USL Series Powertron * * * * * * * UAL-25-4T UAL-25-4 Power Rating 5 to 300Watts All Welded Construction Resistances from 0.005 to 250kOhms Tolerance to 0.01% High Overload and Pulse Handling Low TCR: 20ppm/K Standard Four Terminal Versions Available UAL-25-4TR SPECIFICATIONS Type MIL-R-39009 MIL-R-18546 Style Commercial MIL Free Air UAL-5 RER-60 / RE-60 7.5 a 5a 4.5 0.01 to 22K UAL-10 RER-65 / RE-65 12.5 a 10 a 7.5 0.01 to 47K UAL-25 RER-70 / RE-70 25 b 20 b 12 0.01 to 90K UAL-50 RER-75 / RE-75 50 c 30 c 20 0.01 to 250K UAL-100 RER-77 / RE-77 100 d 75 d 40 0.01 to 50K UAL-180 - 180 d - - 0.01 to 50K UAL-250 RER-80 / RE-80 250 d 120 d 100 0.01 to 50K UAL-300 - 300 e - 75 0.005 to 100K Power Rating ( W @ 25C ) 1 a b c d e Resistance Range1 For non-inductive windings, divide maximum resistance by 2 Heatsink Required : 0.040 [1.0] Alum. Plate, 129 in2 [832 cm2] or equiv. Heatsink Required : 0.040 [1.0] Alum. Plate, 167 in2 [1077 cm2] or equiv. Heatsink Required : 0.059 [1.5] Alum. Plate, 291 in2 [1877 cm2] or equiv. Heatsink Required : 0.125 [3.2] Alum. Plate, 294 in2 [1896 cm2] or equiv. Heatsink Required : 0.125 [3.2] Alum. Plate, 895 in2 [5780 cm2] or equiv. Ordering Information For Non-Inductive Windings / insert the letter "N" ( i.e. UALN-25 ) Part Number - Resistance - Tolerance - TCR ( If not standard ) Example: UAL-25 10 Ohm 1% Document Number: 64325 Revision: 20-09-10 For technical questions, contact: powertron@vishaypg.com www.powertron.de 1 UAL Series Powertron SPECIFICATIONS (continued) Specification Value Tolerances 0.01% to 10% ( 1% Standard ) Temperature Coefficient >10W : 20ppm/K 1W to10W : 50ppm/K <1W : Call Factory Temperature Range -55C to +275C Dielectric Strength 1500 VAC Constuction Centerless ground ceramic core Tinned copper or copperweld leads High-temperature epoxy molding Compound Anodized aluminum housing All welded terminations Environmental Performance DR Dielectric 0.2% + 0.05W Load Life 1% + 0.05W Storage 0.2% + 0.05W Moisture Resistance 0.2% + 0.05W Thermal Shock 0.2% + 0.05W 5X Overload ( 5s ) 0.2% + 0.05W Shock 0.1% + 0.05W Vibration 0.1% + 0.05W (MIL-STD 202) Power Derating Curve 120 100 Mo un Power ( % ) 80 ted on He A 60 Free-air Derating A : UAL-5, UAL-10 B : UAL-25 C : UAL-50, UAL-100, UAL-250 D : UAL-300 ats ink B C 40 D 20 0 0 50 100 150 200 250 300 350 Ambient Temperature (C) www.powertron.de 2 For technical questions, contact: powertron@vishaypg.com Document Number: 64325 Revision: 20-09-10 USL Series Powertron Dimensions Type A B C D E F G H J K L M N O P Q R 0.005 [0.13] 0.005 [0.13] 0.031 [0.8] 0.062 [1.6] 0.015 [0.4] 0.015 [0.4] 0.015 [0.4] 0.010 [0.25] 0.010 [0.25] 0.010 [0.25] 0.005 [0.13] 0.015 [0.4] 0.005 [0.13] 0.062 [1.6] 0.031 [0.8] 0.002 [0.05] 0.031 [0.8] UAL-5 0.444 [11.3] 0.490 [12.4] 0.600 [15.2] 1.125 [28.5] 0.334 [8.5] 0.646 [16.4] 0.320 [8.1] 0.065 [1.7] 0.140 [3.6] 0.078 [2.0] 0.093 [2.4] 0.078 [2.0] 0.050 [1.3] 0.266 [6.8] 0.245 [6.2] 0.051 [1.30] 0.085 [2.2] UAL-10 0.562 [14.3] 0.625 [15.9] 0.750 [19.1] 1.375 [35.0] 0.430 [10.9] 0.800 [20.3] 0.400 [10.2] 0.075 [1.9] 0.190 [4.8] 0.093 [2.4] 0.093 [2.4] 0.102 [2.6] 0.086 [2.2] 0.312 [7.9] 0.312 [7.9] 0.081 [2.06] 0.140 [3.6] UAL-25 0.719 [18.3] 0.781 [19.8] 1.062 [27.0] 1.938 [49.2] 0.530 [13.5] 1.080 [27.4] 0.560 [14.2] 0.085 [2.2] 0.260 [6.6] 0.172 [4.4] 0.125 [3.2] 0.125 [3.2] 0.086 [2.2] 0.438 [11.1] 0.391 [9.9] 0.081 [2.06] 0.140 [3.6] UAL-50 1.563 [39.7] 0.844 [21.4] 1.968 [50.0] 2.781 [70.6] 0.615 [15.6] 1.140 [29.0] 0.615 [15.6] 0.085 [2.2] 0.300 [7.6] 0.196 [5.0] 0.125 [3.2] 0.125 [3.2] 0.086 [2.2] 0.438 [11.1] 0.422 [10.7] 0.081 [2.06] 0.140 [3.6] 0.005 [0.13] 0.005 [0.13] 0.005 [0.13] 0.031 [0.8] 0.062 [1.6] 0.015 [0.4] 0.015 [0.4] 0.015 [0.4] 0.010 [0.25] 0.015 [0.4] 0.015 [0.4] 0.005 [0.13] 0.015 [0.4] M N UAL100 2.750 [69.9] - 2.250 [57.2] 3.500 [88.9] 5.480 [139] 1.800 [45.7] 2.810 [71.4] 1.750 [44.5] 0.188 [4.8] 0.800 [20.3] 0.375 [9.5] 0.188 [4.8] 0.225 [5.7] 12-24 - (2) #8 UAL180 2.750 [69.9] - 2.500 [63.5] 3.500 [88.9] 5.480 [139] 2.100 [55.3] 3.000 [76.2] 2.190 [55.6] 0.250 [6.4] 0.950 [24.1] 0.375 [9.5] 0.188 [4.8] 0.200 [5.1] 12-24 - (2) #8 UAL250 3.875 [98.4] 3.000 [76.2] 1.062 [63.5] 4.500 [114] 7.000 [178] 2.100 [55.3] 3.00 [76.2] 2.190 [55.6] 0.250 [6.4] 1.000 [25.4] 0.312 [7.9] 0.188 [4.8] 0.200 [5.1] 1/4-20 1.188 [30.7] (4) #8 Type A Aa Document Number: 64325 Revision: 20-09-10 B C D E F G H J K For technical questions, contact: powertron@vishaypg.com L P 0.015 [0.4] Mtg. Screw www.powertron.de 3 UAL Series Powertron Dimensions (continued) A B C D E F G H J K L M N Type MAX MAX MAX MAX MAX 0.010 [0.3] 0.010 [0.3] MAX MAX MAX 0.010 [0.3] MAX 0.010 [0.3] UAL-300 2.854 [72.5] 7.260 [184.4] 1.646 [41.8] 1.791 [45.5] 5.028 [127.7] 4.094 [104.0] 2.323 [59.0] 0.807 [20.5] 0.488 [12.4] 0.217 [5.5] 0.260 [6.6] 5.567 [141.4] 2.047 [52.0] www.powertron.de 4 For technical questions, contact: powertron@vishaypg.com Document Number: 64325 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. Statements regarding the suitability of products for certain types of applications are based on Vishay Precision Group's knowledge of typical requirements that are often placed on Vishay Precision Group products. It is the customer's responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any conduct of Vishay Precision Group. The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any damages arising or resulting from such use or sale. 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