NPS2-T126

NPS 2-T126 Power SMD Resistors In Stock at DIGI-KEY • • • • • • • Resistances from 0.025Ohm to 10kOhms Power Rating to 25Watt Resistance Tolerances to ±1% TCR to ±100ppm/K Load Stability to 0.5% TO-126 Housing (D-Pak) Solder Reflow Secure at 260°C / 20s SPECIFICATIONS Type Terminals Resistance Range Power Rating (with heatsink) Thermal Resistance Rthj-c Tolerances (others upon request) Stability Temperature Coefficient (TCR 50ppm upon request) Voltage Proof Operating Temperature Resistor Material Substrate Housing Connector Material Reflow soldering ±500 ppm/K ±400 ppm/K 2.0 kV DC -40°C to 175°C Thick Film Al2O3 Epoxy Cu / Ni-flash / lead-free tinned lead-free soldering 260°C / 20s 2% / 5% 0.5% ±300 ppm/K ±100 ppm/K 0.025 to 0.049Ohms 0.05 to 0.099Ohms 25 W 6.0 K/W 1% / 2% / 5% NPS 2-T126 2 0.1 to 0.99Ohms 1Ohms to 10kOhms Ordering Information Part Number - Resistance - Tolerance NPS 2-T126 1.1 Ohms 1% Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 83 rev. 03/2006A NPS 2-T126 Power SMD Resistors SPECIFICATIONS (continued) Derating 120 100 Power (% from nominal power) Power Rating Notes - 80 60 40 20 0 0 25 40 55 70 85 100 115 130 145 155 175 Temperature of the backplate (°C) The NPS Series Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 175°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 Dimension A B C D E F G H I J K L M N mm 8.26 8.13 6.35 4.31 1.35 5.08 0.76 2.79 0.8 9.55 10.92 12.32 0.6 1.47 tol. (±mm) 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.2 0.1 0.1 inches 0.33 0.32 0.25 0.17 0.05 0.20 0.03 0.11 0.03 0.38 0.43 0.49 0.02 0.06 tol. (±inches) 0.008 0.008 0.004 0.004 0.004 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 8.51 7.87 14.1 5.08 1.65 3.81 inches 0.335 0.310 0.555 0.200 0.065 0.150 Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 (626) 284-1704 Page 84 rev. 03/2006A