PF2272-50RJ1 RIEDON | Alldatasheet

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Technical content

Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 2/15 SPECIFICATIONS

  • Resistances from 0.1 Ohms to 100K Ohms
  • Power Rating to 600 Watts
  • Resistance Tolerances to ±1%
  • TCR of ±100ppm/C
  • TO-227 (TO-238) Housing
  • M4x5mm Screws Included
  • Isolated Back Plate Thin & Thick Film Power Resistors Type PF2272 PF2274 PF2276 Power Rating (with heatsink) 200 W 300 W 600 W Additional Lead Confi gurations Y / Z Y / Z Y / Z Resistance Range 0.1 to 100K Ohms 0.1 to 100K Ohms ( 0.1 to 1 Ohm only available Terminal Z ) 50 to 1K Ohms Resistance Values E12 ( Plus 2 Ohm and 5 Ohm ) Thermal Resistance 0.5 °C/W 0.32 °C/W 0.11 °C/W Tolerances 5% ( 1% optional ) Temperature Coeffi cient ±100 ppm/°C Operating Temperature -55°C to 155°C MAX Continuous Voltage √ (P * R) MAX Continuous Current 55A Isolation Voltage 2500VAC Load Life ( 25°C, 90m ON, 30m OFF, 1000hr ) ±1% Humidity ( 40°C, 90-95% RH, DC0.1W, 1000hr ) ±1% Temp. Cycle ( -55°C 30m, 120°C 30m, 20X) ±1% Vibration ( 0.75mm, 100m/s2, 10-54Hz, 10X, XYZ ) ±0.25% Insulation Resistance > 1000 MegOhm Technology Thick Film Thin Film Substrate AlO Alumina / Cu Flange AlN (*) For standard terminal style omit letter

Ordering Information

0.1 to 100K Ohms 50 to 1K Ohms Terminal Style (*) Y Z Tolerance 5 % () () 1% Tolerance Optional Part Description: Part Type - Terminal Style - Resistance - Tolerance PF2274Y 10 Ohms 5%

Riedon Inc. 300 Cypress Avenue Alhambra CA 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 2/15 PF2270 Series Thin Film Power Resistors Power Rating Notes - The PF2270 Series Foil 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 : RθH = TMAX - ( P x RθR ) - TA P Where: R θH = Thermal Resistance of Heatsink ( K/W ) R θR = Thermal Resistance of Resistor ( K/W ) T MAX = Maximum Temperature of Resistor T A = Ambient Temperature of Heatsink ( °C ) P = Power Through Resistor ( W ) SPECIFICATIONS (continued) 0 25 50 75 100 125 150 175 200 100 120 Power ( % ) Backplate Temperature (°C) Power Derating Curve Note: Style Z is not a true 4-terminal measurement Current can be applied to any pins PF2272 PF2274 PF2276 Terminal Confi guation & Schematics Dimension mm ( ± mm ) inches ( ± inches ) A 38.0 0.2 1.50 0.008 B 25.0 0.2 0.98 0.008 C 11.8 0.5 0.47 0.020 D 4.2 0.1 0.165 0.008 E 13.0 0.3 0.512 0.012 F 15.0 0.4 0.591 0.016 G 30.0 0.1 1.181 0.004 H 10.0 0.2 0.394 0.008 PF2272Y PF2274Y PF2276Y PF2272Z PF2274Z PF2276Z 4 3 2 1 4 3 2 1 4 3 STANDARD Y Z Mounting Notes - The PF2270 Series Thin Film Resistors must be attached to a suitable heatsink. Mount resistor using thermal grease to a clean, fl at surface. Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force. Torque mount- ing screw to 8 in-lbs ( 0.9 N-m ). Back plate is isolated from both pins.