1240 Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers, 1/4 Inch Square, RJ26 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. H FEATURES • Temperature coefficient of resistance (TCR): ± 10 ppm/°C. (- 55 °C to + 150 °C ref. at + 25 °C); through the wiper3); ± 25 ppm/°C (see table 2 for low values) RoHS COMPLIANT • Load life stability: 0.1 % typical ΔR, 1.0 % maximum ΔR under full rated power at + 85 °C for 10 000 h • Settability: 0.05 % typical; 0.1 % maximum • Setting stability: 0.1 % typical; 0.5 % maximum, ΔSS • Power rating: 0.25 W at + 85 °C • Resistance range: 5 Ω to 10 kΩ TABLE 1 - MODEL SELECTION* MODEL TERMINATION STYLE AVERAGE WEIGHT (g) POWER RATING at + 85 °C AMBIENT NO. OF TURNS 0.4 0.25 W 21 ± 2 W-edge mount, top adjust 1240 X-edge mount, side adjust P-horizontal mount, side adjust Note: * See Figure 1, next page TABLE 2 - 1240 (RJ26) SERIES ELECTRICAL SPECIFICATIONS Temperature Coefficient of Resistance (TCR) 50 Ω to 10K End-to-end2) ± 10 ppm/°C maximum (- 55 °C to + 150 °C, + 25 °C ref.) Temperature Coefficient of Resistance 5, 10 and 20 Ω ± 20 ppm/°C Through the wiper3) TABLE 3 - VALUES VS. TOLERANCES STANDARD RESISTANCE VALUES (in Ω) STANDARD TOLERANCE 5, 10 ± 10 % 20, 50, 100, 200, 500, 1K, 2K, 5K, 10K ±5% ± 25 ppm/°C Stability Load life at 10 000 h 0.1 % typical ΔR 1.0 % maximum ΔR (under full rated power of 0.25 W at + 85 °C) Power Rating4) 0.25 W at + 85 °C Settability 0.05 % typical; 0.1 % maximum Setting Stability 0.1 % typical; 0.5 % maximum Contact Resistance Variation - CRV (noise)5) 3 Ω typical; 10 Ω maximum Hop-off 0.25 % typical; 1.0 % maximum Case Material High-Frequency Operation Rise time Inductance Capacitance 1.0 ns without ringing 0.08 µH typical 0.5 pF typical Shaft Torque 3 oz. in. maximum Operating Temperature Range - 55 °C to + 150 °C Backlash 0.005 % typical Document Number: 63053 Revision: 17-Jun-08 TABLE 4 - MECHANICAL SPECIFICATIONS Adjustment Turns 21 ± 2 Mechanical Stops Wiper idles - no discontinuity Internal Terminations All welded - no flux 1240X - diallyl-phthalate: green (DAP) 1240W - diallyl-phthalate: green (DAP) 1240P - thermoplastic: black For any questions, contact: [email protected] www.vishay.com 1 1240 Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers, 1/4 Inch Square, RJ26 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. H 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 VISHAY 2 0.250" (6.35 mm) D 0.250" (6.35 mm) D VISHAY 1 CW 3 3 1 CW 1 2 2 3 0.250" (6.35 mm) D 3 2 1 0.250" (6.35 mm) D 0.050" (1.27 mm) C 0.100" (2.54 mm) A 0.050" (1.27 mm) C 0.010" (0.25 mm) A 0.050" (1.27 mm) C 0.175" (4.45 mm) C 0.100" (2.54 mm) A 0.175" (4.45 mm) C 0.050" (1.27 mm) C 0.100" (2.54 mm) A 0.050" (1.27 mm) C 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 VISHAY 0.175" (4.45 mm) C CW 1 1 2 3 TOLERANCES: STANDARD MARKING: A = ± 0.005" (0.13 mm) Model No. C = ± 0.010" (0.25 mm) Date Code D = ± 0.020" (0.51 mm) Resistance Value 3 Tolerance 0.250" (6.35mm) D 0.055" (1.40 mm) C 0.035" (0.89 mm) C 0.016" (0.41 mm) A Notes: Adjustment screw 0.080" (2.03 mm) diameter with Resistance Value Tolerance 0.025" (0.64 mm) X 0.030" (0.76 mm) slot. Tolerance on 0.100" (2.54 mm) A 0.250" (6.35 mm) D 0.125" (3.18 mm) C screw dimensions is ± 0.005" (0.13 mm). Model 1240 has gold plated terminal pins 0.016" (0.41 mm) ± 0.001" Model No. Date Code 0.100" (2.54 mm) A FIGURE 2 - POWER DERATING CURVE (0.03 mm) diameter, 0.200" (5.08 mm) length minimum. FIGURE 3 - 1240W 10 kΩ LOAD LIFE, 20 UNITS, 10 000 h at 0.25 W, + 85 °C (wiper at CW) + 2000 + 1000 ΔR/R (ppm) Percent of Rated Power + 1500 + 85 °C + 100 + 75 + 50 + 25 + 500 0 - 500 0 - 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 Ambient Temperature °C - 1000 - 1500 - 2000 0 2000 4000 6000 8000 10 000 Time (h) www.vishay.com 2 For any questions, contact: [email protected] Document Number: 63053 Revision: 17-Jun-08 1240 Bulk Metal® Foil Technology Precision Trimming Vishay Foil Resistors Potentiometers, 1/4 Inch Square, RJ26 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. H TABLE 5 - COMPARISON MIL-PRF-39035/3 CHARACTERISTIC H6) MODEL 1240 MAXIMUM ± 1.0 % ± 3.0 % or 3 Ω7) No continuous stream of bubbles ± 0.5 % 3 Ω typical, 10 Ω maximum No continuous stream of bubbles No failures 10 