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1242

Vishay Siliconix
Part Number 1242
Manufacturer Vishay Siliconix
Description Foil Technology Precision Trimming Potentiometers
Published Dec 12, 2008
Detailed Description 1242 Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers, QPL Approved 1/4 Inch Square,...
Datasheet PDF File 1242 PDF File

1242
1242

Overview
1242 Vishay Foil Resistors Bulk Metal® Foil Technology Precision Trimming Potentiometers, QPL Approved 1/4 Inch Square, Qualified to MIL-PRF-22097, Char.
F, RJ26 FEATURES • Temperature coefficient of resistance (TCR): ± 10 ppm/°C maximum4) (- 55 °C to + 150 °C ref.
at + 25 °C); through the wiper5); ± 25 ppm/°C • Load life stability: 0.
1 % typical ΔR, 1.
0 % maximum ΔR under full rated power of 0.
25 W at 85 °C for 1000 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: 50 Ω to 5 kΩ • Resistance tolerance: ± 10 % • Terminal finish: gold plated www.
DataSheet4U.
com TABLE 1 - MODEL SELECTION* MODEL 1242 (RJ26) TERMINATION STYLE W-edge mount, top adjust X-edge mount, side adjust AVERAGE WEIGHT (g) 0.
4 STANDARD RESISTANCE VALUES (in Ω)1) 50, 100, 200, 500, 1K, 2K, 5K STANDARD TOLERANCE2) ± 10 % POWER RATING at + 85 °C AMBIENT 0.
25 W NO.
OF TURNS 21 ± 2 Note * See figure 1 TABLE 2 - 1242 (RJ26) SERIES ELECTRICAL SPECIFICATIONS3) Temperature Coefficient of Resistance (TCR) End-to-end4) Through the wiper5) Stability Load life at 1000 h Power Rating (at + 85 °C)6) Settability Setting Stability Contact Resistance Variation - CRV (noise) Hop-off High-Frequency Operation Rise time Inductance Capacitance Operating Temperature Range Note • See page 3 for footnotes ± 10 ppm/°C maximum (- 55 °C to + 150 °C, 25 °C ref.
) ± 25 ppm/°C 0.
1 % typical ΔR 1.
0 % maximum ΔR (under full rated power of 0.
25 W at + 85 °C) 0.
25 W 0.
05 % typical; 0.
1 % maximum 0.
1 % typical; 0.
5 % maximum ΔSS ± 3 % or 3 Ω7) 0.
25 % typical; 1.
0 % maximum 1.
0 ns without ringing 0.
08 µH typical 0.
5 pF typical - 55 °C to + 150 °C TABLE 3 - MECHANICAL SPECIFICATIONS Adjustment Turns Mechanical Stops Internal Terminations Case Material Shaft Torque Backlash 21 ± 2 Wiper idles - no discontinuity All welded - no flux Diallyl-phthalate: green (DAP) 3 oz.
in.
maximum 0.
005 % typical Document Number: 63052 Revision: ...


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