852 VISHAY

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www.vishay.com Vishay Spectrol Revision: 14-Oct-2022 1 Document Number: 57074 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 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 screw mount version
  • Gangable up to 3 sections
  • Extra taps available upon request QUICK REFERENCE DATA Sensor type ROTATIONAL, multi turn wirewound Output type Output by turrets Market appliance Professional Dimensions 1 13/16" (46 mm) ELECTRICAL SPECIFICATIONS PARAMETER Total resistance Tolerance: 100 Ω and above Below 100 Ω STANDARD 15 Ω to 50 kΩ ± 3 % ± 5 % SPECIAL 150 kΩ ± 1 % ± 3 % Linearity (independent) 15 Ω to 1 kΩ 1 kΩ to 5 kΩ 5 kΩ and above STANDARD ± 0.25 % ± 0.25 % ± 0.25 % SPECIAL ± 0.15 % ± 0.10 % ± 0.1 % (lower linearity available on request) Noise 100 Ω ENR 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 M Ω minimum, 500 V DC Dielectric strength 1000 V RMS, 60 Hz Absolute minimum, resistance Line arity x total resistance or 0.5 Ω, whichever is greater End voltage Linearity x total applied voltage for total resistance above 20 Ω, 2.0 % of total applied voltage for 20 Ω and below 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 datasheet 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

MODEL STYLE NUMBER OF SECTION OHMIC VALUE SECTION N o 1

www.vishay.com Vishay Spectrol Revision: 14-Oct-2022 2 Document Number: 57074 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 DIMENSIONS in inches (millimeters) MECHANICAL SPECIFICATIONS PARAMETER Rotation 1080° +10° -0° Bearing type SERVO Ball bearing SCREW Ball bearing BUSHING Sleeve bearing Torque (maximums) Servo or screw section 1 Bushing section 1 Each additional section 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) Mechanical runouts (maximums): Shaft runout (TIR/in) Pilot dia. runout (TIR) Lateral runout (TIR) Shaft end play Shaft radial play 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) Weight (maximums) Single section Each additional section Stop strength 3.5 oz. (99.2 g) 2.7 oz. (76.5 g) 1000 oz. - in, static (72 kg - cm) Ganging 3 sections maximum, terminal alignment, added sections within ± 10° of section 1 terminals Moment of inertia 5.5 g - cm 2 per section maximum 1.284 (32.61) ± 0.010 0.625 (15.88) ± 0.031 Ø 0.2497 TYP. (6.34) + 0.0000 - 0.0003 Ø 2.000 (50.80) Ø 1.875 (47.62) + 0.000 - 0.001 0.062 (1.57) 0.073 MIN. (1.85) 0.093 (2.36) MTG. FACE 0.062 (1.57) Ø 1.812 (46.02) ± 0.015 MTG. FACE ± 0.015 0.219 TYP. (5.56) ± 0.015 0.812 (20.62) ± 0.031 0.312 (7.92) 0.062 (1.57) ± 0.015 Ø 0.4062 (10.32) + 0.0000 - 0.0010 0.562 (14.27) 3/8 - 32 UNEF - 2A Ø 0.125 (3.18) 45° ± 10° 8 - 32 UNC - 2B 0.156 DEEP (3.96) 3 HOLES EQUALLY SPACED ON A 1.250 Ø (31.75) B.C. ± 0.015 0.062 (1.57) MTG. FACE Ø 0.7500 (19.05) + 0.0000 - 0.0005 BUSHING MOUNT: 852B/852-1SERVO MOUNT: 852S/852-2 SCREW MOUNT: 852C/852-3 0.301 MIN. (7.64) 123 1.062 R MAX. (26.97) 1TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS ± 0.005 ANGLES ± 2° CW SCHEMATIC ADD 0.992 ± 0.010 (25.20) FOR EACH ADDITIONAL SECTION

www.vishay.com Vishay Spectrol Revision: 14-Oct-2022 3 Document Number: 57074 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. Additional cups 75 % of values shown) MATERIAL SPECIFICATIONS Housing 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 Units shall be marked with Spectrol name and model No, resistance and resistance tolerance, linearity, terminal identification and date code. Example of a marking for a standard part: 852-22203503 ENVIRONMENTAL SPECIFICATIONS Vibration 15 g thru 2000 CPS Shock 50 g Salt spray 96 h Rotational life 600 000 shaft revolutions Load life 900 h Operating temperature range -55 °C to +125 °C 100 1000 10000 20 40 60 80 100 120 140 160 Axis Title 1st line 2nd line 2nd line Rated Power (W) Ambient Temperature (°C) Standard 125 °C Special 150 °C RESISTANCE ELEMENT DATA STANDARD RESISTANCE VALUES (Ω) RESO- LUTION (%) OHMS PER TURN MAXIMUM CURRENT AT 70 °C AMBIENT (mA) MAXIMUM VOLTAGE ACROSS COIL (V) WIRE TEMP. COEF. (ppm/°C) 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

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