Model 302 Vishay Spectrol 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer FEATURES • Screw, servo and bushing mount types available RoHS • Large range of ohmic values: 5 Ω to 85 kΩ COMPLIANT • Extra taps upon request • Gangable up to 6 sections on a same shaft ELECTRICAL SPECIFICATIONS PARAMETER SPECIAL 85 kΩ ±1% ±3% STANDARD 5 Ω to 50 kΩ ±3% ±5% Total Resistance: Tolerance 50 Ω and Above Below 50 Ω Linearity x total resistance or 0.5 Ω whichever is greater Absolute Minimum Resistance Linearity x total applied voltage for total resistance above 20 Ω, 2.0 % of total applied voltage for 20 Ω 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 Ω ENR End Voltage Linearity (Independent) 5 Ω to 50 Ω 50 Ω to 200 Ω 200 Ω to 1 kΩ 1 kΩ to 10 kΩ 10 kΩ and Above Noise 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 MΩ minimum 500 VDC Dielectric Strength 1000 VRMS, 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/DESCRIPTION 302 C 1 500 BO1 MODEL MOUNTING TYPE NUMBER OF SECTIONS OHMIC VALUE PACKAGING B: Bushing S: Servo C: Screw From 1 up to 6 (Max.) 500 Ω 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 302 S 2 103 202 BO1 MODEL MOUNTING TYPE NUMBER OF SECTIONS OHMIC VALUE OHMIC VALUE PACKAGING Section NO 1 103 = 10K Section NO 2 202 = 2K Box of 1 piece S: Servo Document Number: 57057 Revision: 28-Jun-07 For technical questions, contact: [email protected] www.vishay.com 103 Model 302 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer Vishay Spectrol DIMENSIONS in inches (millimeters) ± 0.010 SCREW MOUNT: 302C ± 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 Ø 0.2497 - 0.0003 (6.34) MTG. FACE 1.140 R MAX. (28.96) Ø 1.250 B.C (31.75) SERVO MOUNT: 302S ± 0.010 1 0.831 (21.11) BUSHING MOUNT: 302B ± 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: www.vishay.com 104 2.0 g - cm2 per section maximum 4.0 oz. (113.40 g) 1.2 oz. (34.02 g) For technical questions, contact: [email protected] Document Number: 57057 Revision: 28-Jun-07 Model 302 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer Vishay Spectrol MATERIAL SPECIFICATIONS ENVIRONMENTAL SPECIFICATIONS Housing and Lids Vibration Aluminum, anodized 15 g thru 2000 Hz Shaft and Clamp Rings Stainless steel, non-magnetic non-passivated Shock 50 g Terminals Brass, plated for solderability Salt Spray 96 h Bushing Mount Hardware Lockwasher Internal Tooth: Panel Nut: Rotational Life Steel, nickel plated Brass, nickel plated 1 million 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 POWER RATING CHART RESISTANCE ELEMENT DATA (Ratings for cup No. 1. Additional cups 75 % of values shown) RATED POWER IN W RESISTANCE VALUES (Ω) 8 6 4 SPECIAL 150 °C 2 0 20 STANDARD 125 °C 40 60 80 100 120 140 AMBIENT TEMPERATURE IN °C Document Number: 57057 Revision: 28-Jun-07 160 RESOLUTION (%) MAXIMUM MAXIMUM OHMS CURRENT VOLTAGE AT 40 °C ACROSS PER COIL TURN AMBIENT (V) (mA) 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 For technical questions, contact: [email protected] www.vishay.com 105 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