WW10 WILLOW | Alldatasheet
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FLAMEPROOF WIREWOUND RESISTORS L D d Temperature TC50 = ±50PPM/°C, 1 ohm - 9.9 ohm. TC20 = ±20PPM/°C, 10 ohm and above. TC90 = ±90PPM/°C, below 1 ohm. Resistance Tolerance TC20 ±1% Resistance Value Temperature Coefficient WW1 Sample Part Number Type How to Order 7.5K S Options Wattage Resistance Range Voltage UVStyle PRP WW1/2 WW2 WW3 WW4 WW5 .75 1.0 1.0 1.5 2.0 3.0 2.6 3.6 4.0 5.0 5.0 6.5 0.1 32 130 210 360 WW1 Style PRP L .266 ± .015 DIMENSIONS Inches D Lead Dia. (d) .400 ± .030 .460 ± .030 .490 ± .030 .550 ± .030 .910 ± .030 .095 ± .015 .100 ± .030 .175 ± .030 .220 ± .030 .295 ± .030 .210 ± .030 .025 * .025 * .032 .032 .032 .032 1.375" Min. S = Standard N = Non-Inductive Subject to change without notice Continued on reverse side
1 TO 10 WATT
PACKAGED TAPE & REEL OR BULK AVAILABLE IN NON-INDUCTIVE STYLE MEETS REQUIREMENTS FOR MIL-R-26 Dimensions Specifications HIGH PURITY CERAMIC CORE STAINLESS STEEL END CAPS TINNED COPPER-CLAD STEEL LEADS WELDED CONSTRUCTION 0.1% THRU 10% TOLERANCE in. mm .025 .032 .060 .095 .100 .175 .210 .220 .266 .295 .400 .460 .490 0.64 0.81 1.52 2.41 2.54 4.45 5.33 5.59 6.76 7.49 10.2 11.7 12.4 .550 14.0 .020 0.5 .015 0.38 .030 0.76 .910 23.1 Dimensional Correlation WW7 WW10 7.0 8.0 10.0 11.0 490 632 UV 147 250 410 530 700 to 5.23K 0.1 to 5.0K .02 to 7.2K .01 to 9.5K 0.1 to 14.0K .01 to 42.0K 0.1 to 63.0K 0.1 to 92.0K 1.250 ± .060 1.750 ± .060 .295 ± .030 .295 ± .030 .032 .032 WW1/2 WW2 WW3 WW4 WW5 WW1 WW7 WW10 * ALSO AVAILABLE IN .020 1.25 31.8 1.75 44.5 WILLOW TECHNOLOGIES LTD. SHAWLANDS COURT, NEWCHAPEL ROAD LINGFIELD, SURREY, RH7 6BL, ENGLAND Tel. + 44 (0) 1342 835234 Fax. + 44 (0) 1342 834306 E-mail rob@willow.co.uk Website http://www.willow.co.uk
LOAD % AMBIENT TEMP (°C) 100 25 50 75 100 125 150 175 200 225 250 275 300 325 350 CHAR. U CHAR. V Subject to change without notice ENVIRONMENTAL SPECIFICATIONS CHARACTERISTIC LOAD LIFE MOISTURE RESISTANCE THERMAL SHOCK SHORT TIME OVERLOAD DIELECTRIC STRENGTH LOW TEMP. STORAGE HIGH TEMP. EXPOSURE TERMINAL STRENGTH SHOCK VIBRATION ± .5% + .05 Ω U V ± .2% + .05 Ω ± .1% + .05 Ω ± .2% + .05 Ω ± .2% + .05 Ω ± .2% + .05 Ω ± .1% + .05 Ω ± .1% + .05 Ω ± .1% + .05 Ω ± .5% + .05 Ω ± .5% + .05 Ω ± .1% + .05 Ω ± .1% + .05 Ω ± .1% + .05 Ω ± .2% + .05 Ω ± .5% + .05 Ω ± .1% + .05 Ω ± .2% + .05 Ω ± .2% + .05 Ω ± 3.0% + .05 Ω WW Series resistors have an operating temperature of -55°C to +350°C. They must be derated for use at high ambient temperatures as shown above. Resistors with characteristic V are available in 3%, 5% and 10% only.