14921F0GJSX13103KA Vishay

148, 149 Vishay Spectrol 1/2 (12.7 mm) Conductive Plastic and Cermet Potentiometers FEATURES Robust construction High rotational life (50 000 cycles) Up to three sections PC support plates Rotary switches and solder lugs terminals available Compliant to RoHS directive 2002/95/EC since date code 0414 148 FEATURES Conductive plastic element Quiet electrical output 149 FEATURES Cermet element Low temperature coefficient ( 150 ppm/C) DIMENSIONS in inches (millimeters) 0.02 ( 0.5) SINGLE, DUAL OR TRIPLE SOLDER LUG TERMINALS 0.492 0.64 8 (12.50) 0.492 (16.45) (12.500) 0.1 85 0.34 8 0.375 (4.70) 0.047 0.031 0.250 (9.520) ( 8. 83) (1.200) 0.315 (0. 8 0) (6.35) ( 8 .000) 0.024 (0.60) thread 1/4 32-NEF-2A 0.100 0.012 0.012 0.100 0.035 (0.300) (2.54) (0.030) (0.900) (2.54) 0.1 88 0.200 0.300 0.071 (1.770) (5.07) 123 (7.62) (1. 800) thread 3/ 8 32-NEF-2A 0.1 8 3 0.1 83 (4.650) (4.650) 123 FRONT AND REAR SUPPORT PLATES E = Flush with board surface 0.492 (12.50) 0.1 85 (4.70) 0.031 Dual Single (0. 80) 0.06 0.25 0.06 (1.52) 0.1 (6.35) 0.1 (1.52) (2.54) 0.25 0.151 (2.54) (6.3 8) (1.52) 0.2 0.3 0.2 0.151 (5.0 8 ) (7.62) (3. 85) (5.0 8) 123 www.vishay.com For technical questions, contact: sfer vishay.com Document Number: 57040 102 Revision: 01-Apr-09 0 . 4 9 2 ( 1 2 . 5 0 ) 0 . 0 2 4 ( 0 . 80 ) 0 . 0 2 4 0 . 4 9 2 ( 0 . 6 0 ) ( 1 2 . 5 0 ) 0 . 3 4 1 ( 8. 85 ) 0 . 1 2 5 ( 3 . 1 7 ) 0 . 4 9 2 ( 1 2 . 5 0 0 ) 0 . 0 2 4 ( 0 . 6 0 0 ) 0 . 0 9 4 ( 2 . 4 0 0 ) 0 . 1 9 3 ( 4 . 9 0 0 ) 0 . 2 5 0 ( 6 . 3 80 ) 148, 149 1/2 (12.7 mm) Conductive Plastic and Cermet Vishay Spectrol Potentiometers ELECTRICAL SPECIFICATIONS PARAMETER 148 149 Linear 1 k to 1 M 100 to 2 M Resistance Range Non-Linear 500 to 500 k 250 to 1 M Linear 10 % 10 % Tolerance Non-Linear 20 % on request 10 % 10 % Linearity (Typical) 5 % independent End Resistance 4 maximum each end 0.5 W at 70 C 1 W at 70 C 0 W at 120 C 0 W at 150 C Power Rating Non-Linear or PC mount, derate 50 % c a (3) (1) Circuit Diagram b cw (2) 270 10 without rotary switch Effective Rotation 240 10 with rotary switch Contact Resistance Variation 1.5 % of total resistance 3 % of total resistance Maximum Continuous Working Voltage 350 V across end terminals, but within power rating AC Dielectric Withstanding Voltage Sea Level - 750 V AC MECHANICAL SPECIFICATIONS Mechanical Travel 300 5 Operating Torque (Typical) Single section 0.2 to 3.0 oz. - in dual or triple section 0.3 to 4.5 oz.-in Bushing A and B 2.1 in-lbs max. End Stop Torque Bushing F 6.8 in-lbs max. Single 0.19 oz. Weight (approx.) Dual 0.27 oz. Triple 0.35 oz. Electrical Elements e3: Pure Sn Terminals Switch Elements e4: Gold plated ENVIRONMENTAL SPECIFICATIONS 148 149 Operating Temperature - 40 C to + 120 C - 40 C to + 125 C Storage Temperature - 55 C to + 120 C - 55 C to + 150 C Temperature Cycling (5 Cycles) - 40 C to + 120 C (4 % R ) - 40 C to + 150 C (3 % R ) T T Load Life (1000 h Rated Load at 70 C) 10 % R 5 % R T T Rotational Load Life 50 000 cycles TCR (Typical) 500 ppm/C 150 ppm/C Sealing IP64 Document Number: 57040 For technical questions, contact: sfer vishay.com www.vishay.com Revision: 01-Apr-09 103