PRODUCT BULLETIN MF-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 [email protected] Website http://www.willow.co.uk GENERAL PURPOSE METAL FILM RESISTORS Small Size Low Cost 0.5%, 1.0%, 5.0% Resistance Tolerance 100, 50 & 25 PPM Temperature Coefficient Conformal Coating Color Band Marking Tape & Reel Packaging Lead L. Lead Dia. Max L. Max. Dia. Dimensions Type In Inches Max. L. Max. Dia. Lead Dia. Lead L. MF-12 .146 ±.016 .059 ±.008 .017 ±.002 .984 MF-25 .256 ±.020 .091 ±.008 .0236 ±.0004* .984 MF-50 .354 ±.039 .138 ±.020 .0236 ±.0004* .984 MF-100 .472 ±.039 .177 ±.020 .031 ±.002 .984 MF-200 .630 ±.039 .217 ±.020 .031 ±.002 .984 * MF-25 & MF-50 ARE ALSO AVAILABLE WITH .022 IN. DIAMETER LEADS Dimensional Correlation in. mm .0004 .017 .022 .01 .45 .56 .0236 .025 .031 .059 .60 .63 .80 1.50 .091 .138 .146 .177 .217 .256 .354 .472 .630 .984 2.30 3.50 3.70 4.50 5.50 6.50 9.00 12.0 16.0 25.0 Specifications Type Power Rating at 70°C MF-12 MF-25 Voltage Voltage Max. Working Max. Overload T100 & TC50 Range (Ohms) TC25 Range (Ohms) 1/8 W 51.1 511 100 100 200 V 400 V 1/4 W 5.11 2.4 5.11 511 250 V 500 V MF-50 1/2 W 5.11 2.4 5.11 1 350 V 700 V MF-100 1W 5.11 2.4 5.11 1 500 V 1000 V MF-200 2W 5.11 5.11 5.11 1 500 V 1000 V LEAD TAPE PACKAGING PER EIA RS-296 Available Resistance Values 0.5% = E192 1% = E96 5% = E24 & E48 How to Order Sample Part Number MF-25 T100 100K 1% Resistance Tolerance Resistance Value Temperature Coefficient Type DEDICATION TO EXCELLENCE Subject to change without notice Continued on reverse side REV C 12/27/99 Characteristic Specification Test Method (All resistance measurements should be performed after stabilization or conditioning periods.) MIL-STD-202 Method 303 MIL-STD-202 Method 304 Within specified tolerance. As buyer requested ±25PPM/°C ±100PPM/°C ±50PPM/°C ±200PPM/°C No flashover or damage DC RESISTANCE TEMPERATURE COEFFICIENT DIELECTRIC STRENGTH INSULATION RESISTANCE At least 1000MΩ CURRENT NOISE TEST 5.11Ω to 9.99Ω less than 0.05µV/V 10Ω to 9.99KΩ less then 0.1µV/V 10KΩ to 1MΩ less then 0.2µV/V ∆R within ±(0.25% + 0.05Ω) VIBRATION TERMINAL STRENGTH RESISTANCE TO SOLDERING HEAT No broken or loosened terminals. ∆R within ±(0.25% + 0.05Ω) SOLDERABILITY At least 95% coverage THERMAL SHOCK ∆R within ±(0.5% + 0.05Ω) SHORT TIME OVERLOAD ∆R within ±(0.05% + 0.05Ω) HUMIDITY ∆R within ±(1% + 0.05Ω) NO mechanical damage LOW TEMPERATURE OPERATION ∆R within ±(0.5% + 0.05Ω) LOAD LIFE ∆R within ±(1% + 0.05Ω) RESISTANCE TO SOLVENT Color bands legible. No mechanical damage. MIL-STD-202 Method 301 1/8W 300V 1 minute 1/4W 500V 1 minute 1/2W 700V 1 minute 1, 2W 750V 1 minute MIL-STD-202 Method 302 100V 1 minute MIL-STD-202 Method 308 MIL-STD-202 Method 201 10~ Hz X.Y.Z. 3 directions 2 hours each. MIL-STD-202 Method 211 MIL-STD-202 Method 210 350°C, 3 ±0.05 seconds MIL-STD-202 Method 208 230°C, 5 seconds MIL-STD-202 Method 107 -55°C, +155°C 5 cycles MIL-R-10509 Para, 4.6.6 2.5 times rated working voltage, 5 seconds MIL-STD-202 Method 103 40°C, RH 95% 500 MIL-R-10509 Para 4.6.5 Rated working voltage, @ -65°C 45 minutes. MIL-STD-202 Method 108 Rated working Voltage 1 ½ hours on. ½ hour off for total 1000 hours MIL-STD-202 Method 215 CURRENT NOISE uV/V dB 1.0 0 0.32 -10 0.10 -20 0.032 -30 0.010 -40 0.003 -50 10 100 1K 10K 100K 1M Nominal Resistance (Ω) REV D 1/20/99