Metal Film Resistors Welwyn Components MFR Series * * * Approved to BSCECC 40101-803 and 019 Tolerances down to 0.5% Temperature coefficient down to 50ppm/C Electrical Data Commercial Power rating at 70C Resistance range Limiting element voltage TCR MFR3 0.4 1R0 - 1M 200 <10 and >150K: 100* 10 to 150K:50 1,2 watts ohms volts ppm/C Resistance tolerance % MFR4 0.5 1R0 - 10M 350 50 MFR5 0.75 1R0 - 1M 350 10:150 >10:100* 0.5, 1,2 0.5, 1,2 * Note:- Tighter TCR'S are available, consult factory for details. Approved CECC 40101 - 019 Style Power rating at 70C watts Resistance range. ohms Limiting element voltage volts TCR ppm/C Resistance tolerance % GZ GX FZ FX 0.125 0.125 0.25 0.25 1 to 1M 1 to 1M 1 to 1M 1 to 1M 175 175 250 250 5.1 to 9.1 : 200 5.1 to 9.1 : 500 100 250 10 : 100 10 : 250 5.1 to 9.1 : 200 5.1 to 9.1 : 500 1,2 1,2 1,2 1,2 Approved CECC 40101 - 803 Style Power rating at 70C watts Resistance range. ohms Limiting element voltage volts TCR ppm/C Resistance tolerance % Standard values Thermal impedance Ambient temperature range BC 0.125 10 to 1M 200 50 0.5, 1, 2 C/watt C BK 0.125 10 to 1M 200 100 0.5, 1, 2 E24, E96 preferred 140 -55 to 155 150 EZ 0.5 10 to 1M0 350 100 EX 0.5 10 to 1M 350 250 1,2 1,2 CC 0.25 10 to 1M 250 50 0.5, 1, 2 CK 0.25 10 to 1M 250 100 0.5, 1, 2 112 Physical Data Dimensions (mm) & Weight (g) L Max D Max f min d nom PCB mounting centres MFR3 3.5 1.8 22.4 0.5 7.6 0.5 0.1 MFR4 6.2 2.5 21.0 0.6 10.2 0.6 0.3 MFR5 9.0 3.6 19.6 0.8 12.7 1.2 0.5 Type Min Bend Radius Wt. nom d D L f General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn's own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc (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 Issue B * 03.02 135 Metal Film Resistors Welwyn Components 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 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 (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 Issue B * 03.02 Metal Film Resistors Welwyn Components 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 Derating zero at 155C zero at 155C Short term overload R % 0.5 0.25 0.25 0.01 Climatic R % 2 1 0.5 0.2 Climatic category 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. Terminations 5 Material Solder-coated 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 f1 6 f2 52 6 Marking f1 - f2 1.4 mm 0.5% and 1% tolerance resistors are colour coded with 5 bands, 2% tolerance has 4. IEC 62 colours are used. Lead Formed resistors can also be supplied. Standard options of Lancet, Radial and Goalpost forming are shown in Lead Form Information section. Standard Quantities Per Package Type MFR3 MFR4 MFR5 Large ammo pack 5000 5000 2500 Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. (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 Issue B * 03.02 137