Resistors Metal Film Resistors Metal Film Resistors Welwyn Components MFR MFRSeries Series Professional grade approved to BSCECC Professional grade approved to 40101-803 and 019 Tolerances down to 0.5% BSCECC 40101-803 and 019 Temperature coefficient down to 50ppm/C Tolerances down to 0.5% Temperature coefficient down to 50ppm/C All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) Electrical Data Power rating at 70C Resistance range Limiting element voltage TCR Resistance tolerance MFR3 0.4 10R - 1M 200 50 1 watts ohms volts ppm/C % MFR4 0.5 1R0 - 1M 350 50 0.5, 1 CECC 40101 - 019 Requirements Power rating at 70C watts Resistance range. ohms Limiting element voltage volts TCR ppm/C Resistance tolerance MFR5 0.75 1R0 - 1M 350 10:150 >10:100 0.5, 1 FZ FX 0.25 0.25 1 to 1M 1 to 1M 250 250 100 250 5.1 to 9.1 : 200 5.1 to 9.1 : 500 1 1 % CECC 40101 - 803 Requirements Power rating at 70C watts Resistance range. ohms Limiting element voltage volts TCR ppm/C Resistance tolerance % BC 0.125 10 to 1M 200 50 0.5, 1 BK 0.125 10 to 1M 200 100 0.5, 1 EZ 0.5 10 to 1M0 350 100 EX 0.5 10 to 1M 350 250 1 1 CC 0.25 10 to 1M 250 50 0.5, 1 CK 0.25 10 to 1M 250 100 0.5, 1 These tables indicate the CECC specification requirements, and these are met or exceeded by the corresponding MFR series products. . E24, E96 preferred Standard values Thermal impedance Ambient temperature range Product grades available C/watt C 150 140 -55 to 155 commercial, professional commercial 112 professional Physical Data Dimensions (mm) & Weight (g) Type MFR3 MFR4 MFR5 L max D max F min d nom PCB mount centres Min bend radius Wt. nom Commercial 3.7 2.0 22.4 0.45 7.6 0.5 0.1 Professional 6.2 2.5 21.0 0.6 10.2 0.6 0.3 Commercial 6.8 3.0 21.0 0.55 10.2 0.6 0.3 Professional 9.0 3.6 19.6 0.8 12.7 1.2 0.5 General GeneralNote Note TT Electronics reserves the right tothe make changes in product noticewithout or liability. Welwyn Components reserves right to make changesspecification in product without specification notice or liability. Allinformation informationisissubject subject own accurateatattime timeofofgoing going print. All to to TTWelwyn's Electronics' owndata dataand andisis considered considered accurate to to print. d D L f BI Technologies IRC Welwyn (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK (c) TT Electronics Telephone: +44 (0) plc 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com A subsidiary of www.ttelectronics.com/resistors TT electronics plc 11. 09 06.18 135 MetalFilm Film Resistors Metal Resistors Welwyn Components MFR Series MFR Series Performance Data - Type MFR 3 CECC 40101-019 * Requirements Load at commercial rating : 1000 hours at 70C Load at CECC rating : 1000 hours at 70C Shelf life : 12 months at room temperature Derating Short term overload Climatic Climatic category Long term damp heat Temperature rapid change Resistance to solder heat Vibration and bump Noise. (in a decade of frequency) Insulation resistance Voltage proof Pulse handling R % R % R % R % R % R % R % R % R % V/V ohms volts 2 Not Specified zero at 155C 0.5 2 55/125/56 2 0.5 0.5 0.5 Not specified >1G 350 min Actual Performance Maximum Typical 0.8 See Graph 1 0.5 See Graph 1 0.1 0.07 0.25 0.5 0.03 0.2 0.5 0.25 0.25 0.1 0.1 >1G 400 min Data available upon request 0.3 0.05 0.02 0.01 0.07 >1G 400 min * CECC requirements are included for reference only; CECC release is not available on MFR3 Graph 1 - Load for 1000 hours at 70C: maximum changes Performance Data - Type MFR 4 CECC 40101-019 Requirements Load at commercial rating : 1000 hours at 70C Load at CECC rating : 1000 hours at 70C Shelf life : 12 months at room temperature Derating Short term overload Climatic Climatic category Long term damp heat Temperature rapid change Resistance to solder heat Vibration and bump Noise. (in