KPR KPN KHR KHN T227 Powertron * * * * * Resistances from 0.05Ohm to 5MOhms Power Rating to 200Watt Resistance Tolerances to 1% TCR to 50ppm/K TO-227 (TO-238) Housing SPECIFICATIONS Type KPR 2/4-T227 KPN 2-T227 Resistance Range KHR 2/4-T227 KHN 2-T227 0.05 Ohms to 5 MOhms Power rating with heatsink 100 W 200 W Thermal Resistance Rthj-c 0.7 K/W 0.35 K/W Tolerances from 0.05 Ohms from 0.1 Ohms 2% / 5% / 10% 1% / 2% / 5% / 10% Stability 1% Temperature Coefficient 0.05 to 0.099 Ohms 0.1 to 5 MOhms 300 ppm/K 100 ppm/K upon request 50 ppm/K Voltage Proof Standard 1.5 kVDC / upon request 2.5 kVDC Inductivity 50 nH Capacity 35 pF Max. Voltage depending on resistance value max. working voltage (VDC) 10000 1000 100 10 1 10 Ohm Operating Temperature Range Resistor Material 100 Ohm 1 kOhm Connector Material 10 kOhm 100 kOhm -55 to 155C Thick Film Substrate Housing 5 kOhm Al2O3 Epoxy or Plastic Cu tinned Terminals 2 or 4 Max. Torque backplate terminals 1.5 Nm 1.3 Nm Ordering Information Part Number - Resistance - Tolerance Standard: KHR 2-T227 10 Ohms 5% / Special: KHR 2-T227 10 Ohms 5% 2.5 kVDC Document Number: 64211 Revision: 20-09-10 For technical questions, contact: powertron@vishaypg.com www.powertron.de 1 KPR KPN KHR KHN T227 Powertron SPECIFICATIONS (continued) Temperature Coefficient 100ppm/K R/R (ppm) 7000 50ppm/K 2000 -3000 -8000 -50 -25 0 25 50 Derating 120 Power ( % from nominal power) 75 Temperature (C) 100 125 Power Rating Notes - The KPR / KPN / KHR / KHN Series Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 155C. To specify an appropriate heatsink use the following formula : 100 80 60 RqH = TMAX - ( P x RqR ) - TA P 40 20 Where: 0 50 75 85 100 115 130 145 155 Temperature of the backplate (C) 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 ) Pulse Stability 10kJ 3kJ 1kJ Pulse Energy 300J 100J 30J 10J 3J 1J 0,3J 0 10 50 20 10 5 2 1 5 0, 2 0, 1 0, 05 0, 02 0, 5 01 0, 00 2 0, 1 00 0, 00 05 0, 0, 00 0, 00 02 0,1J Pulse time (s) www.powertron.de 2 For technical questions, contact: powertron@vishaypg.com Document Number: 64211 Revision: 20-09-10 KPR KPN KHR KHN T227 Powertron SPECIFICATIONS (continued) Dimensions and Attachment Variations Dimension mm tol. (mm) inches tol. (inches) A 26 0.5 1.02 0.020 B 38 0.5 1.50 0.020 C 12.7 0.2 0.50 0.008 D 4 0.2 0.16 0.008 E 30 0.2 1.18 0.008 F 15 0.2 0.59 0.008 G 4.1 0.2 0.16 0.008 H 10 0.2 0.39 0.008 I 8 0.2 0.31 0.008 J 4 0.2 0.16 0.008 K 2 0.2 0.08 0.008 L 0.8 0.1 0.03 0.004 M M4 N 10 0.2 0.39 0.008 O 11.9 0.2 0.47 0.008 KPR/KHR 2-T227 KPR/KHR 4-T227 KPR/KHR 2-T227 dia1 KPR/KHR 2-T227 dia2 Document Number: 64211 Revision: 20-09-10 M4 For technical questions, contact: powertron@vishaypg.com KPN/KHN 2-T227 www.powertron.de 3 Legal Disclaimer Notice Vishay Precision Group Disclaimer ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE. Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay Precision Group"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. The product specifications do not expand or otherwise modify Vishay Precision Group's terms and conditions of purchase, including but not limited to, the warranty expressed therein. Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Information provided in datasheets and/or specifications may vary from actual results in different applications and performance may vary over time. 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Please contact authorized Vishay Precision Group personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document No.: 63999 Revision: 27-Apr-11 www.vishaypg.com 1