document number: 61024 revision 07-aug-01 www.vishay.com 76 CTN vishay electro-films chip resistors vishay electro-films ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +9 72.3.557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11911 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: (401) 738-9150 fax: (401) 738 -4389 tightest standard tolerance available 0.5% 0.1% 10 ? 100 ? 200 ? 1m ? nichrome thin film, center-tapped resistors features center tap feature chip size: 0.030 inches square resistance range total: 10 ? to 1m ? ratio tolerances to: 0.1% resistor material: nichrome oxidized silicon substrate for good power dissipation the CTN series is a center tapped nichrome resistor chip providing excellent stability at 250mw power levels. the CTN offers the designer flexibility in use as either a single value resistor or as two resistors with a center tap feature. the CTNs six bonding pads allows the user increased layout flexibility. the CTNs are manufactured using vishay electro-films (efi) sophisticated thin film equipment and manufacturing technology. the CTNs are 100% electrically tested and visually inspected to mil-std-883. parameter tcr tracking between halves (r a ,r b ) 2ppm/ c* center tap ratio, r a /r b tolerance 1 1% standard noise, mil-std-202, method 308 100 ? - 250k ? - 35db typical stability, 1000 hours, + 125 c, 125mw 0.1% ? r/r operating temperature range - 55 c to + 125 dielectric voltage breakdown 200v insulation resistance 10 12 minimum operating voltage 100v maximum dc power rating at + 70 c (derated to zero at + 175 c) 250mw standard electrical specifications applications the CTN center-tapped resistor chips are used mainly in feedback circuits of amplifiers where ratio matching, high power and tracking between two resistors is critical. recommended for hermetic environment where die is not exposed to moisture. for low values, the resistance of the six bonding-pad configurations can vary, depending on the method of measurement used. vishay efi measures low-value resistors by the four wire kelvin technique. 20ppm/ c for r < 20 process code class h* class k* 202 262 200 260 201 261 *mil-prf-38534 product may not be to scale temperature coefficient of resistance, values and tolerances 100ppm/ c 50ppm/ c 25ppm/ c
www.vishay.com 77 CTN vishay electro-films document number: 61024 revision 07-aug-01 chip resistors vishay electro-films ?france +33.4.93.37.28.24 fax: +33.4.93.37.27.31 ?germany +49.9287.710 fax: +49 9287.70435 ?israel +9 72.3.557.0945 fax: +972.3.558.9121 ?italy + 39.2.300.11911 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: (401) 738-9150 fax: (401) 738 -4389 parameter chip size 0.030 x 0.030 0.002 (0.762 x 0.762 0.05mm) chip thickness 0.010 0.002 (0.254 0.05mm) chip substrate material oxidized silicon, 10k? minimum sio 2 resistor material nichrome bonding pad size 0.005 x 0.005 (0.127 x 0.127mm) minimum number of pads 6 pad material 15k? minimum gold standard backing none, lapped semiconductor silicon mechanical specifications in inches configurations in inches options: alphanumeric part parking, up to six characters gold backing for eutectic die attach center-tap ratio tolerances to 0.01% contact applications engineer nichrome thin film, center-tapped resistors schematic r t = r a + r b standard configuration six locations. all pads 0.005 x 0.005 inch 0.030 0.030 r a r b ordering information example: 100% visualled, 10k ? , 1%, 100ppm/ c tcr, gold pads, class h p/n: w CTN 201 1000 1 f inspection product process resistance multiplier tolerance /packaging family code value code code w = 100% visually see process code use first 4 c = 0.001 b =0.1% inspected parts per table significant digits b = 0.01 c =0.2% mil-std-883 loaded of resistance (r t ) a = 0.1 d = 0.5% in matrix tray 0 = 1 f = 1.0% x = sample, visually 1 = 10 g = 2.0% inspected loaded in matrix 2 = 100 h = 2.5% trays (4% aql) 3 = 1000 j = 5.0% 4 = 10000 k = 10% m = 20% l = 25% r a r b typical range 10 ? - 49 ? typical range 50 ? - 199 ? typical range 200 ? - 1m ? 0.026
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