page 1 of 2 6/14.02 mra precision metal film resistors europes no 1 selling axial thin flm high precision resistor. stable flms are sputtered on to high purity alumina rods, then covered in tough epoxy to protect from any environmental extremes ? power dissipation up to 2w ? value range from r1 to 10m ? precision tolerance down to 0.05% ? low tcr 5ppm/oc ? rohs compliant characteristics tolerance (code): operating temperature: temperature coeffcient: overload: endurance: damp heat with load: solderability: temperature coeffcient: pulse overload: terminal strength: shelf life: 0.05%, 0.1% (b), 0.25 (c), 0.5% (d), 1% (f) -55c to +155c 5ppm/c , 10ppm/c , 15ppm/c, 25ppm/c, 50ppm/c, 100ppm/c 0.25% rated continuous working voltage =(p*r)*2.5 for 5 seconds 0.2%, 702?c, rated continuous working voltage for 1000 hours with 1.5 hrs on and 0.5 hrs off 0.3%, 402?c, 90 - 95% rh, rated continuous working voltage for 1000 hours with 1.5 hrs on and 0.5 hrs off 90% min coverage, 2455?c for 3 seconds by type, resistance value 25?c and 100?c 0.75%, 4 times rated continuous working voltage =(p*r) for 10,000 cycles with 1 second on and 25 seconds off tensile 2.5kg, direct load for 10 seconds in the direction of the terminal leads ?r 0.1%, 12 months at 25?c3?c, 80% rh maximum dimensions (mm) type l d h d 0.03 mra0104 3.3 +0.7/-0.2 1.8 0.3 29 2.0 0.45 mra0207 6.3 0.5 2.3 0.3 28 2.0 0.55 mra0309 9.0 0.5 3.2 0.5 26 2.0 0.65 MRA0412 11.5 1.0 4.5 0.5 35 2.0 0.78 mra0516 15.5 1.0 5.0 0.5 32 2.0 0.78 ordering procedure standard resistor: series, resistance value, tolerance, tcr, packaging (ta: taped ammo, tr: taped reel) e.g.: mra0104 10r b 15ppm ta d h l d derating curve 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 power rated % ambient temperature (c) ww w.arcolresistors.com for more information and ordering, please consult
page 2 of 2 the information contained herein does not form part of a contract and is subject to change without notice. arcol operate a policy of continual product development, therefore, specifcations may change. it is the responsibility of the customer to ensure that the component selected from our range is suitable for the intended application. if in doubt please ask arcol. arcol uk limited, threemilestone ind. estate, truro, cornwall, tr4 9lg, uk. t +44 (0) 1872 277431 f +44 (0) 1872 222002 e sales @ arcolresistors.com www.arcolresistors.com 6/14.02 mra precision metal film resistors electrical specifcations type wattage max. operating voltage resistance range / tolerance / tcr (ppm/oc) 0.05% tcr 0.1% tcr 0.25% tcr 0.5% tcr 1% tcr mra0104 1/8w 200v 10r - 1m 15ppm 25ppm 50 ppm 10r - 1m 15ppm 25ppm 50 ppm 10r - 4m99 15ppm 10r - 4m99 15ppm 1r - 1m 100ppm 10r - 10m 25ppm 50 ppm 10r - 10m 25ppm 50 ppm 1r - 10m 100ppm r1 - 10m 100ppm mra0207 1/4w 250v 10r - 1m 5ppm 10ppm 15ppm 25ppm 10r - 1m 5ppm 10ppm 15ppm 25ppm 50ppm 10r - 1m 5ppm 10ppm 15ppm 25ppm 50 ppm 10r - 1m 5ppm 10ppm 10r - 1m 10ppm 1r - 1m 100ppm 10r - 10m 15ppm 25ppm 50 ppm 10r - 10m 15ppm 25ppm 50 ppm 1r - 10m 100ppm r1 - 10m 100ppm mra0309 1/2w 350v 10r - 1m 5ppm 10ppm 15ppm 25ppm 10r - 1m 5ppm 10ppm 15ppm 25ppm 50ppm 10r - 1m 5ppm 10ppm 15ppm 25ppm 50 ppm 10r - 1m 5ppm 10ppm 10r - 1m 10ppm 1r - 1m 100ppm 10r - 10m 15ppm 25ppm 50 ppm 10r - 10m 15ppm 25ppm 50 ppm 1r - 10m 100ppm r1 - 10m 100ppm MRA0412 1w 450v 10r - 1m 15ppm 25ppm 50ppm 10r - 1m 15ppm 25ppm 50ppm 10r - 4m99 15ppm 10r - 4m99 15ppm 1r - 1m 100ppm 10r - 10m 25ppm 50 ppm 10r - 10m 25ppm 50 ppm 1r - 10m 100ppm r1 - 10m 100ppm mra0516 2w 500v 10r - 1m 15ppm 25ppm 50ppm 10r - 1m 15ppm 25ppm 50ppm 10r - 4m99 15ppm 10r - 4m99 15ppm 1r - 1m 100ppm 10r - 10m 25ppm 50 ppm 10r - 10m 25ppm 50 ppm 1r - 10m 100ppm r1 - 10m 100ppm
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