S S S 14 , 17 , 18 www.vishay.com Vishay Techno Multi-Turn 1/4 (6.35 mm) Square Wirewound Trimmers FEATURES Precious metal wiper 0.25 W to +85 C TCR < 50 ppm/C Solderable leads APPLICATIONS Special configurations available Wirewound trimmers are particularly useful in those Military quality at affordable prices applications where any combination of high power, low temperature coefficient of resistance and/or excellent long ENVIRONMENTAL SPECIFICATIONS term life stability are important design considerations. Temperature limits: -65 C to +175 C Sealing: fully sealed case (non-hermetic) ELECTRICAL SPECIFICATIONS Electrical travel 22 turns 4 turns STANDARD RESISTANCE VALUES 10 to 5 k (extended range Resistance range (1) RESISTANCE NOMINAL RESOLUTION available in non MIL-SPEC product) () (%) Resistance tolerance 5 % standard 10 1.65 Temperature 20 1.35 coefficient 50 ppm/C (-65 C to +150 C) 50 1.13 0.5 W at +85 C derated to 0 W at 100 0.82 Power rating +150 C, these specifications exceed 200 0.62 MIL-SPEC 500 0.62 End resistance 1 or 2 %, whichever is greater 1K 0.49 Equivalent noise 100 maximum 2K 0.34 resistance (ENR) 5K 0.27 1000 V at atmospheric pressure, AC Dielectric (DWV) these specifications exceed 10K 0.21 MIL-SPEC 20K 0.17 > 100 000 M (500 V ), these DC Insulation resistance 25K 0.16 specifications exceed MIL-SPEC Note MECHANICAL SPECIFICATIONS (1) Other resistances available upon request S S Operating torque: 3 oz.-inches maximum, 17 and 18 , S 5 oz.-inches maximum, 14 CIRCUIT DIAGRAM Rotation: clutch stop, wiper idles Weight: 0.935 g maximum Resistive element: nickel chromium 1 3 CW Rotational life: 200 cycles minimum 2 Terminal strength: 2 lbs for 10 s GLOBAL PART NUMBER INFORMATION New Global Part Numbering: 14S500RB (preferred part number format) 14 S5 0 0 R B GLOBAL MODEL TYPE RESISTANCE VALUE PACKAGING 14 = side adjustment screw / = continuous rotation R = decimal B = bulk 17 = top adjustment screw S = clutch stop K = thousand 18 = side adjustment screw 100R = 100 5K00 = 5 k Historical Part Numbering: 14s501 (will continue to be accepted) 14 s 501 HISTORICAL MODEL TYPE RESISTANCE VALUE Revision: 26-Jul-2021 Document Number: 68017 1 For technical questions, contact: sfer vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 S S S 14 , 17 , 18 www.vishay.com Vishay Techno DIMENSIONS 1/4 (6.35 mm) SQUARE in inches (millimeters) S S W Lead Style - 17 X Lead Style - 18 0.030 0.010 (0.762 0.254) 0.160 0.010 0.045 0.005 0.038 0.005 (0.406 0.254) (1.14 0.127) 0.020 0.003 (0.965 0.127) (0.508 0.076) 0.260 0.005 0.020 0.003 0.100 0.005 (6.60 0.127) (0.508 0.076) 0.045 0.005 (2.54 0.127) 0.211 0.005 (1.14 0.127) 0.062 0.005 0.172 (4.37) (5.36 0.127) (1.57 0.127) Min. 0.100 0.005 0.020 0.003 (2.54 0.127) 0.260 0.005 (0.508 0.076) 0.120 0.005 0.016 0.001 (6.60 0.127) 0.020 0.003 12 3 (3.05 0.127) (0.406 0.025) (0.508 0.076) 0.211 0.005 0.030 0.010 0.172 (4.37) Dia. (5.36 0.127) (0.762 0.254) Min. 0.016 0.001 0.160 0.010 0.120 0.005 (0.406 0.025) (4.06 0.254) 0.038 0.005 (3.05 0.127) Dia. (0.965 0.127) 0.100 0.005 0.062 0.005 (2.54 0.127) (1.57 0.127) 0.100 0.005 Dia. (2.54 0.127) S X Lead Style - 14 0.050 0.010 0.020 0.014 (0.356) 0.062 0.002 (1.27 0.254) (0.508) Min. (1.57 0.051) Dia. 3 0.250 0.015 2 0.100 (6.35 0.381) (2.54) 0.013 0.001 1 (0.330 0.025) 0.120 0.010 0.210 Dia. 0.038 (3.05 0.254) (5.33) (0.965) 0.156 0.010 0.172 (4.37) (3.96 0.254) Min. ENVIRONMENTAL PERFORMANCE MIL-R-27208 TYPICAL (1) TEST CONDITIONS REQUIREMENT CHANGE (2) Thermal shock (107) 5 cycles, -55 C to +125 C R 1.0 % R < 0.02 % (2)(3) Low temperature operation 1 h storage, 45 min rated power at -55 C R 1.0 % R < 0.01 % (2)(3) High temperature exposure 250 h, no load at +150 C R 1.0 % R < 0.03 % 240 h at rated power with humidity ranging (2) Moisture resistance (106) R 1.0 % R < 0.02 % from 80 % RH to 98 % RH (2) Resistance to soldering heat (210) +350 C for 3 s R 1.0 % R < 0.01 % (2)(3) Shock (213) 18 shocks, 100 g, 6 ms, sawtooth, 3 axes R 1.0 % R < 0.07 % (2)(3) Vibration (204) 10 Hz to 2000 Hz, 20 g, 12 h, 3 axes R 1.0 % R < 0.02 % Rotational life 200 cycles R 2.0 % R < 0.04 % Load life (108) 1000 h at rated power at +85 C R 2.0 % R < 0.12 % Notes (1) Numbers in parenthesis refer to test method MIL-STD-202 as modified by the detail specification (2) For values below 100 , add 0.05 to the allowable change (3) The referenced tests also require that setting stability change shall not exceed 1.0 % plus the specified maximum resolution and operating torque shall not exceed 150 % of the specified maximum DERATING 0.50 0.40 0.30 0.20 0.10 0 25 50 75 85 100 125 150 175 AMBIENT TEMPERATURE C Revision: 26-Jul-2021 Document Number: 68017 2 For technical questions, contact: sfer vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc 91000 W