flameproof power oxide resistors FA80 series rugged metal oxide film flameproof protection low operating temperature fa84 power rating at 70? watts 2.0 resistance range ohms 16r - 100k limiting element voltage volts 350 tcr ppm/? 500 resistance tolerance % 5, 10 values e24 preferred thermal impendance c/watt 90 ambient temperature range ? -55 to 155 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. ?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 electrical data issue b ?03.02 a subsidiary of tt electronics plc welwyn components 151 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. flammability the resistors will not burn or emit incandescent particles under any condition of applied temperature or power overload. 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. terminations 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 dimensions (mm) & weight (g) pcb min. mounting bend type l max d max f min d nom centres radius wt.nom fa84 14.5 5.1 23.6 0.8 20.3 1.2 1.1 physical data l d f d
flameproof power oxide resistors FA80 series ? 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 welwyn components 152 67 f 1 f 2 6 6 10 body location f 1 ?f 2 1.4 mm 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. maximum load at 35% rated power: 1000 hrs at 125? ? r % 3 shelf life: 12 months at room temperature ? r % 2 derating from rated power at 70? zero at 235? climatic ? r % 1 climatic category 40/125/56 temperature rapid change ? r % 0.5 resistance to solder heat ? r % 0.5 performance data type FA80 reel 1000 ammo pack 1000 standard quantities per package
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