Flameproof Power Welwyn Components Metal Film Resistors Flameproof Power Resistors MFP Series Welwyn Components Metal Film Resistors Flameproof Power Smallest size for power rating Metal Film Resistors Resistance rangeMFP Serie 0.1s ohms to 1M ohms Smallest size for power rating Flameproof protection MFP Series Resistance range 0.1 ohms to 1M ohms Small est size for power rating Flameproof protection Resistance range 0.1 ohms to 1M ohms Flameproof protection Surface mount ZI-form option AllAll partsparts araree Pb-Pb-frfreeee andand ccomplyomply withwith EUEU DirDirectivectivee 2011/65/EU2011/65/EU amendedamended bbyy (EU)(EU) 2015/8632015/863 (R(RoHS3)oHS3) Electrical Data Electrical Data MFP1 MFP2 Power rating at 70C watts <1 : 0.7 >=1 : 1.0 2 MFP1 MFP2 Resistance range ohms 0R1 1M 1R0 1M Power rating at 70C watts <1 : 0.7 >=1 : 1.0 2 Limiting element voltage volts 350 TCR ppm/C < 1 : 300 1 - 9.1 : 200 10: 100 100 Resistance range ohms 0R1 1M 1R0 1M Resistance tolerance % 1, 2, 5 Limiting element voltage volts 350 Standard values E24 preferred TCR ppm/C < 1 : 300 1 - 9.1 : 200 10: 100 100 Thermal impedance C/watt 120 82 Ambient temperature range C -55 to 155 Resistance tolerance % 1, 2, 5 Standard values E24 preferred Thermal impedance C/watt 120 82 Physical Data Ambient temperature range C -55 to 155 Dimensions (mm) & Weight (g) PCB Min. mounting bend Type L Max D Max f min d nom centres radius Wt.nom d D MFP1 6.2 2.5 21.0 0.6 10.2 0.6 0.3 L f Physical Data MFP2 10.0 4.0 27.0 0.8 18.4 1.2 0.55 Dimensions (mm) & Weight (g) Construction Marking PCB Min. The resistance element is a precisely controlled thin film of Resistors are colour coded with 4 or 5 bands depending on metal alloy on a high purity ceramic core, protected by a value and tolerance. IEC 62 colours are used. mounting bend cement coating applied so that terminations remain Type L Max D Max f min d nom centres radius Wt.nom completely clear. This permits a well defined body length Solvent Resistance d D (clean lead to clean lead dimension L). The body protection and marking are resistant to all normal MFP1 6.2 2.5 21.0 0.6 10.2 0.6 0.3 L f industrial cleaning solvents suitable for printed circuits. MFP2 10.0 4.0 27.0 0.8 18.4 1.2 0.55 Terminations Material Solder-coated copper wire. Flammability The resistor coating will not burn or emit incandescent Strength The terminations meet the requirements of Construction Marking particles under any condition of applied temperature or IEC 68.2.21 The resistance element is a precisely controlled thin film of Resistorspower overload. are colour coded with 4 or 5 bands depending on Solderability The terminations meet the requirements of metal alloy on a high purity ceramic core, protected by a value and tolerance. IEC 62 colours are used. IEC 115-1, Clause 4.17.3.2 cement coating applied so that terminations remain completely clear. This permits a well defined body length Solvent Resistance General Note General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. (clean lead to clean lead dimension L). The body protectionBI T andechnologies IR marking are rC Wesistantelwyn to all normal TT Electronics reservAll information is subjectes the right to mak to Welwyne changes in product specifics own data and is consideation without notice or liability.red accurate at time of going to print. A subsidiary of TT electronics plc All information is subject to TT Electronics own data and is considered accurate at time of going to print. industrial cleaning solvents suitable for printed circuits. www.ttelectronics.com/resistors Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue D 03.06 Terminations TT Electronics plc 12.19 143 Material Solder-coated copper wire. Flammability The resistor coating will not burn or emit incandescent Strength The terminations meet the requirements of particles under any condition of applied temperature or IEC 68.2.21 power overload. Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyns own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info welwyn-tt.com Website: www.welwyn-tt.com Issue D 03.06 143FlameprFlameproof Poof Poweower Metal Film Resistr ors Metal Film Resistors Flameproof Power Welwyn Components MFP Series MFP Series Metal Film Resistors Welwyn Components MFP Series Performance Data Performance Data Maximum Load at rated power : 1000 hours at 70C R % 5 Maximum Shelf life : 12 months at room temperature R % 2 Load at rated power : 1000 hours at 70C R % 5 Derating from rated power at 70C R % zero at 155C Shelf life : 12 months at room temperature R % 2 Climatic R % 3 Derating from rated power at 70C R % zero at 155C Climatic category 50/155/56 Climatic R % 3 Temperature rapid change R % 0.5 Climatic category 50/155/56 Resistance to solder heat R % 0.5 Temperature rapid change R % 0.5 Voltage proof volts 500 min Resistance to solder heat R % 0.5 Voltage proof volts 500 min Packaging Application Notes MFP resistors are normally supplied tape packed ready for 1. If the resistors are to dissipate full rated power, it is Packaging loading onto automatic sequencing and insertion machines. Application Notes MFP resistors are normally supplied tape packed ready for recommended that the terminations should not be 1. If the resistors are to dissipate full rated power, it is soldered closer than 4mm from the body. loading onto automatic sequencing and insertion machines. The standard taping method and critical dimensions are recommended that the terminations should not be shown in Figure 1. soldered closer than 4mm from the body. 2. Due to operating temperature limitations imposed by some The standard taping method and critical dimensions are pcb materials, derating may be necessary. An estimate of shown in Figure 1. Component wires will not protrude beyond the outside edge 2. Due to operating temperature limitations imposed by some the temperature rise to be expected can be calculated of the tapes. pcb materials, derating may be necessary. An estimate of using the thermal impedance figures given under Electrical Component wires will not protrude beyond the outside edge the temperature rise to be expected can be calculated Data. of the tapes. Alternative packaging available by request. using the thermal impedance figures given under Electrical Data. 3. These products are also available in a range of lead forming Alternative packaging available by request. MFP2 resistors can also be supplied loose packed with radial, goalpost or lancet pre-formed leads - see options. In particular, MFP2 is available in ZI-form SMD