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
Noise
Electrical Rotation
Power Rating
Section 1
Additional Sections
Insulation Resistance
Dielectric Strength
Absolute Minimum, Resistance
End Voltage
Phasing (CCW End Points)
Taps (Extra)
STANDARD
15
Ω
to 50 kΩ
±3%
±5%
STANDARD
± 0.25 %
± 0.25 %
± 0.25 %
± 0.25 %
100
Ω
ENR
1080° + 4° - 0°
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)
1000 MΩ minimum, 500 V
DC
1000 V
RMS,
60 Hz
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
Additional sections phased to section 1 within ± 1°
Available as special, standard tolerance ± 1°
SPECIAL
150 kΩ
±1%
±3%
SPECIAL
± 0.15 %
± 0.10 %
± 0.075 %
± 0.05 %
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
MODEL
C
MOUNTING
B:
Bushing
S:
Servo
C:
Screw
1
NUMBER OF SECTIONS
From 1 up to 3 max.
50K
RESISTANCE OF EACH SECTION
Beginning with the section nearest
the mounting end
BO1
PACKAGING
Box of 1 piece
SAP PART NUMBERING GUIDELINES
852
MODEL
C
STYLE
1
NUMBER OF SECTIONS
503
OHMIC VALUE SECTION N
O
1
B01
PACKAGING
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For technical questions, contact: sfer@vishay.com
Document Number: 57074
Revision: 22-Mar-07
Model 852
1
13
/
16
" (46 mm) Three Turn Wirewound
Upper Grade Precision Potentiometer
DIMENSIONS
in inches (millimeters)
SERVO MOUNT
1.284
(32.61)
0.301 MIN.
(7.64)
2 1
3
+ 0.000
- 0.001
± 0.015
± 0.010
Vishay Spectrol
BUSHING MOUNT
0.625
(15.88)
± 0.031
± 0.031
0.812
(20.62)
± 0.015
Ø 0.2497
(6.34)
+ 0.0000
TYP.
- 0.0003
0.219 TYP.
(5.56)
0.312
(7.92)
0.062
(1.57)
± 0.015
+ 0.0000
- 0.0010
Ø 1.875
(47.62)
Ø 2.000
(50.80)
Ø 0.4062
(10.32)
Ø 1.812
(46.02)
0.562
(14.27)
± 0.015
0.093
(2.36)
MTG. FACE
0.062
(1.57)
0.073 MIN.
(1.85)
0.062
(1.57)
MTG. FACE
3
/
8
- 32 UNEF - 2A
Ø 0.125
(3.18)
SCREW MOUNT
45°
± 10°
2
1
Ø 0.7500
- 0.0005
(19.05)
+ 0.0000
CW
3
± 0.015
SCHEMATIC
MTG. FACE
0.062
(1.57)
1.062 R MAX.
(26.97)
1
8
- 32 UNC - 2B 0.156
DEEP (3.96) 3
HOLES EQUALLY
SPACED ON A 1.250
Ø (31.75) B.C.
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS ± 0.005 ANGLES ± 2°
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
SERVO
Ball 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)
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)
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 - cm
2
per section maximum
1080° + 10° - 0°
SCREW
Ball bearing
BUSHING
Sleeve bearing
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)
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)
Document Number: 57074
Revision: 22-Mar-07
For technical questions, contact: sfer@vishay.com
www.vishay.com
139
Model 852
Vishay Spectrol
1
13
/
16
" (46 mm) Three Turn Wirewound
Upper Grade Precision Potentiometer
ENVIRONMENTAL SPECIFICATIONS
Vibration
Shock
Salt Spray
Rotational Life
Load Life
Units shall be marked with Spectrol name and
model No, resistance and resistance tolerance,
linearity, terminal identification and date code
Operating Temperature Range
15 g thru 2000 CPS
50 g
96 h
600 000 shaft revolutions
900 h
- 55 °C to + 125 °C
MATERIAL SPECIFICATIONS
Housing
Lids
Shaft
Terminals
Clamp Ring
Bushing Mount Hardware
Lockwasher Internal Tooth:
Panel Nut:
Glass filled, thermoset plastic
Aluminum, anodized
Stainless steel, non-magnetic
non-passivated
Brass, plated for solderability
Stainless steel
Steel, nickel plated
Brass nickel plated
MARKING
Unit
Identification
POWER RATING CHART
(Ratings for cup N
O
1.
Additional cups 75 % of values shown)
6
RESISTANCE ELEMENT DATA
STANDARD
RESISTANCE
VALUES
(Ω)
20
RESO-
LUTION
(%)
0.094
0.074
0.071
0.072
0.064
0.050
0.047
0.035
0.029
0.024
0.017
0.015
0.013
OHMS
PER
TURN
0.019
0.037
0.071
0.145
0.320
0.500
0.948
1.733
2.923
4.797
8.313
14.535
19.987
MAXIMUM MAXIMUM
WIRE
CURRENT VOLTAGE
TEMP.
ACROSS
AT 70 °C
COEF.
COIL
AMBIENT
(ppm/°C)
(V)
(mA)
316
200
141
100
63.2
44.7
31.6
20.0
14.1
10.0
6.32
4.47
3.65
6.33
10.0
14.2
20.0
31.6
44.7
63.3
100
142
200
316
447
548
800
800
180
20
20
20
20
20
20
20
20
20
20
RATED POWER IN W
5
4
3
2
1
0
20
STANDARD 125 °C
40
60
80
100
120
140
160
SPECIAL 150 °C
50
100
200
500
1K
2K
5K
10K
20K
50K
100K
150K
AMBIENT TEMPERATURE IN °C
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140
For technical questions, contact: sfer@vishay.com
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
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1
