1280G, 1285G Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers 3/4" Rectilinear, ± 5 ppm/°C and ± 15 ppm/°C TCR 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 RoHS COMPLIANT • Load life stability: 0.5 % maximum ΔR under full rated power at + 25 °C for 2000 h • Electrostatic discharge: above 25 000 V TABLE 1 - 1280G AND 1285G SERIES ELECTRICAL SPECIFICATIONS • Setting stability: 0.1 % typical; 0.5 % maximum, ΔSS Resistance Tolerance Model 1280G 10 %1) Model 1285G 5 % Resistance Range 10 Ω to 20 kΩ • Resistance range: 10 Ω to 20 kΩ TCR Model 1280G ± 15 ppm/°C (- 55 °C to + 25 °C) ± 15 ppm/°C (+ 25 °C to + 125 °C) • Resistance tolerance: ± 10 %, ± 5 % TCR Model 1285G3) ± 5 ppm/°C (- 55 °C to + 25 °C) ± 5 ppm/°C (+ 25 °C to + 125 °C) Power 0.75 W at + 25 °C derated linearly to 0 W at + 125 °C (see Fig. 2) • “O”-ring prevents ingress of fluids during any board cleaning operation Settability 0.05 % typical; 0.1 % maximum • Termination: gold plated Setting Stability 0.1 % typical; 0.5 % maximum, ΔSS Roll-on, Roll-off 0.25 % typical; 1.0 % maximum Load Life Stability 0.5 % ΔR after 2000 h under full rated power at + 25 °C Adjustment Turns 26 ± 2 turns End Resistance 2 Ω maximum Backlash < 0.05 % C.R.V.2) 3 Ω typical; 10 Ω maximum Stops clutch, wiper idles Frequency Characteristics 10 ns rise time at 1 kΩ to 100 MHz Sealed + 85 °C water immersion Torque 5 oz. in. maximum Weight 1.5 grams maximum Construction Case Material Lead Screw Wiper Rider Block Element Lead Material Valox® Brass Precious metal brush Nylon Bulk Metal® Foil Gold plated phosphor bronze • Power rating: 0.75 W at + 25 °C Notes 1. 2. 3. 4. • Settability: 0.05 % typical; 0.1 % maximum 5 % available on special order The 1280G can be screened for low noise, if required For model 1285G 10 Ω and 20 Ω TCR is ± 10 ppm/°C Panel mount available on special order TABLE 2 - STANDARD VALUE 10 Ω, 20 Ω, 50 Ω, 100 Ω, 200 Ω, 500 Ω 1K, 2K, 5K, 10K, 20K Document Number: 63056 Revision: 07-Nov-07 • Backlash: < 0.05 % • Tap test: 0.05 % typical; 0.1 % maximum TABLE 3 - 1280G AND 1285G SERIES MECHANICAL SPECIFICATIONS For any questions, contact: [email protected] www.vishay.com 1 1280G, 1285G Bulk Metal® Foil Technology Precision Trimming Potentiometers 3/4" Rectilinear, ± 5 ppm/°C and ± 15 ppm/°C TCR Vishay Foil Resistors FIGURE 1 - 1280G/1285G SCHEMATIC AND DIMENSIONS in inches (millimeters) 0.060" (1.52 mm) A 0.750" (19.05 mm) C 0.190" (4.83 mm) B 0.110" (2.79 mm) A 0.190" (4.83 mm) B 0.010" (0.25 mm) A 1 2 0.030" (0.76 mm) A 0.270" (6.86 mm) B 3 0.200" (5.08 mm) B 0.050" (1.27 mm) A 0.039" (0.99 mm) A 0.010" (0.25 mm) A 0.200" (5.08 mm) A 0.020" (0.51 mm) A 0.500" (12.70 mm) A 0.100" (2.54 mm) B 0.125" (3.18 mm) B 1 3 CW 2 0.030" (0.76 mm) A TOLERANCES A = ± 0.005" (0.13 mm) B = ± 0.010" (0.25 mm) C = ± 0.015" (0.38 mm) FIGURE 2 - POWER DERATING CURVE Percent of Rated Power - 55 °C + 25 °C + 100 + 75 + 50 + 25 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 Ambient Temperature (°C) www.vishay.com 2 For any questions, contact: [email protected] Document Number: 63056 Revision: 07-Nov-07 1280G, 1285G Bulk Metal® Foil Technology Precision Trimming Potentiometers 3/4" Rectilinear, ± 5 ppm/°C and ± 15 ppm/°C TCR Vishay Foil Resistors TABLE 4 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y0056100R000K0L (preferred part number format) DENOTES PRECISION VALUE Y R=Ω K = kΩ Y 0 0 5 6 1 0 0 AER* 0 = standard 1 - 999 = custom R 0 0 0 K 0 PRODUCT CODE RESISTANCE TOLERANCE PACKAGING 0056 = 1280G 0059 = 1285G J = ± 5.0 % K = ± 10.0 % L = bulk pack L FOR EXAMPLE: ABOVE GLOBAL ORDER Y0056 100R000 K 0 L: TYPE: 1280G VALUES: 100.0 Ω ABSOLUTE TOLERANCE: ± 10 % TERMINATION: gold plated PACKAGING: bulk pack HISTORICAL PART NUMBER: 1280G 100R K (will continue to be used) 1280G 100R K MODEL VALUE TOLERANCE 1280G 1285G 100R = 100 Ω J = ± 5.0 % K = ± 10.0 % Note * For non-standard requests or additional values, please contact application engineering. Document Number: 63056 Revision: 07-Nov-07 For any questions, contact: [email protected] www.vishay.com 3 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay 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 Number: 91000 Revision: 18-Jul-08 www.vishay.com 1