... NPR NPS 2-T220 T221 NHR NHS 2-T220 T221 Power Resistors 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 Operating Temperature Range Resistor Material Substrate Housing Connector Material Terminals Max. Torque Part Number - Resistance - Contact - Tolerance NHR 2-T221 C 1 ...
... Temperature of the backplate (°C) Dimension mm A 12.70 B 10.16 C 0.76 D 5.08 E 4.00 F 1.20 G 14.60 H 15.00 I 17.33 J 0.40 K 1.85 Riedon Inc. 300 Cypress Avenue SPECIFICATIONS Temperature Coefficient -50 - Temperature (°C) Derating Power Rating Notes - 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 : R Where: R 115 130 ...