage dividers as follows: model resistance absolute ratio match tcr number value* tolerance tolerance tracking r1 = 10k ? 0.05% VSR144 r2 = 10k ? 0.05% 0.02% 1.5ppm/ c *specify the resistance value for each resistor of the set ?even if all values are the same. figure 1 - model VSR144 standard printing and dimensions in inches (millimeters) table 1 - ordering information - VSR144 parts product may not be to scale
www.vishay.com 141 VSR144 vishay foil resistors document number: 63046 revision 05-aug-02 through hole vishay foil ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +972.3.557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11919 fax: +39.2.300.11999 ?japan +81.42.729.0661 fax: +81.42.729.3400 ?singapore +65.788.6668 fax: +65.788.0988 ?sweden +46.8.594.70590 fax: +46.8.594.70581 ?uk +44 191 514 8237 fax: +44 1953 457 722 ?usa +1 610 407-4800 fax: +1 610 640-9081 ( ) ( ) 1. for resistance ratios not shown, contact vishay? applications engineering department. the VSR144 can be made available in any required ratio between the resistance values of 100 ohms and 20kohms, such that r1 can be any value between 100 ohms and 20kohms and r2 can also be any value between 100 ohms and 20kohms. new art work is required. 2. power is proportional to the divider ratio. example: in a VSR144 (1k/10k dual), the power rating would be 18mw on the 1k and 182mw on the 10k, for a total of 200 mw on r1 + r2. r1 r2 p1 = p p2 = p r1 + r2 r1 + r2 3. maximum working voltage is 200 volts. 0.2w @ + 85 c (for the entire resistive element r1 + r2) divided proportionally between the two elements. table 2 - model VSR144 specifications ratio match available to 0.02% tcr tracking < 1.5ppm/ c for like values < 2.0ppm/ c standard shelf life stability (ppm/yr) 25 absolute available to 0.02% vishay model VSR144 3 power rating 2, 3 resistance ratio available 1 ( ? ) 100/12.3k 500/500 500/15k 800/800 1k/1k 1k/2k 1.5k/3k 2k/2k 2k/3k 2k/4k 2k/20k 2.7k/10k 3k/6k 5k/5k 5k/10k 5.5k/7.7k 6k/6k 6k/20k 10k/10k 10k/20k 15k/15k 20k/20k standard resistance tolerance bulk metal foil technology industrial grade miniature voltage divider
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