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| 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) SolderReflowSecureat260C/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 -40C to 175C Thick Film Al2O3 Epoxy Cu / Ni-flash / lead-free tinned lead-free soldering 260C / 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 175C. 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 |
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