Model 208 Vishay Spectrol 1 3/4" (44.5 mm) Single Turn Conductive Plastic Precision Potentiometer FEATURES * Rotational life exceeds 20 million shaft revolutions RoHS * Virtually infinite resolution COMPLIANT * 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 * Ohmic value range: 1 k to 50 k ELECTRICAL SPECIFICATIONS PARAMETER 10 % SPECIAL 5% STANDARD 0.3 % SPECIAL 0.1 % STANDARD 1 k to 50 k Total Resistance Tolerance Linearity (Independent) 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 400 ppm/C maximum ORDERING INFORMATION/DESCRIPTION The Model 208 can be ordered from this data sheet 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 data sheet. 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 NO 1 OHMIC VALUE GANG NO 2 PACKAGING B: Bushing S: Servo From 1 up to 6 10K 5K Document Number: 57053 Revision: 04-Mar-08 For technical questions, contact: sfer@vishay.com www.vishay.com 35 Model 208 1 3/4" (44.5 mm) Single Turn Conductive Plastic Precision Potentiometer Vishay Spectrol DIMENSIONS in inches (millimeters) SERVO MOUNT: 208 S 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 O 1.750 (44.45) O 1.750 (44.45) O 1.562 MAX. (39.67) + 0.0000 O 1.5620 - 0.0005 (39.67) 0.062 (1.57) + 0.0000 O 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) 0.015 0.375 (9.52) 0.239 MIN. (6.07) 0.062 (1.57) 3/ 8 - 32 UNEF - 2A BUSHING MOUNT: 208 B + 0.0000 O 0.2497 - 0.0003 (6.34) 0.015 O 0.4062 (10.32) 0.010 (0.25) 1 + 0.0000 - 0.0010 O 1.750 (44.45) O 1.000 (25.40) 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 www.vishay.com 36 360 continuous SERVO MOUNT Ball bearing BUSHING MOUNT Sleeve bearing 6 sections maximum terminal alignment, added sections within 10 of section 1 terminals STARTING 0.7 oz. - in (50.40 g - cm) 1.0 oz. - in (72.0 g - cm) 0.4 oz. - in (28.80 g - cm) RUNNING 0.4 oz. - in (28.80 g - cm) 0.7 oz. - in (50.40 g - cm) 0.3 oz. - in (21.60 g - cm) SERVO 0.002" (0.05 cm) 0.002" (0.05 cm) 0.003" (0.08 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) 0.003" (0.08 cm) 1.0 g - cm2 per section maximum 3.0 oz. (85.05 g) 1.0 oz. (28.35 g) For technical questions, contact: sfer@vishay.com Document Number: 57053 Revision: 04-Mar-08 Model 208 1 3/4" (44.5 mm) Single Turn Conductive Plastic Precision Potentiometer MATERIAL SPECIFICATIONS Housing and Lids ENVIRONMENTAL SPECIFICATIONS 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: Steel, nickel plated Brass, nickel plated MARKING Units shall be marked with Spectrol name, model number and data code on each section, resistance, resistance tolerance, linearity and terminal identification Unit Identification POWER RATING CHART Vibration 15 g thru 2000 Hz Shock 50 g Salt Spray 96 h Servo: 20 million shaft revolutions Bushing: 5 million shaft revolutions Rotational Life Load Life 900 h Operating Temperature Range - 55 C to + 125 C RESISTANCE ELEMENT DATA (Ratings for cup No.1. Additional cups 75 % of values shown) RATED POWER IN W Vishay Spectrol RESISTANCE VALUES () MAXIMUM VOLTAGE APPLICABLE (V) 2.5 1K 42 2.0 2K 59 1.5 5K 94 1.0 10K 132 20K 187 50K 299 3.0 0.5 0 20 40 60 80 100 120 140 160 AMBIENT TEMPERATURE IN C Document Number: 57053 Revision: 04-Mar-08 For technical questions, contact: sfer@vishay.com www.vishay.com 37 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1