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| Flameproof Power Oxide Resistors FA80 Series Welwyn Components * * * Rugged metal oxide film Flameproof protection Low operating temperature Electrical Data FA84 Power rating at 70C Resistance range Limiting element voltage TCR Resistance tolerance Values Thermal impendance Ambient temperature range C/Watt C watts ohms volts ppm/C % 2.0 16R - 100K 350 500 5, 10 E24 preferred 90 -55 to 155 Physical Data Dimensions (mm) & Weight (g) PCB mounting centres 20.3 Min. bend radius 1.2 Type FA84 L Max 14.5 D Max 5.1 f min 23.6 d nom 0.8 Wt.nom 1.1 d D L f Construction The resistance element is deposited on a high purity ceramic rod. End caps are force fitted and termination wires welded to the caps. The element is adjusted to the required resistance value by a helical cut; finally the cement protection is applied to the resistor body before marking with indelible ink. Marking Resistors are colour coded with 4 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. Terminations Material Strength Solder-coated copper wire. The terminations meet the requirements of IEC 68.2.21 Flammability The resistors will not burn or emit incandescent particles under any condition of applied temperature or 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 Welwyn's own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Issue B * 03.02 (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 151 Flameproof Power Oxide Resistors FA80 Series Welwyn Components Performance Data Maximum Load at 35% rated power: 1000 hrs at 125C Shelf life: 12 months at room temperature Derating from rated power at 70C Climatic Climatic category Temperature rapid change Resistance to solder heat R % R % R % R % R % 3 2 Zero at 235C 1 40/125/56 0.5 0.5 Packaging All FA84 resistors are supplied tape packed ready for loading onto automatic sequencing and insertion machines. The standard taping method and critical dimensions are shown in Figure 1. Component wires will not protrude beyond the outside edge of the tapes. All taped resistors will be supplied either on reels or in ammopacks, depending upon ordered quantities. Standard Quantities Per Package Type Reel Ammo pack FA80 1000 1000 10 f1 6 67 f2 6 Body Location f1 - f2 1.4 mm (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 152 Issue B * 03.02 |
Price & Availability of FA84
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