UB-2

UB Series Silicone Coated Power Resistors • • • • • • • Resistances from 0.005 to 260kOhms Power Rating 1 to 18Watts Resistance Tolerances to ± 0.01% Low TCR: ± 20ppm/K Standard MIL-R-26 / MIL-R-39007 Power Ratings Temperature Range: -55°C to +350°C ( “V” Rating ) Non-Inductive Windings Available SPECIFICATIONS Wattage Rating ( Watts ) U UB-1 UB-23 UB-3 UB-5 UB-5C UB-6 UB-10 UB-12 UB-15 1 Dimensions Maximum Ohms 2 ±0.062” [±1.6mm] Type A V 1.5 2 3 5 7 8 10 12 18 3.4k 7.5k 10k 25k 32k 50k 95k 150k 260k ±0.031” [±0.8mm] B ±0.002” [±0.05mm] 0.020 [0.5] 0.025 [0.6] 0.020 [0.5] 0.025 [0.6] 0.025 [0.6] 0.020 [0.5] 0.032 [0.8] 0.032 [0.8] 0.040 [1.0] 0.040 [1.0] 0.040 [1.0] 0.040 [1.0] C 1 Maximum Working Voltage MIL-R-26 / MIL-R-39007 Style RW-81 RWR-81 RWR-82 RW-80 RWR-80 1 1.5 2 4 5 6 7 10 15 0.250 [6.4] 0.312 [7.9] 0.406 [10.3] 0.560 [14.2] 0.500 [12.7] 0.625 [15.9] 0.875 [22.2] 1.220 [31.0] 1.780 [45.2] 0.085 [2.2] 0.078 [2.0] 0.094 [2.4] 0.187 [4.7] 0.218 [5.5] 0.250 [6.4] 0.312 [7.9] 0.312 [7.9] 0.375 [9.5] 33 42 80 162 194 258 425 607 1050 RW-84 Lead Diameter: 18 AWG = 0.040” / 20 AWG = 0.032” / 22 AWG = 0.025” / 24 AWG = 0.020” Where more than one lead is listed / the top value is Standard 2 For non-inductive windings / divide maximum resistance by 2 3 This part does not meet the RoHS directive - call factory for details Ordering Information For Non-Inductive Windings / insert the letter “N” ( i.e. UBN-5 ) Part Number - Resistance - Tolerance - TCR ( If not standard ) Example: UB-3 10 Ohm 1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 103 rev. 03/2006A UB Series Silicone Coated Power Resistors SPECIFICATIONS (continued) Specification Tolerances Temperature Coefficient Value ±0.01% to ±10% ( 1% Standard ) >10W : ±20ppm/K 1W to10W : ±50ppm/K