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: 15-Nov-07 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
RoHS
COMPLIANT
ELECTRICAL SPECIFICATIONS
PARAMETER
Resistance Standard range, 1 kΩ to 50 kΩ
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 MΩ, 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 (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: 15-Nov-07
DIMENSIONS in millimeters
Vishay
90.0°
REAR LID
MARKINGS ON
THIS FACE
R 45
MOUNTING
SURFACE
22.0 (FMF)
3.2
9.3 8.8
1.5
0.7
0.4 x 45°
0.8
1.6
0.8
Ø 8.2
Ø 6.35
+ 0.0
- 0.05
3
/
8
- 32 UNEF - 2A
Ø 9.5
7.92
Ø 1.56
10.3
Ø 6.35
Ø 6.00 + 0.0
- 0.05
Ø 6.35 mm SHAFT VERSION
Ø 6.0 mm SHAFT VARIATION: METRIC
TOLERANCES: LINEAR ± 0.50
ANGULAR ± 2°
Ø 22.2
HOUSING
MARKINGS ON
THIS FACE
CW
SCHEMATIC
2
3
1
ENVIRONMENTAL SPECIFICATIONS
Vibration 15 g, 10 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: 18-Jul-08 1
Disclaimer
Legal Disclaimer Notice
Vishay
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.
