Model 502
Vishay Spectrol
(22.2 mm) Ten-Turn Wirewound
Upper Grade Precision Potentiometer
FEATURES
•
Bushing mount and servo mount designs are available
•
Large ohmic value range: 15
Ω
to 100 kΩ
•
Dual gang configuration
•
Improved linearity available
•
Long life > 2 million shaft revolutions
7
/
8
"
ELECTRICAL SPECIFICATIONS
PARAMETER
Total Resistance
Tolerance: 100
Ω
and above
Below 100
Ω
Linearity (Independent)
15
Ω
to 50
Ω
50
Ω
to 1 kΩ
1 kΩ to 5 kΩ
5 kΩ and Above
Noise
Electrical Rotation
Power Rating:
Additional Sections
Insulation Resistance
Dielectric Strength
Absolute Minimum Resistance
End Voltage
Phasing (CCW End Points)
Taps (Extra)
STANDARD
15
Ω
to 100 kΩ
±3%
±5%
STANDARD
± 0.25 %
± 0.25 %
± 0.25 %
± 0.25 %
100
Ω
ENR
3600° + 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 applied voltage for 20
Ω
and below
Additional sections phased to section 1 within ± 2°
54 available as special, standard tolerance ± 2°
SPECIAL
15
Ω
to 150 kΩ
±1%
±3%
BEST PRACTICAL
± 0.15 %
± 0.10 %
± 0.075 %
± 0.05 %
ORDERING INFORMATION/DESCRIPTION
The Model 502 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:
502
MODEL
S
STYLE
B:
Bushing
S:
Servo
2
NUMBER OF
SECTIONS
1
or
2
10K
20K
BO1
PACKAGING
Box of 1 piece
TOTAL RESISTANCE OF EACH
SECTION
Beginning with the section nearest
the mounting end
Other characteristics will be standard as described on this data sheet. If special characteristics are required, such as: special linearity
tolerance, special resistance tolerance, extra taps, non-linear functions, etc., please state these on your order and allow additional lead time
for delivery.
SAP PART NUMBERING GUIDELINES
502
MODEL
S
STYLE
2
NUMBER OF
SECTIONS
103
OHMIC VALUE
SECTION N
o
1
203
OHMIC VALUE
SECTION N
o
2
B01
PACKAGING
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120
For technical questions, contact: sfer@vishay.com
Document Number: 57064
Revision: 12-Jul-07
Model 502
(22.2 mm) Ten-Turn Wirewound
Upper Grade Precision Potentiometer
DIMENSIONS
in inches (millimeters)
BUSHING MOUNT
1
± 0.010
7
/
8
"
Vishay Spectrol
1.448
(36.78)
0.168 MIN.
(4.27)
0.312
(7.92)
3
0.687
(17.45)
± 0.015
± 0.031
2
± 0.015
1
Ø 0.1248
(3.17)
+ 0.0000
TYP.
- 0.0003
45°
± 10°
0.172 TYP.
(4.37)
± 0.015
Ø 0.875
(22.22)
0.594 R
(15.09)
MAX.
± 0.015
0.062
(1.57)
MTG. FACE
1
/
4
Ø 0.281
- 0.001
(7.14)
- 32 UNEF 2A
+ 0.000
SERVO MOUNT
1
1.536
(39.01)
± 0.010
± 0.031
0.257 MIN.
(6.53)
0.375
(9.52)
0.057 MIN.
(1.45)
0.062
(1.57)
0.062
(1.57)
2
1
3
+ 0.0000
- 0.0005
2
Ø 0.875
(22.22)
CW
3
1
ADD 1.282 ± 0.002 (32.56) FOR EACH
ADDITIONAL SECTION
0.750 MAX.
(19.05)
Ø 0.7500
(19.05)
1
SCHEMATIC
MTG. FACE
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS ± 0.005 ANGLES ± 2°
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
Bearing Type
Torque (Maximums)
Servo Section 1
Bushing Section 1
Each Additional Section
Mechanical Runout (Maximums):
Shaft Runout (TIR)
Pilot Dia. Runout (TIR)
Lateral Runout (TIR)
Shaft End Play
Shaft Radial Play
Weight:
Single Section
Each Additional Section
Stop Strength
Ganging
Moment of Inertia
Document Number: 57064
Revision: 12-Jul-07
SERVO
Ball bearing
STARTING
0.4 oz. - in (28.8 g - cm)
0.5 oz. - in (36.0 g - cm)
0.3 oz. - in (21.6 g - cm)
SERVO
0.002" (0.05 cm)
0.002" (0.05 cm)
0.002" (0.05 cm)
0.005" (0.13 cm)
0.002" (0.05 cm)
3600° + 10° - 0°
BUSHING MOUNT
Sleeve bearing
RUNNING
0.3 oz. - in (21.6 g - cm)
0.4 oz. - in (28.8 g - cm)
0.2 oz. - in (14.4 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)
1.20 oz. (34.0 g)
0.80 oz. (22.7 g)
100 oz. - in, static (7.2 kg - cm)
2 sections, terminal alignment, added sections,
within ± 10° of section 1 terminals
0.45 g - cm
2
per section maximum
For technical questions, contact: sfer@vishay.com
www.vishay.com
121
Model 502
Vishay Spectrol
(22.2 mm) Ten-Turn Wirewound
Upper Grade Precision Potentiometer
ENVIRONMENTAL SPECIFICATIONS
Vibration
15 g thru 2000 CPS
7
/ "
8
MATERIAL SPECIFICATIONS
Housing
Lids
Shaft
Terminals
Clamp Ring
Bushing Mounting Hardware
Lockwasher Internal Tooth:
Panel Nut:
Phenolic (black) glass filled
Aluminum, anodized
Stainless steel, non-magnetic,
non-passivated
Brass, plated for solderability
Stainless steel
Steel, nickel plated
Brass, nickel plated
Shock
50 g
Salt Spray
96 h
Rotational Life
2 million shaft revolutions
MARKING
Unit
Identification
Units shall be marked with Vishay spectrol
name and model no, resistance and resistance
tolerance, linearity, terminal identification, and
date code
Load Life
900 h
Operating Temperature Range
- 55 °C to + 125 °C
POWER RATING CHART
(Ratings for cup No. 1.
Additional cups 75 % of values shown)
RESISTANCE ELEMENT DATA
STANDARD
RESISTANCE
VALUES
(Ω)
15
20
50
100
200
500
SPECIAL 150 °C
6
5
RESO-
LUTION
(%)
0.088
0.066
0.050
0.050
0.049
0.037
0.034
0.029
0.023
0.017
0.016
0.011
0.010
0.010
OHMS
PER
TURN
0.013
0.013
0.025
0.050
0.098
0.185
0.339
0.571
1.173
1.731
3.142
5.639
10.325
14.170
MAXIMUM MAXIMUM
CURRENT VOLTAGE
ACROSS
AT 70 °C
COIL
AMBIENT
(V)
(mA)
365
316
200
141
100
63.2
44.7
31.6
20.0
14.1
10.0
6.32
4.47
3.65
5.48
6.32
10.0
14.1
20.0
31.6
44.7
63.2
100
141
200
316
447
548
WIRE
TEMP.
COEF.
(ppm/°C)
800
800
800
180
20
20
20
20
20
20
20
20
20
20
RATED POWER IN W
4
3
2
1
0
1K
2K
5K
10K
STANDARD 125 °C
20
40
60
80
100
120
140
160
20K
50K
100K
150K
AMBIENT TEMPERATURE IN °C
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122
For technical questions, contact: sfer@vishay.com
Document Number: 57064
Revision: 12-Jul-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
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