Metal Film Resistors MF Series MERITEK RoHS FEATURES Low Noise Low T.C.R. 200ppm, 100ppm, 50ppm, 25ppm, 15ppm, 10ppm, and 5ppm High Precision 1%, 0.5%, 0.25%,0.1% and 0.05% PART NUMBERING SYSTEM MF Meritek Series Power Rating: 1/4 watt Code 12 20 25 50 100 200 Watt. 1/8 1/6 1/4 1/2 1 2 Temp. Coef.: 25ppm/⁰C Code Blank B D F TCR ±50ppm ±5ppm ±15ppm ±25ppm Resistance: 20KΩ Code 2002 1002 502 102 Res. 20KΩ 10KΩ 5KΩ 1KΩ Tolerance: 0.1% Code T A B C Tol. ±0.01% ±0.05% ±0.1% ±0.25% Packaging: Tape & Reel Code TR B Package Tape and Reel Bulk 25 F 2002 B TR 300 3 DIMENSIONS Type Body (mm) Leadwire (mm) (L) (D) (H) (d±0.03) MF12 3.3+0.2 1.8 ±0.3 29±2 0.45±0.03 MF20 3.3+0.2 1.8 ±0.3 29±2 0.45±0.03 MF25S 3.3+0.2 1.8 ±0.3 29±2 0.45±0.03 MF25 6.3±0.5 2.3±0.3 28±2 0.55±0.03 MF50S 6.3±0.5 2.3±0.3 28±2 0.55±0.03 MF50 9.0±0.5 3.2±0.5 26±2 0.65±0.03 MF100S 9.0±0.5 3.2±0.5 26±2 0.65±0.03 MF100 11.5±1.0 4.5±0.5 35±2 0.78±0.03 MF200S 11.5±1.0 4.5±0.5 35±2 0.78±0.03 MF200 15.5±1.0 5.0±0.5 32±2 0.78±0.03 MF300S 15.5±1.0 5.0±0.5 32±2 0.78±0.03 Rev. 7b Metal Film Resistors MF Series MERITEK RoHS SPECIFICATIONS Power rating o @ 70 C Max working voltage Max overload voltage Dielectric withsanding voltage Operation Temp. MF12 MF20 MF25S MF25 MF50S MF50 150V 150V 200V 250V 300V 350V 400V 500V 500V 500V 500V 300V 300V 400V 500V 500V 500V 600V 700V 700V 1000V 1000V 300V 300V 300V 400V 400V 500V 500V 700V 700V 1000V 1000V -55°C to +155°C Value Range. ±1% 0.1Ω~1Ω Value Range. ±1%, ±0.5% 1Ω~1MΩ Value Range. ±0.25%, ±0.1%, ±0.05% MF100S MF100 MF200S MF200 MF300S 10Ω~100KΩ ENVIRONMENTAL CHARACTERISTICS PERFORMANCE TEST TEST METHOD APPRAISE Short Time Overload 2.5 times RCWV for 5 seconds ±(0.25%+0.05Ω) Temperature Coefficient (T.C.R.) Resistance value at room Temperature and room By Type Temperature+100°C Voltage Proof In V-Block for 60 seconds By Type Pulse Overload 4 times RCWV for10000cycles (1sec on, 25secs off) ±(0.75%+0.05Ω) Insulation Resistance In V-Block >10000MΩ Load Life 70°C at RCWV for1000hrs. (1.5hrs on, 0.5hrs off) ±(1.5%+0.05Ω) 40±2°C 90~95%RH at RCWV for1000hrs. (1.5hrs on, Load Life In Humidity ±(1.5%+0.05Ω) 0.5hrs off) Temperature Cycling Solder Ability -40°C/85°C with 1000 cycles. (20min for both low and high Temperature , transfer 260±5°C for 2±0.5 seconds time less 30s) 260±5°C for 10 seconds±1 second or Resistance to Soldering Heat ±(0.75%+0.05Ω) 95% min. coverage ±(0.25%+0.05Ω) 350±10°C for 3.5 seconds± 0.5 second No deterioration of Resistance To Solvent Trichloroethane for 1 min with ultrasonic. Terminal Strength Direct load for 10 sec. In the direction off the terminal coatings and markings Tensile: 2.5kg leads. Reference Standards: IEC 60115-1 Storage Temperature: 25±3°C; Humidity < 80%RH Rev. 7b Metal Film Resistors MF Series MERITEK RoHS POWER GRAPH HOT-SPOT TEMPERATURE Rev. 7b