UP Series Current Sensing Resistors • • • • • • • Resistances from 0.0005 to 0.05Ohms Tolerance to ±0.05% Power Rating to 5Watts Low Temperature Coefficient For Current Sensing and Shunt Applications Low inductance All Welded Construction SPECIFICATIONS Type Power Rating W @ 25°C Resistance Range UP-1 1 UP-2 UP-3 L W H A B D ±0.020 [ ±0.5 ] ±0.020 [ ±0.5 ] ±0.04 [ ±1.0 ] ±0.020 [ ±0.5 ] ( Max ) ±0.002 [ ±0.05 ] 0.001 to 0.05 0.700 [ 17.8 ] 0.200 [ 5.1 ] 0.275 [ 7.0 ] 0.115 [ 2.9 ] - 0.040 / 0.051 [ 1.0 / 1.3 ] 5 0.0005 to 0.002 1.00 [ 25.4 ] 0.250 [ 6.4 ] 0.440 [ 11.2 ] 0.220 [ 5.6 ] 1.400 [ 35.6 ] 0.081 [ 2.1 ] 3.5 0.003 to 0.05 1.00 [ 25.4 ] 0.250 [ 6.4 ] 0.375 [ 9.5 ] 0.115 [ 2.9 ] - 0.051 [ 1.3 ] Specification Value Tolerances ±0.05% to ±5% ( 1% Standard ) Temperature Coefficient ±90ppm/K ( Call Factory for Others ) Temperature Range -55°C to +275°C Inductance <10 nH Short Time Overload 5X Rated Power / 5s UP-1 / UP-3 Power Derating Curve 120 Power ( % ) 100 80 60 40 UP-2 20 0 0 50 100 150 200 250 300 350 Ambient Temperature (°C) Ordering Information Part Number - Resistance - Tolerance - TCR ( If not standard ) Example: UP-2 0.001 Ohm 1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 109 rev. 03/2006A