a decade of frequency) Insulation resistance Voltage proof Pulse handling CECC 40101-803 Requirements Actual Performance Maximum Typical R % 0.8 See Graph 2 R % 2 1 0.5 See Graph 2 R % Not specified Not Specified 0.1 0.07 zero at 155C 0.5 2 55/125/56 2 0.5 0.5 0.5 Not Specified >1G 500 min zero at 155C 0.25 0.25 1 0.5 55/125/56 1 0.5 0.25 0.25 0.25 0.25 0.25 0.1 Not Specified 0.1 >1G >1G 400 min 500 min Data available upon request R % R % R % R % R % R % V/V ohms volts 0.01 0.2 0.3 0.04 0.07 0.01 0.1 >1G 500 min Graph 2 - Load for 1000 hours at 70C: maximum changes General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. (c) 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 136 (c) TT Electronics plc www.ttelectronics.com/resistors 06.18 Metal Resistors MetalFilm Film Resistors Welwyn Components MFR Series MFR Series Performance Data - Type MFR 5 CECC 40101-019 Requirements Load at commercial rating : CECC 40101-803 Requirements Actual Performance Maximum Typical R % 1000 hours at 70C Load at CECC rating : 1000 hours at 70C Shelf life : 12 months at room temperature 0.9 See Graph 3 R % 2 1 0.5 See Graph 3 R % Not specified Not Specified 0.1 0.07 zero at 155C zero at 155C 0.5 0.25 0.25 0.01 0.5 0.2 Derating Short term overload R % Climatic R % Climatic category 2 1 55/125/56 55/125/56 Long term damp heat R % 2 1 0.5 0.3 Temperature rapid change R % 0.5 0.25 0.25 0.04 Resistance to solder heat R % 0.5 0.25 0.25 0.07 Vibration and bump R % 0.5 0.25 0.1 0.01 Noise. (in a decade of frequency) V/V Not Specified Not Specified 0.1 0.07 Insulation resistance ohms >1G >1G >1G >1G volts 700 min 500 min 700 min 700 min Voltage proof Pulse handling Data available upon request Graph 3 - Load for 1000 hours at 70C: maximum changes Packaging Construction All MFR resistors are supplied tape packed ready for loading on to automatic sequencing and insertion machines. Component wires will not protrude beyond the outside edge of the tapes. The resistance element is a precisely controlled thin film of metal alloy sputtered on to a high purity ceramic core, protected by a moisture-resistant, high dielectric strength coating applied so that terminations remain completely clear. Alternative packaging available by request. 5 f1 52 Material Hot tin dipped copper wire Strength The terminations meet the requirements of IEC 68.2.21 Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 f2 6 Terminations 6 f 1 - f 2 1.4 mm Lead Formed resistors can also be supplied. Standard options of Lancet, Radial and Goalpost forming are available. Marking 0.5% and 1% tolerance resistors are colour coded with 5 bands. IEC 62 colours are used. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. General Note BI Technologies IRC Welwyn TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 (c) TT Electronics plc 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com www.ttelectronics.com/resistors 06.18 137 Metal Film Resistors MFR Series Ordering Procedure Example: MFR4-4K7FI (Professional grade MFR4 at 4.7 kilohms 1%, Pb-free) M F R 4 - 1 4 K 2 7 F I 3 4 1 2 3 4 Type Value Tolerance Grade, Finish & Packing MFR3 E24 = 3/4 characters MFR4 E96 = 4/5 characters MFR5 R = ohms K = kilohms M = megohms D = 0.5% F = 1% C I MFR3, 4 Commercial Pb-free (RoHS) MFR4, 5 Professional All above in Standard Packing MFR3, 4 5000/box Ammo MFR5 2500/box CECC release is available only for professional grade Pb-free parts (code I). For CECC released product state on order the CECC number and style. Example: MFR4-4K7FI CECC40101-019 FZ Commercial Grade Professional Grade. CECC release is available within range indicated in Electrical Data. General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. (c) TT Electronics plc BI Technologies IRC Welwyn www.ttelectronics.com/resistors 11.09 06.18