NHR2-T220

NPR NPS 2-T220 T221 NHR NHS 2-T220 T221 Power Resistors • • • • • • • Resistances from 0.02Ohm to 100kOhms Power Rating to 50Watt Resistance Tolerances to ±1% TCR to ±50ppm/K Load Stability to 0.5% TO-220 Housing Convenient SMD D2Pak Available SPECIFICATIONS Type Resistance Range Power rating free air 70°C with heatsink Thermal Resistance Rthj-c Tolerances from 0.02 Ohms from 1.0 Ohms Stability Temperature Coefficient 0.02 to 0.049 Ohms 0.05 to 0.099 Ohms 0.1 Ohms to 100 kOhms Voltage Proof Max. Voltage depending on resistance value 2.0 kVDC 2% / 5% 1% / 2% / 5% 0.5% ±600 ppm/K ±300 ppm/K ±100 ppm/K upon request ±50 ppm/K 1.5 kVDC NPR / NPS 0.02 Ohms to 100kOhms 1.5 W 30 W 3.5 K/W NHR / NHS 0.02 Ohms to 15kOhms 1.5 W 50 W 2.1 K/W 10000 max. working voltage (VDC) 1000 100 10 1 2 Ohm Operating Temperature Range Resistor Material Substrate Housing Connector Material Terminals Max. Torque 10 Ohm 100 Ohm 1 kOhm 5 kOhm 10 kOhm 100 kOhm -40 to 155°C Thick Film Al2O3 Epoxy or PPS Cu tinned 2 T220: 1 Nm T221: 0.8 Nm Ordering Information Part Number - Resistance - Contact - Tolerance NHR 2-T221 C 1.1 kOhms 1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 80 rev. 03/2006A NPR NPS 2-T220 T221 NHR NHS 2-T220 T221 Power Resistors SPECIFICATIONS (continued) Temperature Coefficient 100ppm/K 7000 ∆R/R (ppm) 50ppm/K 2000 -3000 -8000 -50 -25 0 Temperature (°C) 25 50 75 100 125 120 Derating Power Rating Notes - Power ( % from nominal power) 100 80 60 40 20 0 25 50 85 100 115 130 145 155 Temperature of the backplate (°C) The NPR / NHR Series Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 155°C. To specify an appropriate heatsink use the following formula : RqH = TMAX - ( P x RqR ) - TA P Where: RqH = Thermal Resistance of Heatsink ( K/W ) RqR = Thermal Resistance of Resistor ( K/W ) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) Dimensions NPS / NHS 2-T220 Dimension A B C D E F G H I J K mm 12.70 10.16 0.76 5.08 4.00 1.20 14.60 15.00 17.33 0.40 1.85 tol. (±mm) 0.2 0.2 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.1 inches 0.50 0.40 0.03 0.20 0.16 0.05 0.57 0.59 0.68 0.02 0.07 tol. (±inches) 0.008 0.008 0.004 0.004 0.004 0.004 0.008 0.008 0.008 0.004 0.004 Dimension A B C D E F mm 12.10 11.16 18.33 5.08 1.76 3.20 inches 0.476 0.439 0.722 0.200 0.069 0.126 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 81 rev. 03/2006A NPR NPS 2-T220 T221 NHR NHS 2-T220 T221 Power Resistors SPECIFICATIONS (continued) NPR / NHR 2-T220 Dimension A B C D E F G H I J K L M N O mm 17.30 10.16 6.00 Ø3.7 16.40 5.08 0.76 1.30 13.80 2.00 1.20 4.00 2.90 0.40 1.85 tol. (±mm) 0.2 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.1 inches 0.68 0.40 0.24 Ø0.146 0.65 0.20 0.03 0.05 0.54 0.08 0.05 0.16 0.11 0.02 0.07 tol. (±inches) 0.008 0.008 0.004 0.004 0.008 0.004 0.004 0.004 0.008 0.004 0.004 0.004 0.004 0.004 0.004 NPR / NHR 2-T221 tol. (±mm) 0.2 0.2 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.1 0.1 tol. (±inches) 0.008 0.008 0.004 0.004 0.008 0.004 0.004 0.004 0.008 0.004 0.004 0.004 0.004 0.004 0.004 Dimension A B C D E F G H I J K L M N O mm 18.30 10.16 3.70 Ø3.2 16.40 5.08 0.76 1.30 13.80 2.00 1.20 4.00 3.90 0.40 1.85 inches 0.72 0.40 0.15 Ø0.126 0.65 0.20 0.03 0.05 0.54 0.08 0.05 0.16 0.15 0.02 0.07 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 82 rev. 03/2006A