to 25 turns 2 % or 2 Ω7) Per MIL-STD-202, methods 301 and 105 No failures 21 ± 2 turns 2 Ω for values ≤ 1 kΩ; 5 Ω for values ≥ 2 kΩ; Per MIL-STD-202, methods 301 and 105 ≥ 1000 MΩ 3 oz. in. maximum ± 1.0 % ± 1.0 % > 1000 MΩ 3 oz. in. maximum ± 0.5 % ± 0.5 % Per MIL-STD-202, method 208 Per MIL-STD-202, method 208 ± 0.005 % (± 50 ppm/°C) ± 1.0 % 3.0 % or 3 Ω7) ± 0.001 % (± 10 ppm/°C) ± 0.5 % 3 Ω typical, 10 Ω maximum TEST GROUP IV Settability Shock Setting stability Vibration Setting stability Contact resistance variation - CRV (noise) Salt spray ± 1.0 % ± 1.0 % ± 1.0 % ± 1.0 % ± 1.0 % 3.0 % or 3 Ω7) No corrosion ± 0.1 % ± 0.5 % ± 0.5 % ± 0.5 % ± 0.5 % 3 Ω typical, 10 Ω maximum No corrosion TEST GROUP V Solder heat Low-temperature operation Setting stability Low-temperature storage High-temperature exposure Setting stability Contact resistance variation - CRV (noise) Integrity of shaft ± 1.0 % ± 1.0 % ± 2.0 % ± 1.0 % ± 3.0 % ± 2.0 % 3 % or 3 Ω7) No loosening or breakage ± 0.1 % ± 0.5 % ± 0.5 % ± 0.5 % ± 0.5 % ± 0.5 % 3 Ω typical, 10 Ω maximum No loosening or breakage TEST GROUP VI Rotational life (200 cycles) Contact resistance variation - CRV (noise) Terminal strength ± 2.0 % 3 % or 3 Ω7) 2 lbs. ± 2.0 % 3 Ω typical, 10 Ω maximum 2 lbs. ± 3.0 % ± 5.0 % ± 0.1 % typical, ± 1.0 % maximum ± 0.1 % typical, ± 1.0 % maximum No failures No failures TEST GROUP I Conditioning Contact resistance variation - CRV (noise) Immersion TEST GROUP I a Visual and mechanical Actual effective electrical travel End resistance Dielectric withstanding voltage - DWV (atmospheric and barometric pressure) Insulation resistance Shaft torque Thermal shock Setting stability TEST GROUP II Solderability TEST GROUP III Resistance temperature characteristic - TCR Moisture resistance Contact resistance variation - CRV (noise) TEST GROUP VII Life (2000 h) at + 85 °C Life (10 000 h) at + 85 °C TEST GROUP VIII Solvent resistance Notes: VISHAY 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: • Short-time overload (6.25 x rated power for 5 s on; and for 30 s off - 3 cycles) • Immersion • Resistance tolerance check • End resistance • Visual-mechanical • Dynamic tests for continuity, CRV 2. Maximum TCR applies to the 3 σ (sigma) limit or 99.73 % of a production lot. (Measured end-to-end with wiper off the element.) 3. Measurements of TCR through the wiper are influenced more by setting stability and the percentage of the total resistance in use (at the wiper) than by fundamental resistance change due to temperature alone. The parameter shown in Table 2 is a 2 s distribution typifying the behavior of the device when used with 40 % or more of the total resistance in use. 4. Derated linearly for full power at + 85 °C to zero (0) W at + 150 °C. See Figure 2 on previous page. 5. Independent of resistance value. 3 W maximum available on special request. By sample for: • TCR • DWV 6. All ΔR’s are measured to the tolerance specified + 0.01 Ω. 7. Whichever is greater. Special Available Options: Special marking Burn-in and screening operations. Document Number: 63053 Revision: 17-Jun-08 For any questions, contact: [email protected] www.vishay.com 3 1240 Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers, 1/4 Inch Square, RJ26 Style, Designed to Meet or Exceed the Requirements of MIL-PRF-39035, Char. H TABLE 6 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y4053500R000J0L (preferred part number format) DENOTES PRECISION VALUE AER* Y R=Ω K = kΩ 0 = standard part, gold termination 1 - 999 = custom Y 4 0 5 3 5 0 0 R 0 0 0 J 0 L PRODUCT CODE TOLERANCE PACKAGING 4053 = 1240W 5053 = 1240X 0053 = 1240P J =±5% K = ± 10 % L = bulk pack FOR EXAMPLE: ABOVE GLOBAL ORDER Y4053 500R000 J 0 L: TYPE: 1240W VALUE: 500.0 Ω ABSOLUTE TOLERANCE: ± 5.0 % AER: standard part, gold termination PACKAGING: bulk pack HISTORICAL PART NUMBER: 1240W 500R00 J B (will continue to be used) 1240W 500R00 J B MODEL RESISTANCE VALUE TOLERANCE 1240W 1240X 1240P 500R00 = 500.0 Ω J =±5% K = ± 10 % PACKAGING B = bulk pack Note * Application engineering release: for non-standard requests, please contact application engineering. www.vishay.com 4 For any questions, contact: [email protected] Document Number: 63053 Revision: 17-Jun-08 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