302 VISHAY

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www.vishay.com Vishay Spectrol Revision: 22-Nov-16 1 Document Number: 57057 For technical questions, contact: sferprecisionpot@vishay.com 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 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer

FEATURES

  • Screw, servo and bushing mount types available
  • Large range of ohmic values: 5  to 85 k
  • Extra taps upon request
  • Gangable up to 6 sections on a same shaft
  • Material categorization: fo r definitions of compliance please see www.vishay.com/doc?99912 QUICK REFERENCE DATA Sensor type ROTATIONAL, single turn wirewound Output type Output by turrets Market appliance Professional Dimensions 2" (50.8 mm) ELECTRICAL SPECIFICATIONS PARAMETER Total resistance: Tolerance 50  and above Below 50  STANDARD 5  to 50 k ± 3 % ± 5 % SPECIAL 85 k ± 1 % ± 3 % Absolute minimum resistance Linearity x total resistance or 0.5  whichever is greater End voltage Linearity x total applied voltage for total resistance above 20 , 2.0 % of total applied voltage for 20  and below Linearity (independent) 5  to 50  50  to 200  200  to 1 k 1 k to 10 k 10 k and above STANDARD ± 1.0 % ± 0.50 % ± 0.25 % ± 0.25 % ± 0.25 % BEST PRACTICAL ± 0.50 % ± 0.35 % ± 0.20 % ± 0.15 % ± 0.10 % Noise 100  ENR Electrical angle 350° ± 2° Power rating Section 1: 4.0 W Additional sections 70 °C ambient derated to zero at 125 °C 75 % of the rating of section 1 (3.0 W at 70 °C) Insulation resistance 1000 M  minimum 500 V DC Dielectric strength 1000 V RMS, 60 Hz Taps (extra) 21 available as special, standard tolerance ± 1° Phasing (CCW end points) Additional sections phased to section 1 within ± 1°

ORDERING INFORMATION

MODEL STYLE GANGS OHMIC VALUE GANGS No 1 OHMIC VALUE GANGS No 2 SPECIAL REQUEST

302 B : bushing

S: servo C: screw 470 = 47  222 = 2.200  103 = 10 k For ohmic value range see electrical specification 470 = 47  222 = 2.200  103 = 10 k For ohmic value range see electrical specification xxxx

www.vishay.com Vishay Spectrol Revision: 22-Nov-16 2 Document Number: 57057 For technical questions, contact: sferprecisionpot@vishay.com 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 PART NUMBER DESCRIPTION (for information only) 302- 1 1 103 203 xxxx MODEL STYLE GANGS OHMIC VALUE GANGS No 1 OHMIC VALUE GANGS No 2 SPECIAL B: 1 S: 2 C: 3 DIMENSIONS in inches (millimeters) 1 3 CW SCHEMATIC 0.800 (20.32) ± 0.010 0.625 (15.88) 0.062 (1.57) ± 0.031 Ø 2.000 (50.80) ± 0.015 Ø 0.7500 (19.05) + 0.0000 - 0.0005 Ø 0.2497 (6.34) + 0.0000 - 0.0003 MTG. FACE 0.312 MIN. (7.92) 15° TYP. 1.200 R MAX. (30.48) 8 - 32 UNC - 2B

0.187 DEEP

(4.75) 3 HOLES EQUALLY SPACED Ø 1.250 B.C (31.75) 1.140 R MAX. (28.96) ± 0.005 45° ± 5° 0.705 (17.91) ± 0.010 0.875 (22.22) ± 0.031 0.375 (9.52) ± 0.015 3/8 - 32 UNEF 2A Ø 2.000 (50.80) ± 0.015 Ø 0.4062 (10.32) + 0.0000 - 0.0010 Ø 0.2497 (6.34) + 0.0000 - 0.0003 MTG. FACE 0.062 (1.57) 0.239 MIN. (6.07) Ø 2.000 (50.80) Ø 1.8750 (47.62) + 0.0000 - 0.0005 MTG. FACEØ 1.812 MAX. (46.02) Ø 2.000 (50.80) ± 0.015 0.062 (1.57) 0.093 (2.36) 0.831 (21.11) ± 0.010 0.625 (15.88) ± 0.031 0.073 MIN. (1.85) 0.340 MIN. (8.64) Ø 0.2497 (6.34) + 0.0000 - 0.0003 ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION ± 0.002 TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° BUSHING MOUNT: 302B/302-1 SCREW MOUNT: 302C/302-3 SERVO MOUNT: 302S/302-2

