Metal MetalFilm FilmResistors Resistors Welwyn Components MFR Series Series *MFR Professional grade approved to grade and approved s Professional BSCECC 40101-803 019 to 40101-803 019 * BSCECC Tolerances down toand 0.5% *s Tolerances Temperature coefficient down to 0.5%down to 50ppm/C s Temperature coefficient down to 50ppm/C 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 MFR5 0.75 1R0 - 1M 350 10:150 >10:1001 0.5, 1 Note 1 - Tighter TCRs are available on professional grade, consult factory for details. CECC 40101 - 019 Requirements Power rating at 70C watts Resistance range. ohms Limiting element voltage volts TCR ppm/C Resistance tolerance 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 d D L f General General Note Note TT electronics reserves reserves the rightthe to make changes in product without notice or notice liability.or liability. Welwyn Components right to make changes in specification product specification without All information information isis subject subject to to TT Welwyn's ownown datadata and and is considered accurate at time of going to print. All electronics' is considered accurate at time of going to print. A subsidiary of www.bitechnologies.com www.irctt.com www.welwyn-tt.com TT electronics plc (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com Telephone: +44 (0) 1670 11. 09 09. 11 135 MetalFilm Film Resistors Metal Resistors Welwyn Components MFR 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 R % Actual Performance Maximum Typical 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 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 www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 09. 11 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 R % 1000 hours at 70C Load at CECC rating : 1000 hours at 70C Shelf life : 12 months at room temperature Actual Performance Maximum Typical 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 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 09. 11 137 Metal Film Resistors MFR Series 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 www.bitechnologies.com www.irctt.com www.welwyn-tt.com 11.09 09. 11