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| 1260 Vishay Foil Resistors Bulk Metal(R) Foil Technology Precision Trimming Potentiometers, 3/8 Inch Square, RJ24 Style, Designed to Meet or Exceed The Requirements of Mil-PRF-39035, Char. H FEATURES * Temperature Coefficient of Resistance (TCR): 10ppm/C. (- 55C to + 150C Ref. @ + 25C); Through the wiper3; 25ppm/C (see table 2 for low values) * Load Life Stability: 0.1% Typical R, 1.0% Maximum R under Full Rated Power @ + 85C for 10,000 hours * Settability: 0.05% Typical; 0.1% Maximum * Setting Stability: 0.1% Typical; 0.5% Maximum, SS * Power Rating: 0.25 watts @ + 85C * Resistance Range: 5 to 10K * Resistance Tolerance: 5%, 10% Product may not be to scale TABLE 1 - MODEL SELECTION* MODEL 1260 TERMINATION STYLE W-Edge Mount, Top Adjust 0.4 X-Edge Mount, Side Adjust *See Figure 1, next page.. 20, 50, 100, 200, 500, 1K, 2K, 5K, 10K 5% AVERAGE WEIGHT (g) STANDARD RESISTANCE VALUES (in ) 5, 10 STANDARD TOLERANCE 10% 0.25 W POWER RATING @ NO. OF +85C AMBIENT TURNS 21 2 TABLE 2 - 1260 (RJ24) SERIES ELECTRICAL SPECIFICATIONS1 Temperature Coefficient of Resistance (TCR) 50 to 10K End-to-End2 Temperature Coefficient of Resistance 5, 10 and 20 Through the Wiper 3 TABLE 3 MECHANICAL SPECIFICATIONS Adjustment Turns Mechanical Stops Internal Terminations Case Material Shaft Torque Backlash 21 2 10ppm/C Maximum (- 55C to + 25C) 10ppm/C Maximum (+ 25C to + 150C) 20ppm/C 25ppm/C 0.1% Typical R 1.0 % Maximum R (Under Full Rated Power of 0.25 watts @ + 85C) 0.25 watts @ + 85C 0.05% Typical; 0.1% Maximum 0.1% Typical; 0.5% Maximum SS 3 Typical 10 Maximum 0.25% Typical; 1.0% Maximum To 100MHz 10ns @ 1K 0.08H Typical 0.5pF Typical - 55C to + 150C TRIMMERS Wiper Idles - No Discontinuity All Welded - No Flux Diallyl-Phthalate: Black (DAP) 3 oz. in. Maximum 0.005% Typical Stability Load Life @ 10,000 Hours Power Rating4 Settability Setting Stability Contact Resistance Variation - CRV (noise)5 Hop-off High-Frequency Operation Rise/Decay Time Inductance Capacitance Operating Temperature Range TABLE 4 - ORDERING INFORMATION - 1260 SERIES PARTS Please specify Vishay Model 1260 Precision Trimming Potentiometers as follows: Example: 1260 W 100R RESISTANCE 5% TOLERANCE VALUE MODEL NO. TERMINATION STYLE See Table 1 for details. See Figure 1, next page for Standard Marking designation. * ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081 Refer to last page in this data sheet for footnotes. VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 Document Number: 63054 Revision 05-Aug-02 www.vishay.com 149 1260 Vishay Foil Resistors Bulk Metal(R) Foil Technology Precision Trimming Potentiometers FIGURE 1 - SCHEMATIC AND DIMENSIONS in inches (millimeters) 1260W 0.081 0.010" (2.08 0.25mm) MAXIMUM 0.080" (2.03mm) MAX VISHAY 0.420" (10.67mm) MAXIMUM MAX 0.015" (0.38mm) MIN MINIMUM CW 0.300" (7.62mm) MINIMUM MIN 3 1 2 3 PINS 0.024 0.006" (0.61 0.15mm) DIA DIAMETER 0.090 0.005" (2.29 0.13mm) DIA 0.010" (0.25mm) C 0.100 0.005" (2.54 0.13mm) 0.187 0.020" (4.75 0.51mm) 0.080" (2.03mm) MAXIMUM MAX 0.170 0.025" (4.32 0.64mm) 0.075 0.010" (1.91 0.25mm) STANDARD MARKING Model No. Date Code Resistance Value Tolerance 0.375 0.015" (9.53 0.38mm) 1260X 0.081 0.010" (2.08 0.25mm) 0.420" (10.67mm) MAX MAXIMUM VISHAY 2 CW NOTES Adjustment screw 0.090 Inches (2.30mm) diameter with 0.020 Inches (0.51mm) x 0.031 Inches (0.80mm) slot. Model 1268 has solder plated copper terminal pins. 0.024 inches (0.61mm) diameter, 0.300 Inches (7.62mm) length minimum. 