DATA SHEET LEADED POWER RESISTORS CR - PRECISION wirewound, down to 0.25% tolerance Product Specification - Jun. 18, 2003 V.0 UP TO 7.2 W Series CR Precision Power Wirewound resistors axial, ceramic carrier, coated Specification Type CR251-0 CR253-0 CR254-0 CR255-0 CR256-0 CR257-0 CR258-0 CR259-0 Power rating 0 = 235C P40 P70 W 1,1 1,0 2,2 2,0 3,0 2,5 Resistance range Tolerance 3,3 3,0 4,0 3,5 5,0 4,3 Rmin. ... Rmax..: 5, 2, 1; R > _ 1R0: 0,5 10-6 K-1 0 20 working voltage VRMS P 70 * R Insulation voltage (1min.) VRMS max. 75V Insulation resistance not insulated Derating linear C 70 ... 350 (0W) Climatic category C Thermal resistance KW-1 280 140 112 94 80 10-9 h-1 appr. 10, depends on value Endurance (P70 , 70C, 1000h, intm.) R % R 3,0 average Damp heat, steady state (40C, 93% r. h., 56d) R % R 1,0 Climatic sequence (IEC 115-1/23) R % R 1,0 Resistance to soldering heat (260C, 10s, 3mm) R R Marking File: CR_E_108 (07) % s Terminal tensile strength 43 - 55 ... 350 Failure rate (Total, 0 max., 60% conf. lev.) Terminal strength 56 55/200/56 Temperature range Solderability 7,2 6,5 see Page 2 % Temperature coefficient 5,5 5,0 R R N 65 0,2 typ. 2,5 Flowtime, solderglobule test, IEC 60068-2-20 % 0,2 50 printed in clear Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297 29.04.03 Page 1 of 3 Series CR Precision Power Wirewound resistors axial, ceramic carrier, coated Type Resistance range Temperature Coefficient (-20 C to +120 C) min. max. CuNi44 020 ppm/K NiCr20AlSi 010 ppm/K CR251-0 0R1 82R _ R50 > < 62R _ 62R > _ 82R < CR253-0 0R1 360R _ R10 > < 160R _ 160R > _ 360R < CR254-0 0R1 360R _ R10 > < 160R _ 160R > _ 360R < CR255-0 0R1 470R _ R10 > < 220R _ 200R > _ 470R < CR256-0 0R1 750R _ R15 > < 330R _ 330R > _ 750R < CR257-0 0R2 1K1 _ R20 > < 430R _ 430R > _ 1K1 < CR258-0 0R2 1K3 _ R20 > < 430R _ 430R > _ 1K3 < CR259-0 0R3 2K _ R30 > < 800R _ 800R > _ 2K0 < Dimensions in mm: Type L max. oD * max. od CR251-0 9,0 3,0 0,65 CR253-0 14,5 4,0 0,65 CR254-0 12,6 5,5 0,80 CR255-0 15,0 8,5 0,80 CR256-0 17,0 5,5 0,80 CR257-0 18,0 8,5 0,80 CR258-0 22,0 8,5 0,80 CR259-0 27,0 8,5 0,80 * R <_ 1R0 File: CR_E_108 (07) Dmax. +1 Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297 29.04.03 Page 2 of 3 Series CR Precision Power Wirewound resistors axial, ceramic carrier, coated Packaging: Ordering example: CR 259-0 Type File: CR_E_108 (07) Type Packaging Pieces Pack.-Code CR251-0 taped 1000 T CR253-0 taped 1000 T CR254-0 taped 1000 T CR255-0 taped 500 T CR256-0 taped 1000 T CR257-0 taped 500 T CR258-0 taped 500 T CR259-0 taped 500 T 1 Tolerance T Pack.-Code 10R R-Value Yageo Europe GmbH Ramskamp 70 D-25337 Elmshorn Germany T.: +49 4121 870-0 F.: +49 4121 870-297 29.04.03 Page 3 of 3