MT Series Low Ohm Power Resistors • • • • • • • Resistances from 0.003 to 0.10Ohms Tolerance to ±0.1% TCR’s to ± 20 ppm/K ( Four Terminal Version ) For Current Sensing and Shunt Applications All Welded Construction Low Inductance ( <10nH ) Four Terminal Versions Available (Consult Factory) SPECIFICATIONS Specification Value Resistance Range 0.003 to 0.10 Ohms Tolerances 2 Terminal: ±1% / ±5% ( Contact Factory for Others ) 4 Terminal: ±0.1% / ±0.5% / ±1% / ±5% ( Contact Factory for Others ) Temperature Coefficient See Chart Below Inductance <10nH Dielectric Strength 1000VAC ( 500VAC for MT-1A and MT-2A ) Insulation Resistance >1000 MOhms / Dry Environmental Performance DR Test Conditions Load Life ±1% 70°C / 90 min ON / 30 min OFF / 1000 hr Moisture Resistance ±1% 40°C / 90-95% RH / DC 0.1W / 1000 hr Temperature Cycling ±1% -40°C for 30 min / +125°C for 30 min / 1000 hr Short Term Overload ±1% 5X rated power for 5 seconds (MIL-STD 202) Power Derating Curve 500 120 400 100 Power ( % ) TCR ( ppm/K ) Temperature Coefficient of Resistance (TCR) 300 2 Terminal 200 100 0 4 Terminal 0 0.01 0.03 0.05 0.07 0.09 0.11 Resistance Value ( W ) 0.13 80 60 40 20 0 0 50 100 150 200 250 300 350 Ambient Temperature (°C) Ordering Information Part Number - Resistance - Tolerance - TCR ( if not standard ) - 4T ( if desired ) Example: MT-5 0.01 Ohm 1% 4T Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 76 rev. 03/2006A MT Series Low Ohm Power Resistors SPECIFICATIONS (continued) Type Power Rating Watts @ 25°C Dimensions A D C d W (4T) ±0.020” [±0.5mm] ±0.020” [±0.5mm] ±0.020” [±0.5mm] ±0.002” [±0.05mm] ±0.010” [±0.3mm] MT-1A 1 0.430 [10.9] 0.120 [3.0] 0.590 [15.0] 0.025 [0.6] - MT-2A 2 0.430 [10.9] 0.120 [3.0] 0.590 [15.0] 0.032 [0.8] - MT-2B 3 0.580 [14.7] 0.200 [5.1] 0.665 [16.9] 0.032 [0.8] - MT-2C 3 0.500 [12.7] 0.250 [6.4] 0.625 [15.9] 0.032 [0.8] - MT-3 4 0.600 [15.2] 0.250 [6.4] 0.675 [17.1] 0.032 [0.8] 0.125 [3.2] MT-4 4.5 0.750 [19.1] 0.250 [6.4] 0.750 [19.1] 0.040 [1.0] 0.125 [3.2] MT-5 5 0.890 [22.6] 0.335 [8.5] 0.820 [20.8] 0.040 [1.0] 0.125 [3.2] MT-6 6 1.055 [26.8] 0.395 [10.0] 0.903 [22.9] 0.040 [1.0] 0.125 [3.2] MT-10 10 1.755 [44.58] 0.355 [9.02] 1.338 [34.0] 0.040 [1.0] 0.125 [3.2] Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 77 rev. 03/2006A