Model 852 Vishay Spectrol 1 13/16" (46 mm) Three Turn Wirewound Upper Grade Precision Potentiometer FEATURES • Large range of ohmic values: 15 Ω to 50 kΩ • Bushing mount, servo mount and srew mount version • Gangable up to 3 sections • Extra taps available upon request ELECTRICAL SPECIFICATIONS PARAMETER Total Resistance Tolerance: 100 Ω and Above Below 100 Ω Linearity (Independent) 15 Ω to 1 kΩ 1 kΩ to 5 kΩ 5 kΩ to 25 kΩ 25 kΩ and Above STANDARD 15 Ω to 50 kΩ ±3% ±5% SPECIAL 150 kΩ ±1% ±3% STANDARD ± 0.25 % ± 0.25 % ± 0.25 % ± 0.25 % SPECIAL ± 0.15 % ± 0.10 % ± 0.075 % ± 0.05 % 100 Ω ENR Noise Electrical Rotation 1080° + 4° - 0° Power Rating Section 1 Additional Sections 2.0 W at 70 °C ambient, derated to zero at 125 °C 75 % of the rating of section 1 (1.5 W at 70 °C) Insulation Resistance 1000 MΩ minimum, 500 VDC Dielectric Strength 1000 VRMS, 60 Hz 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 End Voltage Phasing (CCW End Points) Additional sections phased to section 1 within ± 1° Taps (Extra) Available as special, standard tolerance ± 1° ORDERING INFORMATION/DESCRIPTION The Model 852 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: 852 C 1 50K BO1 MODEL MOUNTING NUMBER OF SECTIONS RESISTANCE OF EACH SECTION PACKAGING B: Bushing S: Servo C: Screw From 1 up to 3 max. Beginning with the section nearest the mounting end Box of 1 piece SAP PART NUMBERING GUIDELINES 852 C 1 503 B01 MODEL STYLE NUMBER OF SECTIONS OHMIC VALUE SECTION NO 1 PACKAGING www.vishay.com 138 For technical questions, contact: [email protected] Document Number: 57074 Revision: 22-Mar-07 Model 852 1 13/16" (46 mm) Three Turn Wirewound Upper Grade Precision Potentiometer Vishay Spectrol DIMENSIONS in inches (millimeters) SERVO MOUNT ± 0.010 1.284 (32.61) BUSHING MOUNT ± 0.031 ± 0.031 0.812 (20.62) 0.625 (15.88) Ø 0.2497 (6.34) 2 1 0.312 (7.92) ± 0.015 + 0.0000 TYP. - 0.0003 0.301 MIN. (7.64) 0.219 TYP. (5.56) 0.062 (1.57) 3 + 0.0000 - 0.0010 + 0.000 - 0.001 Ø 0.4062 (10.32) Ø 1.875 (47.62) ± 0.015 Ø 1.812 (46.02) ± 0.015 Ø 2.000 (50.80) 0.562 (14.27) ± 0.015 0.093 (2.36) MTG. FACE 0.062 (1.57) MTG. FACE 0.062 (1.57) 0.073 MIN. (1.85) 3/ 8 - 32 UNEF - 2A Ø 0.125 (3.18) SCREW MOUNT 45° ± 10° + 0.0000 2 Ø 0.7500 - 0.0005 (19.05) CW ± 0.015 3 1 SCHEMATIC MTG. FACE 0.062 (1.57) 8 - 32 UNC - 2B 0.156 DEEP (3.96) 3 HOLES EQUALLY SPACED ON A 1.250 Ø (31.75) B.C. 1.062 R MAX. (26.97) TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° 1 ADD 0.992 ± 0.010 (25.20) FOR EACH ADDITIONAL SECTION MECHANICAL SPECIFICATIONS PARAMETER Rotation Bearing Type Torque (Maximums) Servo or Screw Section 1 Bushing Section 1 Each Additional Section Mechanical Runouts (Maximums): Shaft Runout (TIR/in) Pilot Dia. Runout (TIR) Lateral Runout (TIR) Shaft End Play Shaft Radial Play Weight (Maximums) Single Section Each Additional Section Stop Strength Ganging Moment of Inertia Document Number: 57074 Revision: 22-Mar-07 1080° + 10° - 0° SERVO Ball bearing SCREW Ball bearing BUSHING Sleeve bearing STARTING 1.20 oz. - in (86.4 g - cm) 1.75 oz. - in (126.0 g - cm) 0.80 oz. - in (57.6 g - cm) RUNNING 0.80 oz. - in (57.6 g - cm) 1.25 oz. - in (90.0 g - cm) 0.60 oz. - cm (43.2 g - cm) SERVO/SCREW 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) 3.5 oz. (99.2 g) 2.7 oz. (76.5 g) 1000 oz. - in, static (72 kg - cm) 3 sections maximum, terminal alignment, added sections within ± 10° of section 1 terminals 5.5 g - cm2 per section maximum For technical questions, contact: [email protected] www.vishay.com 139 Model 852 1 13/16" (46 mm) Three Turn Wirewound Upper Grade Precision Potentiometer Vishay Spectrol MATERIAL SPECIFICATIONS Housing ENVIRONMENTAL SPECIFICATIONS Glass filled, thermoset plastic Lids Aluminum, anodized Shaft Stainless steel, non-magnetic non-passivated Terminals Brass, plated for solderability Clamp Ring Stainless steel Bushing Mount Hardware Lockwasher Internal Tooth: Panel Nut: Steel, nickel plated Brass nickel plated MARKING Unit Identification 15 g thru 2000 CPS Shock 50 g Salt Spray 96 h Rotational Life 600 000 shaft revolutions Load Life Units shall be marked with Spectrol name and model No, resistance and resistance tolerance, linearity, terminal identification and date code POWER RATING CHART 900 h Operating Temperature Range 6 4 3 1 0 20 SPECIAL 150 °C STANDARD 125 °C 40 60 80 100 120 140 AMBIENT TEMPERATURE IN °C www.vishay.com 140 160 MAXIMUM MAXIMUM WIRE CURRENT VOLTAGE TEMP. ACROSS AT 70 °C COEF. COIL AMBIENT (ppm/°C) (V) (mA) STANDARD RESISTANCE VALUES (Ω) RESOLUTION (%) OHMS PER TURN 20 0.094 0.019 316 6.33 800 50 0.074 0.037 200 10.0 800 100 0.071 0.071 141 14.2 180 200 0.072 0.145 100 20.0 20 500 0.064 0.320 63.2 31.6 20 1K 0.050 0.500 44.7 44.7 20 2K 0.047 0.948 31.6 63.3 20 5K 0.035 1.733 20.0 100 20 10K 0.029 2.923 14.1 142 20 20K 0.024 4.797 10.0 200 20 50K 0.017 8.313 6.32 316 20 100K 0.015 14.535 4.47 447 20 150K 0.013 19.987 3.65 548 20 5 2 - 55 °C to + 125 °C RESISTANCE ELEMENT DATA (Ratings for cup NO 1. Additional cups 75 % of values shown) RATED POWER IN W Vibration For technical questions, contact: [email protected] Document Number: 57074 Revision: 22-Mar-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