Model 208 www.vishay.com Vishay Spectrol 1 3/4" (44.5 mm) Single Turn Conductive Plastic Precision Potentiometer FEATURES • Rotational life revolutions exceeds 20 million shaft • Virtually infinite resolution • Designed for high reliability applications • Co-molded track and multi-finger wiper provide low noise signal • Bushing or servo types available up to 6 sections QUICK REFERENCE DATA • Ohmic value range: 1 k to 50 k Sensor type Output type Market appliance • Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 ROTATIONAL, conductive plastic Output by turrets Professional Dimensions 1 ¾" (44.5 mm) ELECTRICAL SPECIFICATIONS PARAMETER Total resistance tolerance Linearity (independent) STANDARD 1 k to 50 k ± 10 % SPECIAL ±5% STANDARD ± 0.3 % SPECIAL ± 0.1 % Electrical angle 350° ± 3° Power rating: Section 1: Additional sections 1.75 W at 70 °C ambient derated to zero at 125 °C 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 Taps (extra) Extra taps available as special Phasing Points at which output ratio is 0.5 aligned ± 1° (ref. to section 1) Temperature coefficient of resistance ± 600 ppm/°C maximum ORDERING INFORMATION/DESCRIPTION The Model 208 can be ordered from this datasheet with a variety of alternate characteristics, as shown above. For most rapid service on your order, please state: 208 B 1 10K 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 208 S 2 103 502 B01 MODEL STYLE GANG NUMBERS OHMIC VALUE GANG N° 1 OHMIC VALUE GANG N° 2 PACKAGING B: Bushing S: Servo From 1 up to 6 10K 5K Revision: 27-Mar-15 Document Number: 57053 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 208 www.vishay.com Vishay Spectrol DIMENSIONS in inches (millimeters) SERVO MOUNT: 208S/208-2 ± 0.010 ± 0.031 0.831 (21.10) 1 0.625 (15.88) 0.340 MIN. (8.64) 16° 20° TYP. 0.073 MIN. (1.85) 3 1 2 ± 5° 45° 0.093 (2.36) 1.075 R MAX. (27.30) ± 0.015 Ø 1.750 (44.45) Ø 1.750 (44.45) Ø 1.562 MAX. (39.67) + 0.0000 Ø 1.5620 - 0.0005 (39.67) 0.062 (1.57) + 0.0000 Ø 0.2497 - 0.0003 (6.34) MTG. FACE 1.015 R MAX. (25.78) 1 ± 0.010 0.705 (17.91) ± 0.031 0.875 (22.22) 0.239 MIN. (6.07) 0.062 (1.57) ± 0.015 0.375 (9.52) 3/ 8 - 32 UNEF - 2A BUSHING MOUNT: 208B/208-1 + 0.0000 Ø 0.2497 - 0.0003 (6.34) ± 0.015 Ø 0.4062 (10.32) 0.010 (0.25) 1 + 0.0000 - 0.0010 Ø 1.000 (25.40) Ø 1.750 (44.45) MTG. FACE 2 ADD 0.500 ± 0.002 (12.70) FOR EACH ADDITIONAL SECTION CW 3 1 TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° SCHEMATIC MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing type Ganging Torque (maximums) Servo section 1 Bushing section 1 Each additional section Mechanical runouts (maximums): Shaft (TIR/in) Pilot dia. (TIR) Lateral (TIR) Shaft end play Shaft radial play Moment of inertia Weight: Single section Each additional section Revision: 27-Mar-15 360° continuous SERVO MOUNT BUSHING MOUNT Ball bearing Sleeve bearing 6 sections maximum terminal alignment, added sections within ± 10° of section 1 terminals RUNNING STARTING 0.4 oz. - in (28.80 g - cm) 0.7 oz. - in (50.40 g - cm) 0.7 oz. - in (50.40 g - cm) 1.0 oz. - in (72.0 g - cm) 0.3 oz. - in (21.60 g - cm) 0.4 oz. - in (28.80 g - cm) BUSHING SERVO 0.002" (0.05 cm) 0.002" (0.05 cm) 0.002" (0.05 cm) 0.002" (0.05 cm) 0.005" (0.13 cm) 0.003" (0.08 cm) 0.005" (0.13 cm) 0.005" (0.13 cm) 0.003" (0.08 cm) 0.002" (0.05 cm) 1.0 g - cm2 per section maximum 3.0 oz. (85.05 g) 1.0 oz. (28.35 g) Document Number: 57053 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 208 www.vishay.com Vishay Spectrol MATERIAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS Housing and lids Vibration Aluminium, anodized Shaft and clamp rings Stainless steel, non-magnetic non-passivated Terminals Brass, plated for solderability Bushing mount hardware Lockwasher internal tooth: Panel nut: 15 g thru 2000 Hz Shock 50 g Salt Spray 96 h Steel, nickel plated Brass, nickel plated Servo: 20 million shaft revolutions Bushing: 5 million shaft revolutions Rotational life MARKING Load life Units shall be marked with 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: 208-12502 103 Unit identification POWER RATING CHART RATED POWER IN W (Ratings for cup No. 1. Additional cups 75 % of values shown) 900 h Operating temperature range -55 °C to +125 °C Note • Nothing stated herein shall be construed as a guarantee of quality or durability. RESISTANCE ELEMENT DATA 3.0 RESISTANCE VALUES () MAXIMUM VOLTAGE APPLICABLE (V) 1K 42 2K 59 2.5 2.0 1.5 1.0 0.5 0 20 40 60 80 100 120 140 160 5K 94 10K 132 20K 187 50K 299 AMBIENT TEMPERATURE IN °C Revision: 27-Mar-15 Document Number: 57053 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. 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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