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NPS2-T12611OHMS Datasheet(PDF) 2 Page - Riedon Powertron |
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NPS2-T12611OHMS Datasheet(HTML) 2 Page - Riedon Powertron |
2 / 2 page Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com Page 84 07/13 Derating Dimensions SPECIFICATIONS (continued) NPS 2-T126 Power SMD Resistors Dimension mm tol. (±mm) inches tol. (±inches) A 8.26 0.2 0.33 0.008 B 8.13 0.2 0.32 0.008 C 6.35 0.1 0.25 0.004 D 4.31 0.1 0.17 0.004 E 1.35 0.1 0.05 0.004 F 5.08 0.1 0.20 0.004 G 0.76 0.1 0.03 0.004 H 2.79 0.1 0.11 0.004 I 0.8 0.1 0.03 0.004 J 9.55 0.2 0.38 0.008 K 10.92 0.2 0.43 0.008 L 12.32 0.2 0.49 0.008 M 0.6 0.1 0.02 0.004 N 1.47 0.1 0.06 0.004 Dimension mm inches A 8.51 0.335 B 7.87 0.310 C 14.1 0.555 D 5.08 0.200 E 1.65 0.065 F 3.81 0.150 Power Rating Notes - The NPS Series Resistors must be attached to a suitable heat- sink. The maximum internal resistor temperature is 175°C. To specify an appropriate heatsink use the following formula : R q H = TMAX - ( P x RqR ) - TA P Where: R q H = Thermal Resistance of Heatsink ( K/W ) R q R = Thermal Resistance of Resistor ( K/W ) T MAX = Maximum Temperature of Resistor T A = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) 0 20 40 60 80 100 120 0 25 40 55 70 85 100 115 130 145 155 175 Temperature of the backplate (°C) |
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