Model 708 www.vishay.com 7/ 8" Vishay Spectrol (22.2 mm) Single Turn Conductive Plastic Precision Potentiometer FEATURES • Virtually infinite resolution • Bushing mount and servo mount types available • Rotational life exceeds 20 million shaft revolutions • Co-molded track and multi-finger wiper provide low noise signal • Ohmic value range: 500 to 50 k QUICK REFERENCE DATA 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 7/ " 8 Dimensions (22.2 mm) ELECTRICAL SPECIFICATIONS PARAMETER 500 to 50 k Total resistance standard range Tolerance STANDARD ± 10 % SPECIAL ±5% Linearity (independent) STANDARD ± 0.5 % SPECIAL ± 0.2 % Electrical angle 340° ± 5° Power Rating Section 1: Additional sections: 1.0 W at 70° 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 from terminals to shaft Taps (extra) Extra taps available as special Points at which output is 0.5 aligned ± 1° (ref. to section 1) Phasing Temperature coefficient of resistance ± 600 ppm/°C maximum ORDERING INFORMATION/DESCRIPTION The Model 708 can be ordered from this datasheet with a variety of alternate characteristics, as shown. For most rapid service on your order, please state: 708 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 708 MODEL Revision: 27-Mar-15 S 2 102 103 B01 STYLE GANGS OHMIC VALUE GANG No 1 OHMIC VALUE GANG No 2 PACKAGING B: Bushing S: Servo From 1 up to 6 1K 10K Document Number: 57070 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 708 www.vishay.com Vishay Spectrol DIMENSIONS in inches (millimeters) BUSHING MOUNT: 708B/708-1 ± 0.010 ± 0.031 0.687 (17.45) 1 0.500 (12.70) 3 0.250 ± 0.015 (6.35) 0.308 MIN. (7.82) TYP. 1 30° TYP. 2 0.062 (1.57) 3/ 8 - 32 UNEF -2A + 0.0000 - 0.0010 ± 0.015 Ø 0.875 (22.22) Ø 0.4062 (10.32) 0.640 R MAX. (16.26) + 0.0000 Ø 0.1248 - 0.0003 (3.17) MTG. FACE SERVO MOUNT: 708S/708-2 ± 0.010 ± 0.031 0.687 (17.45) 1 0.500 (12.70) 0.062 (1.57) 0.062 (1.57) 0.062 (1.57) ± 0.015 Ø 0.875 (22.22) 2 + 0.0000 Ø 0.750 MAX. (19.05) Ø 0.7500 - 0.0005 (19.05) Ø 0.875 (22.22) CW 3 1 SCHEMATIC + 0.0000 Ø 0.1248 - 0.0003 (3.17) MTG. FACE TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° 1 ADD 0.500 ± 0.002 (12.70) FOR EACH ADDITIONAL SECTION MECHANICAL SPECIFICATIONS PARAMETER Rotation 360° continuous Bearing type Servo mount: Bushing mount: Torque (maximum) Servo, 1 section Bushing, 1 section Each additional section Runouts (maximum) Shaft runout (TIR/in) Pilot dia. runout (TIR) Lateral runout (TIR) Shaft end play Shaft radial play Weight (maximum) Single section: Each additional section: Ganging Moment of inertia Revision: 27-Mar-15 Ball bearing Sleeve bearing STARTING 0.10 oz. - in (7.20 g - cm) 0.25 oz. - in (18.00 g - cm) 0.10 oz. - in (7.20 g - cm) RUNNING 0.085 oz. - in (6.12 g - cm) 0.20 oz. - in (14.40 g - cm) 0.075 oz. - in (5.40 g - cm) SERVO 0.002" (0.05 cm) 0.002" (0.05 cm) 0.002" (0.05 cm) 0.005" (0.13 cm) 0.002" (0.05 cm) BUSHING 0.002" (0.05 cm) 0.002" (0.05 cm) 0.005" (0.13 cm) 0.005" (0.13 cm) 0.004" (0.10 cm) 0.6 oz. (17.0 g) 0.2 oz. (5.67 g) 6 sections max, terminal alignment, added sections within ± 10° of section 1 terminals 0.12 g - cm2 per section maximum Document Number: 57070 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 708 www.vishay.com Vishay Spectrol MATERIAL SPECIFICATIONS Housing and lids ENVIRONMENTAL SPECIFICATIONS Aluminum, anodized Shaft Stainless steel, non-magnetic non-passivated Terminals Brass plated for solderability Bushing mount hardware Lockwasher internal tooth: Panel nut: Steel, nickel plated Brass, nickel plated Vibration 15 g thru 2000 Hz Shock 50 g Salt spray 96 h Rotational life Load life Servo: 20 million shaft revolutions Bushing: 5 million shaft revolutions 900 h Temperature range -55 °C to +125 °C Note • Nothing stated herein shall be construed as a guarantee of quality or durability. MARKING Units shall be marked with Spectrol name, model no, and data code, and on each section, resistance, resistance tolerance, linearity and terminal identification. Example of a marking for a standard part: 708-22102103 Unit identification POWER RATING CHART RATED POWER IN W (Ratings for cup No. 1. Additional cups 75 % of values shown) 2.0 1.5 1.0 0.5 RESISTANCE ELEMENT DATA RESISTANCE VALUES () MAXIMUM VOLTAGE APPLICABLE (V) 500 22 1K 32 2K 45 5K 71 10K 100 20K 141 50K 224 0 20 40 60 80 100 120 140 160 AMBIENT TEMPERATURE IN °C Revision: 27-Mar-15 Document Number: 57070 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. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. 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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