 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Metal Film Resistors Welwyn Components MFR Series * * * Professional grade approved to BSCECC 40101-803 and 019 Tolerances down to 0.5% Temperature coefficient down to 50ppm/C Electrical Data Power rating at 70C Resistance range Limiting element voltage TCR Resistance tolerance watts ohms volts ppm/C % MFR3 0.4 10R - 1M 200 50 1 MFR4 0.5 1R0 - 10M 350 50 0.5, 1,2 MFR5 0.75 1R0 - 1M 350 10:150 >10:100* 0.5, 1,2 * Note:- Tighter TCR'S are available on professional grade, 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 % 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 1,2 1,2 BC 0.125 10 to 1M 200 50 0.5, 1, 2 BK 0.125 10 to 1M 200 100 0.5, 1, 2 EZ 0.5 10 to 1M0 350 100 1,2 CC 0.25 10 to 1M 250 50 0.5, 1, 2 EX 0.5 10 to 1M 350 250 1,2 CK 0.25 10 to 1M 250 100 0.5, 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 Product grades available E24, E96 preferred C/watt C 150 commercial 140 -55 to 155 commercial, professional 112 Physical Data Dimensions (mm) & Weight (g) Type MFR3 MFR4 MFR5 Professional Commercial Professional Commercial Professional Commercial L max 3.5 3.7 6.2 6.8 9.0 10.0 D max 1.8 2.0 2.5 3.0 3.6 3.7 F min 22.4 22.4 21.0 21.0 19.6 19.6 d nom 0.5 0.45 0.6 0.55 0.8 0.6 PCB mount centres Min bend radius Wt. nom 7.6 7.6 10.2 10.2 12.7 12.7 0.5 0.5 0.6 0.6 1.2 0.6 0.1 0.1 0.3 0.3 0.5 0.5 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 Issue D * 05.07 (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 135 Metal Film Resistors MFR Series Welwyn Components 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 0.5 0.25 0.25 0.1 0.1 >1G 400 min Data available upon request 0.03 0.2 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 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 500 min 1 Not Specified CECC 40101-803 Requirements Actual Performance Maximum Typical 0.8 0.5 0.1 See Graph 2 See Graph 2 0.07 0.01 0.2 0.3 0.04 0.07 0.01 0.1 >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 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 D * 05.07 Metal Film Resistors MFR Series Welwyn Components Performance Data - Type MFR 5 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% V/V ohms volts R% R% R% R% R% 2 Not specified zero at 155C 0.5 2 55/125/56 2 0.5 0.5 0.5 Not Specified >1G 700 min 1 Not Specified zero at 155C 0.25 1 55/125/56 1 0.25 0.25 0.25 Not Specified >1G 500 min 0.5 0.25 0.25 0.1 0.1 >1G 700 min 0.3 0.04 0.07 0.01 0.07 >1G 700 min 0.25 0.5 0.01 0.2 CECC 40101-803 Requirements Actual Performance Maximum Typical 0.9 0.5 0.1 See Graph 3 See Graph 3 0.07 Data available upon request Graph 3 - Load for 1000 hours at 70C: maximum changes Packaging 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. Alternative packaging available by request. Construction 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. Terminations Material Hot tin dipped copper wire The terminations meet the requirements of IEC 68.2.21 Strength 5 f1 6 52 f2 6 f1 - f2 1.4 mm Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2 Marking 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 available. 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 D * 05.07 137 Metal Film Resistors MFR Series Ordering Procedure Example: Professional grade MFR4 at 4.7 kilohms and 1% tolerance in ammo pack box of 5000 pieces - MFR4 - 4K7 F I Type Value (use IEC62 code) Tolerance (use IEC62 code) D F G 0.5% 1% 2% Packing / Grade C MFR3, MFR4 Ammo MFR5 MFR4 MFR5 5000/box 2500/box 5000/box 2500/box CECC release is not available for commercial grade CECC release is optionally available for professional grade * I * For CECC released product state on order the CECC number and style. Example: MFR4-4K7FI CECC40101-019 FZ (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 D . 05.07 |
Price & Availability of MFR3
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |