Accutrim™ 1240 (RJ26 Style) Bulk Metal® Foil Technology Ultra High Precision Trimming Potentiometers, 1/ " Square, RJ26 Style, Designed to Meet or Exceed The Requirements of 4 MIL-PRF-39035, Char. H with a Smooth and Unidirectional Output FEATURES  Temperature coefficient of resistance (TCR):  ± 10 ppm/°C. (- 55 °C to + 150 °C ref. at + 25 °C); through the wiper (3); ± 25 ppm/°C (see table 2 for low values)  A smooth and unidirectional resistance with leadscrew adjustment  Load life stability: 0.1 % typical R, 1.0 % maximum R under full rated power at + 85 °C for 10 000 h  Settability: 0.05 % typical; 0.1 % maximum INTRODUCTION  Setting stability: 0.1 % typical; 0.5 % maximum, DSS  Power rating: 0.25 W at + 85 °C Vishay Foil Resistors’ (VFR) precision trimmers have the Bulk Metal® Foil resistive element which possesses a unique  Resistance range: 5  to 10 k inherent temperature and load life stability. Plus, their  Tolerance: ± 5 %, ± 10 % advanced virtually back lash-free adjustment mechanism  Electrostatic discharge (ESD) at least to 25 kV makes them easy to set quickly and accurately and keeps  Terminal finish: gold plated (tin/lead finish is available on request) the setting exactly on target. e e e c c c n n n a a a sist BULK METAL sist sist Re FOIL Re WIREWOUND Re CERMET Wiper Travel Wiper Travel Wiper Travel TABLE 1 - MODEL SELECTION MODEL TERMINATION STYLE AVERAGE WEIGHT (g) POWER RATING at + 85 °C AMBIENT NO. OF TURNS W-edge mount, top adjust 1240 X-edge mount, side adjust 0.4 0.25 W 21 ± 2 P-horizontal mount, side adjust Note • See Figure 1, next page TABLE 2 - 1240 (RJ26) SERIES  TABLE 3 - VALUES VS. TOLERANCES ELECTRICAL SPECIFICATIONS STANDARD RESISTANCE VALUES STANDARD Temperature Coefficient of ± 10 ppm/°C maximum (in ) TOLERANCE Resistance (TCR) 50  to 10 k (- 55 °C to + 150 °C, End-to-end (2) + 25 °C ref.) 5, 10 ± 10 % Temperature Coefficient of  Resistance 5, 10 and 20  ± 20 ppm/°C Through the wiper (3) ± 25 ppm/°C 20, 50, 100, 200, 500, 1K, 2K, 5K, 10K ± 5 % Stability 0.1 % typical R Load life at 10 000 h 1.0 % maximum R End-to-end (2) (under full rated power of TABLE 4 - MECHANICAL SPECIFICATIONS 0.25 W at + 85 °C) Power Rating (4) 0.25 W at + 85 °C Adjustment Turns 21 ± 2 Settability 0.05 % typical; 0.1 % maximum Mechanical Stops Wiper idles - no discontinuity Setting Stability 0.1 % typical; 0.5 % maximum Internal All welded - no flux Contact Resistance 3  typical;  Terminations Variation - CRV (noise) (5) 10  maximum Hop-off 0.25 % typical; 1240X - diallyl-phthalate: green (DAP) 1.0 % maximum Case Material 1240W - diallyl-phthalate: green (DAP) 1240P - thermoplastic: black High-Frequency Operation  Rise time 1.0 ns without ringing Inductance 0.08 µH typical Shaft Torque 3 oz. in. maximum Capacitance 0.5 pF typical Operating Temperature Range - 55 °C to + 150 °C Backlash 0.005 % typical Document Number: 63053 For any questions, contact www.vishayfoilresistors.com Revision: 2-Mar-15 foil@vpgsensors.com 1

Accutrim™ 1240 (RJ26 Style) FIGURE 1 - SCHEMATIC AND DIMENSIONS in Inches (Millimeters) 1240X 1240W 0.050" (1.27 mm) C 0.040" (1.02 mm) C 0.040" (1.02 mm) C VFR 0.250" (6.35 mm) D 2 0.250" (6.35 mm) D VFR CW 1 3 3 1 CW 1 2 3 2 3 2 1 0.250" (6.35 mm) D 0.250" (6.35 mm) D 0.050" (1.27 mm) C 0.050" (1.27 mm) C 0.010" (0.25 mm) A 0.050" (1.27 mm) C 0.100" (2.54 mm) A 0.175" (4.45 mm) C 0.100" (2.54 mm) A 0.175" (4.45 mm) C 0.050" (1.27 mm) C 0.050" (1.27 mm) C 0.100" (2.54 mm) A 0.100" (2.54 mm) A 0.125" (3.18 mm) C 0.125" (3.18 mm) C (bottom view) (bottom view) 1240P    0.050" (1.27 mm) C   VFR   0.175" (4.45 mm) D CW TOLERANCES: STANDARD MARKING: 1 3 A = ± 0.005" (0.13 mm) Model No. C = ± 0.010" (0.25 mm) Date Code D = ± 0.020" (0.51 mm) Resistance Value 1 2 3 Tolerance 0.250" (6.35mm) D 0.016" 0.055" (1.40 mm) C 0.035" (0.89 mm) C NOTES: (0.41 mm) A Adjustment screw 0.080" (2.03 mm) diameter with  Resistance Value 0.100" (2.54 mm) A 0.025" (0.64 mm) X 0.030" (0.76 mm) slot. Tolerance on Tolerance 0.250" (6.35 mm) D screw dimensions is ± 0.005" (0.13 mm). Model 1240 0.125" (3.18 mm) C has gold plated terminal pins 0.016" (0.41 mm) ± 0.001" (0.03 mm) diameter, 0.200" (5.08 mm) length minimum. 0.100" (2.54 mm) A MDaotdee Cl Nodoe. FIGURE 2 - POWER DERATING CURVE FIGURE 3 -1240W 10 k LOAD LIFE, 20 UNITS, 10 000 h at 0.25 W, + 85 °C (Wiper at CW) + 2000 + 85 °C + 1500 er+ 100 w o + 1000 ed P + 75 m)+ 500 of Rat + 50 R (pp 0 ent + 25 ΔR/ - 500 c er - 1000 P 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 - 1500 Ambient Temperature °C - 2000 0 2000 4000 6000 8000 10 000 Time (h) www.vishayfoilresistors.com For any questions, contact Document Number: 63053 2 foil@vpgsensors.com Revision: 2-Mar-15

Accutrim™ 1240 (RJ26 Style) TABLE 5 - COMPARISON MIL-PRF-39035/3 CHARACTERISTIC H MODEL 1240 MAXIMUM(6) TEST GROUP I Conditioning ± 1.0 % ± 0.5 % Contact resistance variation - CRV (noise) ± 3.0 % or 3  (7) 3 typical, 10 maximum Immersion No continuous stream of bubbles No continuous stream of bubbles TEST GROUP I a Visual and mechanical No failures No failures Actual effective electrical travel 10 to 25 turns 21 ± 2 turns End resistance 2 % or 2 (7) 2 for values  1 k;  5 for values  2 k; Dielectric withstanding voltage - DWV Per MIL-STD-202, methods 301 and 105 Atmospheric pressure 600 VAC, 1 min 600 VAC, 1 min Barometric pressure 250 VAC, 1 min 250 VAC, 1 min Insulation resistance  1000 M > 1000 M Shaft torque 3 oz. in. maximum 3 oz. in. maximum Thermal shock ± 1.0 % ± 0.5 % Setting stability ± 1.0 % ± 0.5 % TEST GROUP II Solderability Per MIL-STD-202, method 208 Per MIL-STD-202, method 208 TEST GROUP III Resistance temperature characteristic - TCR ± 0.005 %/°C (± 50 ppm/°C) ± 0.001 %/°C (± 10 ppm/°C) Moisture resistance ± 1.0 % ± 0.5 % Contact resistance variation - CRV (noise) 3.0 % or 3  (7) 3 typical, 10 maximum TEST GROUP IV Settability ± 1.0 % ± 0.1 % Shock ± 1.0 % ± 0.5 % Setting stability ± 1.0 % ± 0.5 % Vibration ± 1.0 % ± 0.5 % Setting stability ± 1.0 % ± 0.5 % Contact resistance variation - CRV (noise) 3.0 % or 3 (7) 3 typical, 10 maximum Salt spray No corrosion No corrosion TEST GROUP V Solder heat ± 1.0 % ± 0.1 % Low-temperature operation ± 1.0 % ± 0.5 % Setting stability ± 2.0 % ± 0.5 % Low-temperature storage ± 1.0 % ± 0.5 % High-temperature exposure ± 3.0 % ± 0.5 % Setting stability ± 2.0 % ± 0.5 % Contact resistance variation - CRV (noise) 3 % or 3 (7) 3 typical, 10  maximum Integrity of shaft No loosening or breakage No loosening or breakage TEST GROUP VI Rotational life (200 cycles) ± 2.0 % ± 2.0 % Contact resistance variation - CRV (noise) 3 % or 3  (7) 3 typical, 10 maximum Terminal strength 2 lbs. 2 lbs. TEST GROUP VII Life (2000 h) at + 85 °C ± 3.0 % ± 0.1 % typical, ± 1.0 % maximum Life (10 000 h) at + 85 °C ± 5.0 % ± 0.1 % typical, ± 1.0 % maximum TEST GROUP VIII Solvent resistance No failures No failures Notes VFR TRIMMERS ARE INSPECTED (1) Maximum is 1.0 % A.Q.L. standard for all specifications except TCR. (For TCR information, see notes 2 and 3.) 100 % for: (2) Maximum TCR applies to the 3  (sigma) limit or 99.73 % of a • Immersion production lot. (Measured end-to-end with wiper off the element.) • Resistance tolerance check (3) Measurements of TCR through the wiper are influenced more by • End resistance setting stability and the percentage of the total resistance in use (at the wiper) than by fundamental resistance change due to • Visual-mechanical temperature alone. The parameter shown in table 2 is a 2 s • Dynamic tests for continuity, CRV distribution typifying the behavior of the device when used with 40 % or more of the total resistance in use. By sample for: (4) Derated linearly for full power at + 85 °C to zero power at • TCR + 150 °C. See Figure 2 on previous page. • DWV (5) Independent of resistance value. 3  maximum available on  special request. (6) All R’s are measured to the tolerance specified + 0.01 . (7) Whichever is greater. Special Available Options: Special marking Burn-in and screening operations. Document Number: 63053 For any questions, contact www.vishayfoilresistors.com Revision: 2-Mar-15 foil@vpgsensors.com 3

Accutrim™ 1240 (RJ26 Style) TABLE 6 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y4053500R000J0L (preferred part number format) DENOTES PRECISION VALUE CHARACTERISTICS (1) Y R =  0 = gold plated termination (lead (Pb)-free) K = k 1 to 999 = custom Y 4 0 5 3 5 0 0 R 0 0 0 J 0 L PRODUCT CODE TOLERANCE PACKAGING 4053 = 1240W J = ± 5 % L = foam/box pack 5053 = 1240X K= ± 10 % 0053 = 1240P FOR EXAMPLE: ABOVE GLOBAL ORDER Y4053 500R000 J 0 L: TYPE: 1240W VALUE: 500.0  ABSOLUTE TOLERANCE: ± 5.0 % TERMINATION: gold plated termination (lead (Pb)-free) PACKAGING: foam/box pack HISTORICAL PART NUMBER: 1240W 500R00 J B (will continue to be used) 1240W 500R00 J B MODEL RESISTANCE VALUE TOLERANCE PACKAGING 1240W 500R00 = 500.0  J = ± 5 % B = foam/box pack 1240X K= ± 10 % 1240P Note (1) For non-standard requests, please contact application engineering. www.vishayfoilresistors.com For any questions, contact Document Number: 63053 4 foil@vpgsensors.com Revision: 2-Mar-15

LLeeggaall DDiissccllaaiimmeerr NNoottiiccee Vishay Precision Group, Inc. DDiissccllaaiimmeerr 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, “VPG”), 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 VPG’s terms and conditions of purchase, including but not limited to, the warranty expressed therein. VPG 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, VPG 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 VPG’s knowledge of typical requirements that are often placed on VPG 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. You should ensure you have the current version of the relevant information by contacting VPG prior to performing installation or use of the product, such as on our website at vpgsensors.com. No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any conduct of VPG. The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise expressly indicated. Customers using or selling VPG products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify VPG for any damages arising or resulting from such use or sale. Please contact authorized VPG 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. Copyright Vishay Precision Group, Inc., 2014. All rights reserved. Document No.: 63999 www.vpgsensors.com Revision: 15-Jul-2014 1