Model 128 www.vishay.com Vishay Spectrol 1 1/16" (27 mm) Single Turn Conductive Plastic Precision Potentiometer FEATURES • 1 1/16" round • Bushing mount and servo mount types • Designed for high reliability applications • Ohmic value range: 500 to 50 k • Rotational life exceeds 20 million shaft revolutions • Virtually infinite resolution • Up to 6 sections available QUICK REFERENCE DATA Sensor type Output type Market appliance • Co-molded track and multi-finger wiper provide low noise signal ROTATIONAL, conductive plastic Output by turrets Professional • Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 1 1/16" (27 mm) Dimensions ELECTRICAL SPECIFICATIONS PARAMETER STANDARD SPECIAL 500 to 50 k Total Resistance Tolerance ± 10 % ±5% Linearity (independent) ± 0.5 % ± 0.15 % Electrical Angle 345° ± 4° Power Rating Section 1: 1.25 W at 70 °C ambient, derated to zero at 125 °C ambient Additional Section: 75 % of the rating of section 1 Output Smoothness 0.1 % maximum Insulation Resistance 1000 M minimum, 500 VDC Dielectric Strength 1000 VRMS, 60 Hz Phasing (CCW End Points) Points at which output ratio is 0.5 aligned ± 1° (ref. section 1) Temperature Coefficient of Resistance ± 600 ppm/°C maximum Taps (extra) Extra taps available as special ORDERING INFORMATION/DESCRIPTION The Model 128 can be ordered from this datasheet with a variety of alternate characteristics, as shown above. For most rapid service on your order, please state: 128 S 1 1K BO1 MODEL MOUNTING NUMBER OF SECTIONS TOTAL RESISTANCE OF EACH SECTION PACKAGING B: Bushing S: Servo Up to 6 Beginning with the section nearest the mounting end Box of 1 piece Other characteristics will be standard as described on this datasheet. If special characteristics are required, such as: special linearity tolerance, special resistance tolerance, extra taps, non-linear functions, etc., please state these on your order and allow additional lead time for delivery. SAP PART NUMBERING GUIDELINES 128 MODEL Revision: 05-Apr-13 S 3 103 102 203 B01 STYLE GANGS OHMIC VALUE GANG N° 1 OHMIC VALUE GANG N° 2 OHMIC VALUE GANG N° 3 PACKAGING B: Bushing S: Servo From 1 up to 6 10K 1K 20K Box of 1 piece Document Number: 57037 1 For technical questions, contact: [email protected] 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 Model 128 www.vishay.com Vishay Spectrol DIMENSIONS in inches (millimeters) BUSHING MOUNT: 128B/128-1... ± 0.010 0.687 (17.45) 1 ± 0.031 0.875 (22.22) 0.375 (9.52) ± 0.015 3 0.308 MIN. (7.82) 30° TYP. + 0.0000 0.062 (1.57) 2 Ø 0.4062 (10.32) Ø 1.062 (26.97) 1 Ø 0.1248 - 0.0003 (3.17) + 0.0000 - 0.0010 ± 0.015 3/ MTG. FACE 8 32 UNEF - 2A R 0.735 MAX. (18.67) SERVO MOUNT: 128S/128-2... ± 0.031 0.308 MIN. (7.82) 0.500 (12.70) 0.062 (1.57) 0.062 (1.57) 0.062 (1.57) + 0.0000 Ø 0.9688 - 0.0005 (24.61) 1 ADD 0.782 ± 0.002 (19.86) FOR EACH ADDITIONAL SECTION 2 Ø 1.062 (26.97) CW ± 0.015 Ø 1.062 (26.97) SCHEMATIC + 0.0000 0.1248 - 0.0003 Ø (3.17) Ø 0.968 MAX. (24.58) 3 1 TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° MTG. FACE MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing Type Torque (maximum) Servo, 1 Section Bushing, 1 Section Each Additional Section Mechanical Runouts (maximum) Shaft Runout (TIR/in) Pilot Dia. Runout (TIR/in) Lateral Runout (TIR) Shaft End Play Shaft Radial Play Weight (maximum): Single Section Each Additional Section Ganging Moment of Inertia Revision: 05-Apr-13 360° continuous SERVO MOUNT Ball bearing BUSHING MOUNT Sleeve bearing STARTING 0.25 oz. - in (18.0 g - cm) 0.30 oz. - in (21.6 g - cm) 0.20 oz. - in (14.4 g - cm) RUNNING 0.15 o.z - in (10.8 g - cm) 0.25 oz. - in (18.0 g - cm) 0.15 oz. - in (10.8 g - cm) SERVO 0.002" (0.05 mm) 0.002" (0.05 mm) 0.002" (0.05 mm) 0.005" (0.13 mm) 0.002" (0.05 mm) BUSHING 0.002" (0.05 mm) 0.002" (0.05 mm) 0.005" (0.13 mm) 0.005" (0.13 mm) 0.003" (0.08 mm) 0.8 oz. (22.7 g) 0.4 oz. (11.3 g) 6 sections maximum, terminal alignment, added sections, within ± 10° of section 1 terminals 0.12 g - cm2 per section maximum Document Number: 57037 2 For technical questions, contact: [email protected] 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 Model 128 www.vishay.com Vishay Spectrol MATERIAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS Housing and Lids Vibration Aluminum, anodized Shaft Stainless steel, non-magnetic non-passivated Terminals Brass plated for solderability 15 g thru 2000 Hz Shock 50 g Salt Spray 96 h Rotational Life Bushing Mount Hardware Lockwasher Internal Tooth: Panel Nut: Steel, nickel plated Brass, nickel plated Servo: 20 million shaft revolutions Bushing: 5 million shaft revolutions Load Life 900 h Temperature Range - 55 °C to + 125 °C MECHANICAL SPECIFICATIONS Units shall be marked with Vishay Spectrol name, model number and data code on each section, resistance, resistance tolerance, linearity and terminal identification. Example of a marking for a standard part: 128-11103 Unit Identification POWER RATING CHART RESISTANCE ELEMENT DATA RATED POWER IN W (Ratings for cup No. 1. Additional cups 75 % of values shown) RESISTANCE VALUES () MAXIMUM VOLTAGE APPLICABLE (V) 500 25 1K 35 2K 50 5K 79 10K 112 20K 158 50K 250 2.0 1.5 1.0 0.5 0 20 40 60 80 100 120 140 AMBIENT TEMPERATURE IN °C Revision: 05-Apr-13 160 Document Number: 57037 3 For technical questions, contact: [email protected] 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 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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 in any datasheet or in any other disclosure relating to any product. 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We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU. Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000