Model 302 www.vishay.com Vishay Spectrol 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: for definitions of compliance please see www.vishay.com/doc?99912 QUICK REFERENCE DATA Sensor type Output type Market appliance ROTATIONAL, single turn wirewound Output by turrets Professional Dimensions 2" (50.8 mm) ELECTRICAL SPECIFICATIONS PARAMETER Total resistance: Tolerance 50 and above Below 50 Absolute minimum resistance SPECIAL STANDARD 85 k 5 to 50 k ±1% ±3% ±3% ±5% Linearity x total resistance or 0.5 whichever is greater Linearity x total applied voltage for total resistance above 20 , 2.0 % of total applied voltage for 20 and below BEST PRACTICAL STANDARD ± 0.50 % ± 1.0 % ± 0.35 % ± 0.50 % ± 0.20 % ± 0.25 % ± 0.15 % ± 0.25 % ± 0.10 % ± 0.25 % 100 ENR 350° ± 2° End voltage Linearity (independent) 5 to 50 50 to 200 200 to 1 k 1 k to 10 k 10 k and above Noise Electrical angle Power rating Section 1: 4.0 W Additional sections Insulation resistance Dielectric strength Taps (extra) Phasing (CCW end points) 70 °C ambient derated to zero at 125 °C 75 % of the rating of section 1 (3.0 W at 70 °C) 1000 M minimum 500 VDC 1000 VRMS, 60 Hz 21 available as special, standard tolerance ± 1° Additional sections phased to section 1 within ± 1° ORDERING INFORMATION/DESCRIPTION 302 C 1 501 BO1 MODEL MOUNTING TYPE NUMBER OF SECTIONS OHMIC VALUE PACKAGING B: Bushing S: Servo C: Screw From 1 up to 6 (max.) 500 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 302 S 2 103 202 BO1 MODEL MOUNTING TYPE NUMBER OF SECTIONS OHMIC VALUE OHMIC VALUE PACKAGING Section N° 1 103 = 10K Section N° 2 202 = 2K Box of 1 piece S: Servo Revision: 27-Mar-15 Document Number: 57057 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 302 www.vishay.com Vishay Spectrol DIMENSIONS in inches (millimeters) ± 0.010 SCREW MOUNT: 302C/302-3 ± 0.031 0.800 (20.32) 1 0.625 (15.88) 15° TYP. 3 0.062 (1.57) 0.312 MIN. (7.92) 1 2 1.200 R MAX. (30.48) ± 5° 45° + 0.0000 - 0.0005 Ø 0.7500 (19.05) 8 - 32 UNC - 2B 0.187 DEEP (4.75) 3 HOLES EQUALLY SPACED ± 0.015 Ø 2.000 (50.80) ± 0.005 + 0.0000 0.2497 - 0.0003 Ø (6.34) MTG. FACE 1.140 R MAX. (28.96) Ø 1.250 B.C (31.75) SERVO MOUNT: 302S/302-2 ± 0.010 1 0.831 (21.11) BUSHING MOUNT: 302B/302-1 ± 0.031 ± 0.010 0.625 (15.88) 0.705 (17.91) 0.073 MIN. (1.85) 0.093 (2.36) ± 0.031 0.875 (22.22) 0.239 MIN. (6.07) ± 0.015 0.340 MIN. (8.64) 0.062 (1.57) + 0.0000 Ø 0.2497 - 0.0003 (6.34) 0.375 (9.52) 0.062 (1.57) 3/ 8- 32 UNEF 2A + 0.0000 Ø 1.8750 - 0.0005 (47.62) ± 0.015 Ø 2.000 (50.80) + 0.0000 - 0.0010 Ø 2.000 (50.80) Ø 0.4062 (10.32) ± 0.015 Ø 2.000 (50.80) ± 0.002 Ø 1.812 MAX. (46.02) 1 + 0.0000 MTG. FACE Ø 0.2497 - 0.0003 (6.34) MTG. FACE ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° 2 CW 3 1 SCHEMATIC MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing type Ganging 360° (continuous) Servo and screw mount: ball Bushing mount: sleeve 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 Weight (maximums) Single section: Each additional section: Revision: 27-Mar-15 2.0 g - cm2 per section maximum 4.0 oz. (113.40 g) 1.2 oz. (34.02 g) Document Number: 57057 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 302 www.vishay.com Vishay Spectrol MATERIAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS Housing and lids Vibration Aluminum, anodized Shaft and clamp rings Stainless steel, non-magnetic non-passivated Shock Terminals Brass, plated for solderability Salt spray 15 g thru 2000 Hz 50 g 96 h Rotational life Bushing mount hardware Lockwasher internal tooth: Panel nut: Steel, nickel plated Brass, nickel plated 1 million shaft revolutions 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 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 Unit identification POWER RATING CHART RESISTANCE ELEMENT DATA RATED POWER IN W (Ratings for cup No. 1. Additional cups 75 % of values shown) 8 6 4 SPECIAL 150 °C 2 0 20 STANDARD 125 °C 40 60 80 100 120 140 AMBIENT TEMPERATURE IN °C Revision: 27-Mar-15 160 MAXIMUM MAXIMUM WIRE RESISTANCE RESO- OHMS CURRENT VOLTAGE TEMP. VALUES LUTION PER AT 40 °C ACROSS COEF. COIL () (%) TURN AMBIENT (ppm/°C) (V) (mA) 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 Document Number: 57057 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