SMF256KJT TE Connectivity

SMD Moulded Power Resistor Type SM Series Key Features Low Profile Design Available on Tape Very Wide Value Range Ideal for Power Circuitry Available in 4 ratings up to 7 Watts Flameproof Coating UL94V0 TE Connectivity (TE) introduces a surface mount power resistor suited to meet today s circuit design needs. Each size offers low profile case design with flexible tinned copper terminations for reliable solder joints. All styles utilize a fully welded construction technique, unlike other designs that rely solely on tinned termination connections. These features allow the SM Series to withstand the higher temperatures associated with reflow, vapour phase, or infrared (IR) manufacturing processes without degradation. Now also available at 7W power rating. Characteristics Electrical SMW Wire SMF Metal Film Values SM 2: R10 200R 201R 2M Values SM 3: R10 300R 301R 2M Values SM 5: R10 500R 501R 2M Values SM 7: R10 1K0 1K1 2M Value Grid: E24 Resistance Tolerance: 1% or 5% Power Rating 20C SM 2: 2.0 Watts Power Rating 20C SM 3: 3.0 Watts Power Rating 20C SM 5: 5.0 Watts Power Rating 20C SM 7: 7.0 Watts Derating: See Curve Below Max Operating Voltage SM 2: 300 Volts Max Operating Voltage SM 3: 500 Volts Max Operating Voltage SM 5: 500 Volts Max Operating Voltage SM 7: 750 Volts Operating Temperature Range -55 ~ 200C Dimensions in Dimensions Shown for 1773242 Rev. F 08/2020 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change SMD Moulded Power Resistor Environmental Characteristics Test Condition SM (Wire) SM (Metal Film) Temperature Coefficient of -55C +200C 200ppm /C 100ppm /C Resistance: Step Temp.C Time m 1 -553 30 Resistance change Rate within Temperature Cycle 2 Room Temp. 2~3 1% 3 2003 30 4 Room Temp 2~3 Short Time Overload: 5 times of rated wattage for 5 sec. 1% 0.5% Rated Load: Rated voltage for 30 minutes 3% 1% Insulation 500VDC , M , M Resistance: Load Life: 2% 1% 70C 1.5 hrs on 0.5 hrs off for 1000 hrs (7W 5%) (7W 5%) Humidity Load Life: 40C 2C 90-95% RH 500 hrs 1.5 hrs 2% (7W 1% (7W on 0.5 hrs off 5%) 5%) Voltage Withstand: 500VAC for 60 seconds No Physical No Physical damage damage Solderability: 235C 5C for 2 seconds 95% coverage Resistance to Resistance value change within 270C 5C for 10 1seconds Soldering Heat: 1% Dimensions A0.3 B0.3 C0.3 D0.3 E Max. F0.3 Reel Qty SM 2W 4.0 6.7 1.4 3.55 7.9 1.5 2000 SM 3W 5.5 10.5 1.7 5.0 12.0 2.3 1000 SM 5W 7.3 13.5 1.7 6.8 17.0 2.5 1000 9.5 23.0 9.6 24.5 4.5 SM 7W 5.0 300 Dimensions in Dimensions Shown for 1773242 Rev. F 08/2020 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change