PRODUCT BULLETIN MOF-MOS SERIES 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 METAL OXIDE FILM RESISTORS 1/2 WATT THRU 10 WATT EXCELLENT STABILITY SOLVENT RESISTANT COATINGS LOW NOISE SMALL SIZE FLAME RETARDENT TOLERANCE 1% & 5% TEMPERATURE COEFFICIENT 200 & 350 PPM/C H Dimensions TYPE MOF 1/2 W 1W 2W 3W 4W 5W 7W D .023 .58 .032 0.8 .138 3.5 .177 4.5 .217 5.5 .335 8.5 .354 9.0 .472 12 .630 16 .984 25 1.260 32 1.614 41 2.087 53 D d 3.5 0.5 4.5 0.5 5.5 0.5 8.5 0.5 8.5 0.5 8.5 0.5 8.5 0.5 0.58 0.02 0.8 0.03 0.8 0.03 0.8 0.03 0.8 0.03 0.8 0.03 0.8 0.03 H(MIN) 25 27 27 27 27 27 27 d Specifications Dimensional Correlation mm L 91 12 1 16 1 25 1 32 1 41 1 53 1 Operating Temperature Range is -55C to +155C L in. MOS 1W 2W 3W 5W 6W 7W 10 W DIMENSION (mm) TYPE MOF 1/2 W 1W 2W 3W 4W 5W 7W WORKING VOLTAGE OVERLOAD VOLTAGE Max. 300V 350V 350V 500V 500V 750V 750V Max. 600V 700V 700V 1000V 1000V 1000V 1000V MOS 1W 2W 3W 5W 6W 7W 10 W RESISTANCE RANGE 5% 0.1 1 0.1 1 0.1 1 0.5 1 10 1 10 150 10 150 NOTE: 1% TOLERANCE IS AVAILABLE IN MOF 1, 2 & 3 WATTS FROM 1 OHM THRU 1 MEG. OHM. 1/2 - 3 W PARTS ARE COLOR CODED. 4 - 7 W ARE ALPHA NUMERIC TCR 200 PPM is also available. Consult factory. Temperature Coefficients T200 = 200 PPM/C T350 = 350 PPM/C How to Order Sample Part Number MOS 1W T350 100K 5% Resistance Tolerance Resistance Value Temperature Coefficient Wattage Type DEDICATION TO EXCELLENCE Subject to change without notice Continued on reverse side REV A 1/25/00 Characteristics Short Time Overload Resistance to Soldering Heat Temp. Cycling Load Life Dielectric Withstanding Voltage Moisture Resistance Insulation Resistance Flammability DERATING CURVE LOAD % 100 80 60 40 20 0 Rmax (1% + 0.05) Rmax (1% + 0.05) METHOD 210 METHOD 107 Rmax (1% + 0.05) METHOD 108 Rmax 5% METHOD 301 Rmax (0.5% + 0.05) METHOD 106 Rmax 5% ____________ 4 > 10 In accordance with UL 492.2.13 without producing a fire hazard. 0 5070 100 150 155200 240 AMBIENT TEMP (C) Subject to change without notice SURFACE TEMP RISE 250 200 MOF5 MOF4 MOF3 150 MOF2 100 MOF1 MOF1/2 50 0 -50 TEST METHOD MIL-STD-202 ____________ PERFORMANCE SURFACE TEMP (C) REQUIREMENTS 0 25 50 75 100 LOAD % REV A 1/25/00