Series BW V I T R O H M Insulated wirewound Resistors Axial, Fiberglass core Bakelite Moulded case ELECTRICAL SPECIFICATIONS Type BW234-0 BW235-0 P 1,1 2,1 25 Nominal Power rating W P 0,75 1,5 70 Resistance range 0R1 1K2 0R1 2K4 E-Series E24 (5 % ) E12 (10 % ) Tolerances % 5 (J) 10 (K) -6 -1 * Temperature coefficient 10 *K Depends on the value, please check the table below Temperature range C -55 +175 -1 Thermal resistance KW 140 80 Dielectric withstanding voltage V 700 1000 IEC115-1 clause 4.7 (1 min ) Insulation resistance 4 M > 10 IEC115-1 clause 4.6 Max. working voltage V RMS PERFORMANCE DATA Derating linear C 70175 (0W) Climatic category 55/175/56 Failure Rate -9 -1 10 h appr. 100 depends on value (Total, , max, 60% cont. lev.) Endurance % 5,0 IEC60115-1 clause 4.25 (P , 70 C , 1000 h ) 70 Damp heat, steady state % 2,0 IEC115-1clause 4.24 (40 C , 93 % r.h. , 56 d ) Climatic sequence % 2,0 IEC115-1 clause4.23 Terminal strength % 1,0 Terminal Tensile Strength N 40 Resistance to soldering heat % 0,2 IEC115-1 clause 4.12 (260 C , 10 s ) Solderability s Solder bath method (> 95% coverage) IEC 60068-2-20 3 0,3 (245 C 3 s ) Color code Marking IEC60062 Revision 201501 VITROHM PORTUGUESA, Lda. Est. Nacional 249-4, Trajouce 2765-653 S. Domingos de Rana PORTUGAL File Nr: 3235.18.450.102.01 Tel:+ 351 214 457 700 - Fax:+ 351 214 457 755 Germany Sales Tel:+ 49 4121 870 103 - e-mail: vitrohm.support yageo.com www.vitrohm.com 1 Series BW V I T R O H M DIMENSIONS mm Type L D d BW234-0 9,9 3,6 0,8 BW235-0 14,3 5,7 1,0 * * Special lead diameter 0,8mm available, type BW 235-006 ELECTRICAL PERFORMANCE -1 Temperature coefficient ppm K BWF237 BWF236 TC 600 0R1...0R15 TC 1000 0R1...0R16 TC 300 0R16...0R62 TC 800 0R18...0R68 TC 150 0R68...1K2 TC 400 0R75...2K4 PULSE RATING P P 70 1 ti 100 ms BW235 BW234 The curves are expressing the range, where no substantial effects are caused of recurrent pulses. A single pulse with a 3 5 times higher value will cause the destruction of the resistor Revision 201501 VITROHM PORTUGUESA, Lda. Est. Nacional 249-4, Trajouce 2765-653 S. Domingos de Rana PORTUGAL File Nr: 3235.18.450.102.01 Tel:+ 351 214 457 700 - Fax:+ 351 214 457 755 Germany Sales Tel:+ 49 4121 870 103 - e-mail: vitrohm.support yageo.com www.vitrohm.com 2