7/8" (22.2 mm) Conductive Plastic
Potentiometer, Bushing Mount Type
Model 357
Vishay Spectrol
Document Number: 57059 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 24-Feb-11 21
FEATURES
7/8" diameter single turn
Compact size, advanced design technology
Offer a cost effective solution to your
potentiometer requirements
Suitable model for all industrial applications
Compliant to RoHS Directive 2002/95/EC
ELECTRICAL SPECIFICATIONS
PARAMETER
Resistance Standard range, 1 k to 50 k
Tolerance STANDARD
± 20 %
SPECIAL TO
± 10 %
Linearity (Independent) STANDARD
± 2.0 %
SPECIAL
± 1.0 %
Output Smoothness 0.1 % maximum
TCR ± 600 ppm/°C maximum
Power Rating 1.0 W at 70 °C derated to 0 W at 125 °C
Electrical Travel 340° ± 3°
End Voltage 0.5 % maximum
Dielectric Withstanding Voltage 1000 VRMS, 60 Hz
Insulation Resistance 1000 M, 500 VDC
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation 360° continuous (optional mechanical stops 340° ± 3°)
Mounting 3/8 - 32 UNEF - 2A
Operating Torque Maximum Starting and running 3.68 mNm (0.5 oz. - in)
Shaft Tolerance Maximum
Runout 0.13 mm (0.005")
End Play 0.25 mm (0.010")
Radial Play 0.13 mm (0.005")
Weight 17.5 g (0.62 oz.)
ORDERING INFORMATION/DESCRIPTION
357 B 0 10K 20 % A BO50 0 P 22 e4
MODEL STYLE FEATURES OHMIC
VALUE
TOLERANCE
ON OHMIC VALUE LINEARITY PACKAGING SHAFT TYPE LEAD
Bushing 0Non turn pin and
continuous rotation
From 1K
to 50 K
± 10 %
or
± 20 %
X: ± 2 %
A: ± 1 %
Box of 50
pieces
Shaft diameter
0 = 6.0 mm or
1 = 6.35 mm (1/4")
Finish
1No non turn pin and
continuous rotation
Shaft type
P = Plain
S = Slotted FMF
(from Mounting
face)
2Non turn pin, with
stops on rotation
Range from
12 mm to 75 mm in
1 mm increments
3
No non turn pin
with stops on
rotation
SAP PART NUMBERING GUIDELINES
357B 2 203 M X B25 1S22
MODEL FEATURES OHMIC VALUE TOLERANCE
ON OHMIC VALUE LINEARITY PACKAGING SHAFT TYPE
203 = 20K M: ± 20 %/K: ± 10 % X: ± 2 % Box of 50 pieces
Model 357
Vishay Spectrol 7/8" (22.2 mm) Conductive Plastic
Potentiometer, Bushing Mount Type
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 57059
22 Revision: 24-Feb-11
DIMENSIONS in millimeters
7.92 ± 0.2
Ø 6.35 mm SHAFT VERSION
Ø 6.0 mm SHAFT VARIATION: METRIC
TOLERANCES: LINEAR ± 0.50
ANGULAR ± 2°
SIGNAL
SCHEMATIC
2
3
1
Ø 1.57 ± 0.1
90°
3
1
2
R 4.5
IDENTIFICATION LABEL
10.3
Ø 6 0
- 0.05
Ø 6.345 0
- 0.05
3/8-32 UNEF-2A
1.57
0.64 ± 0.2
22
8.8
1.5
9.4
3 x 3.2
ENVIRONMENTAL SPECIFICATIONS
Vibration 15 g, 10 Hz to 2000 Hz
Shock 50 g
Load Life 1000 h
Storage Temperature Range - 55 °C to + 125 °C
Life 5 000 000 shaft revolutions
Materials
Housing Thermoplastic housing
Bushing Brass, nickel plated
Rear Lid Alumina
Shaft Stainless steel
Terminals Turret type, solder plated
Bushing Mount Hardware
Lockwasher Internal Tooth Steel, nickel plated
Panel Nut Brass nickel plated
MARKING
Unit
Indentification
Manufacturer’s name and model number,
resistance value and tolerance, linearity
specification date code and terminal
identification
RESISTANCE VALUE
Ohms 1K, 2K, 5K, 10K, 20K, 50K
Document Number: 91000 www.vishay.com
Revision: 11-Mar-11 1
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