MODEL302

Model 302 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 Ω to 85 kΩ • Extra taps upon request • Gangable up to 6 sections on a same shaft RoHS COMPLIANT ELECTRICAL SPECIFICATIONS PARAMETER Total Resistance: Tolerance 50 Ω and Above Below 50 Ω Absolute Minimum Resistance 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 Power Rating Section 1: 4.0 W Additional Sections Insulation Resistance Dielectric Strength Taps (Extra) Phasing (CCW End Points) STANDARD 5 Ω to 50 kΩ ±3% ±5% SPECIAL 85 kΩ ±1% ±3% Linearity x total resistance or 0.5 Ω whichever is greater 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 350° ± 2° 70 °C ambient derated to zero at 125 °C 75 % of the rating of section 1 (3.0 W at 70 °C) 1000 MΩ 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 MODEL C MOUNTING TYPE B: Bushing S: Servo C: Screw 1 NUMBER OF SECTIONS From 1 up to 6 (Max.) 500 OHMIC VALUE 500 Ω 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 302 MODEL S MOUNTING TYPE S: Servo 2 NUMBER OF SECTIONS 103 OHMIC VALUE Section NO 1 103 = 10K For technical questions, contact: sfer@vishay.com 202 OHMIC VALUE Section NO 2 202 = 2K BO1 PACKAGING Box of 1 piece www.vishay.com 103 Document Number: 57057 Revision: 28-Jun-07 Model 302 Vishay Spectrol 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer DIMENSIONS in inches (millimeters) ± 0.010 1 0.800 (20.32) 0.625 (15.88) 0.062 (1.57) ± 0.031 SCREW MOUNT: 302C 15° TYP. 3 2 1.200 R MAX. (30.48) 8 - 32 UNC - 2B 0.187 DEEP (4.75) 3 HOLES EQUALLY SPACED ± 0.005 1 0.312 MIN. (7.92) ± 5° + 0.0000 - 0.0005 45° Ø 0.7500 (19.05) Ø 2.000 (50.80) ± 0.015 MTG. FACE Ø 0.2497 - 0.0003 (6.34) ± 0.031 + 0.0000 1.140 R MAX. (28.96) Ø 1.250 B.C (31.75) SERVO MOUNT: 302S ± 0.010 BUSHING MOUNT: 302B ± 0.010 ± 0.031 1 0.831 (21.11) 0.093 (2.36) 0.062 (1.57) 0.625 (15.88) 0.073 MIN. (1.85) 0.340 MIN. (8.64) 0.239 MIN. (6.07) 0.705 (17.91) 0.875 (22.22) ± 0.015 + 0.0000 0.375 (9.52) 0.062 (1.57) 3/ 8- Ø 0.2497 - 0.0003 (6.34) + 0.0000 32 UNEF 2A ± 0.015 Ø 2.000 (50.80) Ø 1.8750 - 0.0005 (47.62) Ø 2.000 (50.80) + 0.0000 - 0.0010 Ø 0.4062 (10.32) ± 0.015 Ø 2.000 (50.80) ± 0.002 Ø 1.812 MAX. (46.02) 1 MTG. FACE MTG. FACE + 0.0000 Ø 0.2497 - 0.0003 (6.34) 2 1 CW 3 ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° SCHEMATIC MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing Type Ganging Torque (Maximums) Servo and Screw (1 Section) Bushing (1 Section) Each added Section Mechanical Runouts (Maximums) Shaft TIR/in Pilot dia TIR Lateral TIR Shaft End Play Shaft Radial Play Moment of Inertia Weight (Maximums) Single Section: Each Additional Section: www.vishay.com 104 360° (continuous) Servo and screw mount: Ball Bushing mount: Sleeve 6 sections maximum, terminal alignment, added sections, within ± 10° of section 1 terminals 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) 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) 2.0 g - cm2 per section maximum 4.0 oz. (113.40 g) 1.2 oz. (34.02 g) For technical questions, contact: sfer@vishay.com Document Number: 57057 Revision: 28-Jun-07 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) 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) Model 302 2" (50.8 mm) Single Turn Wirewound Precision Potentiometer MATERIAL SPECIFICATIONS Housing and Lids Shaft and Clamp Rings Terminals Bushing Mount Hardware Lockwasher Internal Tooth: Panel Nut: Aluminum, anodized Stainless steel, non-magnetic non-passivated Brass, plated for solderability Steel, nickel plated Brass, nickel plated Vishay Spectrol ENVIRONMENTAL SPECIFICATIONS Vibration Shock Salt Spray Rotational Life Temperature Range 15 g thru 2000 Hz 50 g 96 h 1 million shaft revolutions - 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 (Ratings for cup No. 1. Additional cups 75 % of values shown) RESISTANCE ELEMENT DATA RESISTANCE VALUES (Ω) RESOLUTION (%) 0.320 0.200 0.165 0.148 0.151 0.126 0.115 0.098 0.085 0.059 0.051 0.043 0.032 MAXIMUM MAXIMUM OHMS CURRENT VOLTAGE AT 40 °C ACROSS PER COIL TURN AMBIENT (V) (mA) 0.016 0.020 0.033 0.074 0.151 0.252 0.573 0.981 1.70 2.93 5.16 8.55 15.80 893 633 447 283 200 141 89.4 63.3 44.7 28.3 20.0 14.1 8.94 4.48 6.32 8.95 14.1 20.0 28.4 44.7 63.2 89.5 141 200 284 447 WIRE TEMP. COEF. (ppm/°C) 800 800 800 800 20 20 20 20 20 20 20 20 20 RATED POWER IN W 5 8 6 4 SPECIAL 150 °C 10 20 50 100 200 500 1K 2K 40 60 80 100 120 140 160 2 0 20 STANDARD 125 °C 5K 10K 20K 50K AMBIENT TEMPERATURE IN °C Document Number: 57057 Revision: 28-Jun-07 For technical questions, contact: sfer@vishay.com 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