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| Model 128 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 * Co-molded track and multi-finger wiper provide low noise signal RoHS COMPLIANT ELECTRICAL SPECIFICATIONS PARAMETER STANDARD Total Resistance: Tolerance Linearity (Independent) Electrical Angle Power Rating Section 1: Additional Section: Output Smoothness Insulation Resistance Dielectric Strength Phasing (CCW End Points) Temperature Coefficient of Resistance Taps (Extra) 1.25 W at 70 C ambient, derated to zero at 125 C ambient 75 % of the rating of section 1 0.1 % maximum 1000 M min, 500 VDC 1000 VRMS, 60 Hz Points at which output ratio is 0.5 aligned 1 (ref. section 1) 400 ppm/C maximum Extra taps available as special 500 to 50 k 10 % 0.5 % 345 4 5% 0.15 % SPECIAL ORDERING INFORMATION/DESCRIPTION The Model 128 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: 128 MODEL S MOUNTING B: Bushing S: Servo 1 NUMBER OF SECTIONS Up to 6 1K TOTAL RESISTANCE OF EACH SECTION Beginning with the section nearest the mounting end BO1 PACKAGING 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 128 MODEL S STYLE B: Bushing S: Servo www.vishay.com 32 3 GANGS From 1 up to 6 103 OHMIC VALUE GANG NO 1 10K 102 OHMIC VALUE GANG NO 2 1K 203 OHMIC VALUE GANG NO 3 20K B01 PACKAGING Box of 1 piece For technical questions, contact: sfer@vishay.com Document Number: 57037 Revision: 04-Jul-07 Model 128 1 1/16" (27 mm) Single Turn Conductive Plastic Precision Potentiometer DIMENSIONS in inches (millimeters) 0.010 Vishay Spectrol 1 0.687 (17.45) BUSHING MOUNT: 128 B 0.875 (22.22) 0.031 0.375 (9.52) 0.015 0.308 MIN. (7.82) 0.062 (1.57) O 0.1248 - 0.0003 (3.17) + 0.0000 3 30 TYP. 1 2 O 0.4062 (10.32) + 0.0000 - 0.0010 O 1.062 (26.97) 0.015 3/ MTG. FACE 0.308 MIN. (7.82) 0.500 (12.70) 0.062 (1.57) 0.062 (1.57) 0.062 (1.57) 8 32 UNEF - 2A R 0.735 MAX. (18.67) SERVO MOUNT: 128 S 0.031 + 0.0000 O 0.9688 - 0.0005 (24.61) 1 ADD 0.782 0.002 (19.86) FOR EACH ADDITIONAL SECTION 2 CW 3 O 1.062 (26.97) 0.015 O 1.062 (26.97) 1 SCHEMATIC TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS 0.005 ANGLES 2 O 0.968 MAX. (24.58) MTG. FACE O (3.17) + 0.0000 0.1248 - 0.0003 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 Document Number: 57037 Revision: 04-Jul-07 SERVO MOUNT Ball 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) 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) 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 For technical questions, contact: sfer@vishay.com www.vishay.com 33 360 continuous BUSHING MOUNT Sleeve bearing 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) 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) Model 128 Vishay Spectrol 1 1/16" (27 mm) Single Turn Conductive Plastic Precision Potentiometer ENVIRONMENTAL SPECIFICATIONS Vibration Shock Salt Spray Rotational Life Bushing Mount Hardware Lockwasher Internal Tooth, Panel Nut: Steel, nickel plated Brass, nickel plated Load Life Temperature Range 15 g thru 2000 Hz 50 g 96 h Servo: 20 million shaft revolutions Bushing: 5 million shaft revolutions 900 h - 55 C to + 125 C MATERIAL SPECIFICATIONS Housing and Lids Shaft Terminals Aluminum, anodized Stainless steel, non-magnetic non-passivated Brass plated for solderability MECHANICAL SPECIFICATIONS Unit Identification Units shall be marked with Vishay Spectrol name, model number and data code on each section, resistance, resistance tolerance, linearity and terminal identification POWER RATING CHART (Ratings for cup No. 1. Additional cups 75 % of values shown) RESISTANCE ELEMENT DATA RESISTANCE VALUES () 500 MAXIMUM VOLTAGE APPLICABLE (V) 25 35 50 79 112 158 250 RATED POWER IN W 2.0 1.5 1.0 0.5 0 1K 2K 5K 10K 20 40 60 80 100 120 140 160 20K 50K AMBIENT TEMPERATURE IN C www.vishay.com 34 For technical questions, contact: sfer@vishay.com Document Number: 57037 Revision: 04-Jul-07 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 |
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