www.vishay.com Vishay Spectrol Revision: 22-Nov-16 3 Document Number: 57057 For technical questions, contact: sferprecisionpot@vishay.com 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 Note

  • Nothing stated herein shall be construed as a guarantee of quality or durability.POWER RATING CHART (Ratings for cup No. 1. Additi onal cups 75 % of values shown) MECHANICAL SPECIFICATIONS PARAMETER Rotation 360° (continuous) Bearing type Servo and screw mount: ball Bushing mount: sleeve Ganging 6 sections maximum, terminal alignment, added sections, within ± 10° of section 1 terminals Torque (maximums) Servo and screw (1 section) Bushing (1 section) Each added section STARTING 1.0 oz. - in (72.00 g - cm) 1.7 oz. - in (122.42 g - cm) 0.6 oz. - in (43.21 g - cm) RUNNING 0.5 oz. - in (36.00 g - cm) 1.0 oz. - in (72.00 g - cm) 0.4 oz. - in (28.80 g - cm) Mechanical runouts (maximums) Shaft (TIR/in) Pilot dia. (TIR) Lateral (TIR) Shaft end play Shaft radial play SERVO AND SCREWING 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) Moment of inertia 2.0 g - cm 2 per section maximum Weight (maximums) Single section: Each additional section: 4.0 oz. (113.40 g) 1.2 oz. (34.02 g) MATERIAL SPECIFICATIONS Housing and lids Aluminum, 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 ENVIRONMENTAL SPECIFICATIONS Vibration 15 g thru 2000 Hz Shock 50 g Salt spray 96 h Rotational life 1 mill ion shaft revolutions Temperature range -55 °C to +125 °C MARKING Unit identification Units shall be marked with Vishay Spectrol name, model no and date code, and on each section, resistance, resistance tolerance, linearity and terminal identification. Example of a marking for a standard part: 302-11202 AMBIENT TEMPERATURE IN °C RATED POWER IN W 20 40 60 80 100 120 140 160 0 SPECIAL 150 °C STANDARD 125 °C RESISTANCE ELEMENT DATA RESISTANCE VALUES () RESO- LUTION (%) OHMS PER TURN MAXIMUM CURRENT AT 40 °C AMBIENT (mA) MAXIMUM VOLTAGE ACROSS COIL (V) WIRE TEMP. COEF. (ppm/°C) 5 0.320 0.016 893 4.48 800 10 0.200 0.020 633 6.32 800 20 0.165 0.033 447 8.95 800 50 0.148 0.074 283 14.1 800 100 0.151 0.151 200 20.0 20 200 0.126 0.252 141 28.4 20 500 0.115 0.573 89.4 44.7 20 1K 0.098 0.981 63.3 63.2 20 2K 0.085 1.70 44.7 89.5 20 5K 0.059 2.93 28.3 141 20 10K 0.051 5.16 20.0 200 20 20K 0.043 8.55 14.1 284 20 50K 0.032 15.80 8.94 447 20

www.vishay.com Vishay Revision: 13-Jun-16 1 Document Number: 91000 Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA AR E SUBJECT TO CHANGE WITH OUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employee s, and all persons acting on it s or their behalf (collectivel y, “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 th e products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product , (ii) any and all liability, including without limitation specia l, consequential or incidental damages, and (iii) any and all implied warranties, includ ing warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applicatio ns are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular applic ation. It is the customer’s responsibility to validate tha t a particular product with the prope rties described in the product sp ecification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different ap plications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s term s and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay product s not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain writ ten terms and conditions rega rding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is gran ted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.