1280G_10

Accutrim™ 1280G, 1285G Vishay Foil Resistors Bulk Metal® Foil Technology Ultra High Precision Trimming Potentiometers 3/4" Rectilinear, ± 5 ppm/°C and ± 15 ppm/°C TCR with a Smooth and Unidirectional Output FEATURES • Temperature coefficient of resistance (TCR): (- 55 °C to + 125 °C ref. at + 25 °C) - ± 15 ppm/°C (model 1280G); - ± 5 ppm/°C (model 1285G)3); - through the wiper ± 50 ppm/°C INTRODUCTION Vishay Foil precision trimmers have the Bulk Metal® Foil resistive element which possesses a unique inherent temperature and load life stability. Plus, their advanced virtually back lash-free adjustment mechanism makes them easy to set quickly and accurately and keeps the setting exactly on target. Resistance • A smooth and unidirectional resistance with leadscrew adjustment • Load life stability: 0.5 % maximum ΔR under full rated power at + 25 °C for 2000 h • Electrostatic discharge (ESD) up to 25 000 V • Settability: 0.05 % typical; 0.1 % maximum • Setting stability: 0.1 % typical; 0.5 % maximum, ΔSS • Power rating: 0.75 W at + 25 °C • Resistance range: 10 Ω to 20 kΩ Resistance BULK METAL FOIL WIREWOUND • Resistance tolerance: ± 10 %, ± 5 % • Backlash: < 0.05 % • Tap test: 0.05 % typical; 0.1 % maximum • “O”-ring prevents ingress of fluids during any board cleaning operation Wiper Travel Wiper Travel Resistance • Terminal finish: gold plated (tin/lead finish available on request) CERMET Wiper Travel TABLE 1 - 1280G AND 1285G SERIES ELECTRICAL SPECIFICATIONS Resistance Tolerance Resistance Range TCR Model 1280G TCR Model 1285G (3) Power Settability Setting Stability Roll-on, Roll-off Load Life Stability End Resistance C.R.V. (noise) (2) Frequency Characteristics Notes (1) 5 % available on special order (2) The 1280G can be screened for low noise, if required (3) For model 1285G 10 Ω and 20 Ω TCR is ± 10 ppm/°C (4) Panel mount available on special order Model 1280G 10 % (1), Model 1285G 5 % 10 Ω to 20 kΩ ± 15 ppm/°C (- 55 °C to + 125 °C, ref. + 25 °C) ± 5 ppm/°C (- 55 °C to + 125 °C, ref. + 25 °C) 0.75 W at + 25 °C derated linearly to 0 W at + 125 °C (see Fig. 2) 0.05 % typical; 0.1 % maximum 0.1 % typical; 0.5 % maximum 0.25 % typical; 1.0 % maximum 0.5 % ΔR after 2000 h under full rated power at + 25 °C 2 Ω maximum 3 Ω typical; 10 Ω maximum 10 ns rise time at 1 kΩ to 100 MHz TABLE 2 - STANDARD VALUE 10 Ω, 20 Ω, 50 Ω, 100 Ω, 200 Ω, 500 Ω, 1 kΩ, 2 kΩ, 5 kΩ, 10 kΩ, 20 kΩ Document Number: 63056 Revision: 25-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 1 Accutrim™ 1280G, 1285G Vishay Foil Resistors TABLE 3 - 1280G AND 1285G SERIES MECHANICAL SPECIFICATIONS Adjustment Turns Backlash Stops Sealed Torque Weight Construction Case Material Lead Screw Wiper Rider Block Element Lead Material 26 ± 2 turns < 0.05 % clutch, wiper idles + 85 °C water immersion 5 oz. in. maximum 1.5 grams maximum Valox® Brass Precious metal brush Nylon Bulk Metal® Foil Gold plated phosphor bronze FIGURE 1 - 1280G/1285G SCHEMATIC AND DIMENSIONS in Inches (Millimeters) 0.750" (19.05 mm) C 0.060" (1.52 mm) A 0.190" (4.83 mm) B 0.110" (2.79 mm) A 0.190" (4.83 mm) B 0.270" (6.86 mm) B 0.030" (0.76 mm) A 0.010" (0.25 mm) A 0.050" (1.27 mm) A 0.039" (0.99 mm) A 0.020" (0.51 mm) A 1 2 3 0.200" (5.08 mm) B 0.010" (0.25 mm) A 0.200" (5.08 mm) A 0.500" (12.70 mm) A 0.125" (3.18 mm) B 0.100" (2.54 mm) B 1 CW 2 0.030" (0.76 mm) A 3 TOLERANCES: A = ± 0.005" (0.13 mm) B = ± 0.010" (0.25 mm) C = ± 0.015" (0.38 mm) FIGURE 2 - POWER DERATING CURVE - 55 °C + 25 °C Percent of Rated Power + 100 + 75 + 50 + 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 Ambient Temperature (°C) www.foilresistors.com 2 For any questions, contact: foil@vishaypg.com Document Number: 63056 Revision: 25-Mar-10 Accutrim™ 1280G, 1285G Vishay Foil Resistors TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y0056100R000K0L (preferred part number format) DENOTES PRECISION Y VALUE R=Ω K = kΩ CHARACTERISTICS (1) 0 = gold plated termination (lead (Pb)-free) 1 to 999 = custom Y 0 0 5 6 1 0 0 R 0 0 0 K 0 L PRODUCT CODE 0056 = 1280G 0059 = 1285G RESISTANCE TOLERANCE J = ± 5.0 % K = ± 10.0 % PACKAGING L = foam/box pack FOR EXAMPLE: ABOVE GLOBAL ORDER Y0056 100R000 K 0 L: TYPE: 1280G VALUES: 100.0 Ω ABSOLUTE TOLERANCE: ± 10 % TERMINATION: gold plated (lead (Pb)-free) PACKAGING: foam/box pack HISTORICAL PART NUMBER: 1280G 100R K (will continue to be used) 1280G MODEL 1280G 1285G 100R VALUE 100R = 100 Ω K TOLERANCE J = ± 5.0 % K = ± 10.0 % Note (1) For non-standard requests or additional values, please contact application engineering. Document Number: 63056 Revision: 25-Mar-10 For any questions, contact: foil@vishaypg.com www.foilresistors.com 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. 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