3 TRIMMERS 0.015" (0.38mm) MIN MINIMUM 0.300" (7.62mm) MINIMUM MIN 1 3 PINS 0.024 0.006" (0.61 0.15mm) DIAMETER DIA 0.010" (0.25mm) C 0.100 0.005" (2.54 0.13mm) 0.187 0.020" (4.75 0.51mm) 0.170 0.025" (4.32 0.64mm) 0.075 0.010" (1.91 0.25mm) 0.090 0.005" (2.29 0.13mm) DIA 0.375 0.015" (9.53 0.38mm) FIGURE 2 - POWER DERATING CURVE Percent of Rated Power +100 +75 +50 +25 0 -75 -50 -25 0 +25 +50 +75 +100 +125 +150 +175 +85C Ambient Temperature C VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 * ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081 www.vishay.com 150 Document Number: 63054 Revision 05-Aug-02 1260 Bulk Metal Foil Technology Precision Trimming Potentiometers TABLE 5 - COMPARISON MIL-PRF-39035/3 CHARACTERISTIC H6 TEST GROUP I Conditioning Contact Resistance Variation - CRV (noise) Immersion TEST GROUP Ia 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 IV Settability Shock Setting Stability Vibration Setting Stability Contact Resistance Variation - CRV (noise) Salt Spray 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 TEST GROUP VI Rotational Life (200 Cycles) Contact Resistance Variation - CRV (noise) Terminal Strength TEST GROUP VII Life (2,000 Hours) @ + 85C Life (10,000 Hours) @ + 85C TEST GROUP VIII Solvent Resistance VISHAY TRIMMERS ARE INSPECTED 100% For: * Short-time overload (6.25 x rated power for 5 seconds on; and for 30 seconds off - 3 cycles) * Immersion * Resistance tolerance check * End Resistance * Visual-Mechanical * Dynamic tests for Continuity, CRV By Sample For: * TCR * DWV 1.0 % 3.0% or 3 7 No continuous stream of bubbles No Failures 10 to 25 turns 2% or 2 7 Per MIL-Std-202, Methods 301 and 105 1000 Megohms 3oz. in. Maximum 1.0% 1.0% Per MIL-Std-202, Method 208 0.005% ( 50ppm/C) 1.0% 3.0% or 37 1.0% 1.0% 1.0% 1.0% 1.0% 3.0% or 3 7 No Corrosion 1.0% 1.0% 2.0% 1.0% 3.0% 2.0% 3.0% or 3 7 No Loosening or Breakage 2.0% 3.0% or 3 7 2lbs. 3.0% 5.0% No Failures 1260 MAXIMUM (Worst Case) 0.5 % 3 Typical, 10 Maximum No continuous stream of bubbles No Failures 21 2 Turns 2 for Values 1K; 5 for Values 2K; Per MIL-Std-202, Methods 301 and 105 > 1000 Megohms 3oz. in. Maximum 0.5% 0.5% Per MIL-Std-202, Method 208 0.001% ( 10ppm/C) 0.5% 3 Typical, 10 Maximum 0.1% 0.5% 0.5% 0.5% 0.5% 3 Typical, 10 Maximum No Corrosion 0.1% 0.5% 0.5% 0.5% 0.5% 0.5% 3 Typical, 10 Maximum No Loosening or Breakage 2.0% 3 Typical, 10 Maximum 2lbs. 0.1% Typical, 1.0% Maximum 0.1% Typical, 1.0% Maximum No Failures (R) Vishay Foil Resistors TRIMMERS NOTES: 1. Maximum is 1.0% A.Q.L. standard for all specifications except TCR. (For TCR information, see notes 2 and 3.) "Typical" is a designers reference which represents that 85% of the lots supplied, over a long period of time, will be at least the figure stated or better. 2. Maximum TCR applies to the 3 (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 distribution typifying the behavior of the device when used with 40% or more of the total resistance in use. 4. Derated linearly from full power @ + 85C to zero (0) watts @ + 150C. See Figure 2 on previous page. 5. Independent of resistance value. 3 ohms maximum available on special request. 6. All R's are measured to the tolerance specified + 0.01 ohms 7. Whichever is greater. Special Available Options: Special marking Burn-in and screening operations * ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081 VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 Document Number: 63054 Revision 05-Aug-02 www.vishay.com 151 |
Price & Availability of 1260
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