FPR FNR 2-T227 FPR FNR 4-T227 Powertron * * * * * Resistances from 0.001Ohm to 100Ohms Power Rating to 80Watt Resistance Tolerances to 0.1% TCR to 15ppm/K Load Stability to 0.1% SPECIFICATIONS Type Terminals Resistance Range FPR 2-T227 FPR 4-T227 FNR 2-T227 FNR 4-T227 2 4 (kelvin connection) 2 4 (kelvin connection) 0.01 to 100 Ohms 0.001 to 100 Ohms 0.01 to 100 Ohms 0.001 to 100 Ohms Power Rating (with heatsink) 60W Thermal Resistance Rthj-c 80W 1.3 K/W Tolerances 1.0 K/W 0.1% / 1% / 2% / 5% (others upon request) Stability 0.1% / 0.2% / 0.5% (depends on stress) Temperature Coefficient 15 ppm/K (20 to 60C) from R < 0.02 Ohms 20 ppm/K (20 to 60C) FPR 2-T227 / FNR 2-T227 TK Shift depends from resistance value (see graph next page) Voltage Proof 1.5 kV DC Thermal EMF < 1 V/K Max. Current 50A (higher upon request) Operating Temperature -40C to 130C Resistor Material Metalfoil CuNiMn (DIN 17471) Substrate Al2O3 Housing AlN Epoxy Connector Material Cu / tinned or nickel plated Max. Torque backplate: 1.5Nm terminals: 1.3 Nm Ordering Information Part Number - Resistance - Tolerance FPR 2-T227 1.1 Ohms 1% Document Number: 64207 Revision: 20-09-10 For technical questions, contact: powertron@vishaypg.com www.powertron.de 1 FPR FNR 2-T227 FPR FNR 4-T227 Powertron SPECIFICATIONS (continued) Temperature Coefficient 4000 +15ppm/K TCR-Shift (ppm/K) 200 0 -15ppm/K Limit 2 (3s) 50 Nominal DR/R Limit 1 (3s) -20 0 20 40 60 80 100 120 140 200 50 0 2 -8000 -40 100 -6000 20 -4000 100 5 -2000 150 10 2000 DR/R (ppm) table A 250 Resistance Value (mOhm) Temperature (C) Derating and Stability Power Rating Notes - Power ( % from nominal power) 120 100 0.5% 80 0.2% 60 0.1% The FPR/FNR Series Foil Resistors must be attached to a suitable heatsink. The maximum internal resistor temperature is 130C for a 0.5% stability part. To specify an appropriate heatsink use the following formula : RH = TMAX - ( P x RR ) - TA P 40 20 Where: 0 25 50 85 100 115 RH = Thermal Resistance of Heatsink ( K/W ) RR = Thermal Resistance of Resistor ( K/W ) TMAX = Maximum Temperature of Resistor TA = Ambient Temperature of Heatsink ( C ) P = Power Through Resistor ( W ) 130 Tem perature of the backplate (C) Dimensions and Attachment Variations FPR/FNR 2-T227 www.powertron.de 2 FPR/FNR 4-T227 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 For technical questions, contact: powertron@vishaypg.com M4 Document Number: 64207 Revision: 20-09-10 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