Model 302
www.vishay.com
Vishay Spectrol
2" (50.8 mm) Single Turn Wirewound
Precision Potentiometer
FEATURES
• Screw, servo and bushing mount types
available
• Large range of ohmic values: 5
to 85 k
• Extra taps upon request
• Gangable up to 6 sections on a same shaft
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
QUICK REFERENCE DATA
Sensor type
Output type
Market appliance
Dimensions
ROTATIONAL, single turn wirewound
Output by turrets
Professional
2" (50.8 mm)
ELECTRICAL SPECIFICATIONS
PARAMETER
Total resistance:
Tolerance 50
and above
Below 50
Absolute minimum resistance
End voltage
Linearity (independent)
5
to 50
50
to 200
200
to 1 k
1 k to 10 k
10 k and above
Noise
Electrical angle
Power rating
Section 1: 4.0 W
Additional sections
Insulation resistance
Dielectric strength
Taps (extra)
Phasing (CCW end points)
STANDARD
5
to 50 k
±3%
±5%
SPECIAL
85 k
±1%
±3%
Linearity x total resistance or 0.5
whichever is greater
Linearity x total applied voltage for total resistance above 20
,
2.0 % of total applied voltage
for 20
and below
STANDARD
± 1.0 %
± 0.50 %
± 0.25 %
± 0.25 %
± 0.25 %
100
ENR
350° ± 2°
70 °C ambient derated to zero at 125 °C
75 % of the rating of section 1 (3.0 W at 70 °C)
1000 M minimum 500 V
DC
1000 V
RMS
, 60 Hz
21 available as special, standard tolerance ± 1°
Additional sections phased to section 1 within ± 1°
BEST PRACTICAL
± 0.50 %
± 0.35 %
± 0.20 %
± 0.15 %
± 0.10 %
ORDERING INFORMATION
3
0
2
B
1
2
0
3
2
0
3
X
X
X
X
MODEL
302
STYLE
B:
bushing
S:
servo
C:
screw
GANGS
1
2
3
4
OHMIC VALUE
GANGS N
o
1
470
= 47
222
= 2.200
103
= 10 k
For ohmic value
range see electrical
specification
OHMIC VALUE
GANGS N
o
2
470
= 47
222
= 2.200
103
= 10 k
For ohmic value
range see electrical
specification
SPECIAL REQUEST
xxxx
Revision: 22-Nov-16
Document Number: 57057
1
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
Model 302
www.vishay.com
Vishay Spectrol
PART NUMBER DESCRIPTION
(for information only)
302-
MODEL
1
STYLE
B:
1
S:
2
C:
3
1
GANGS
103
OHMIC VALUE
GANGS N
o
1
203
OHMIC VALUE
GANGS N
o
2
xxxx
SPECIAL
DIMENSIONS
in inches (millimeters)
± 0.010
1
0.800
(20.32)
0.625
(15.88)
0.062
(1.57)
± 0.031
SCREW MOUNT: 302C/302-3
15° TYP.
3
2
1.200 R MAX.
(30.48)
8 - 32 UNC - 2B
0.187 DEEP
(4.75) 3 HOLES
EQUALLY
SPACED
± 0.005
1
0.312 MIN.
(7.92)
± 5°
+ 0.0000
- 0.0005
45°
Ø 0.7500
(19.05)
Ø 2.000
(50.80)
± 0.015
MTG. FACE
Ø 0.2497
- 0.0003
(6.34)
± 0.031
+ 0.0000
1.140 R MAX.
(28.96)
Ø 1.250 B.C
(31.75)
SERVO MOUNT: 302S/302-2
± 0.010
BUSHING MOUNT: 302B/302-1
± 0.010
± 0.031
1
0.831
(21.11)
0.093
(2.36)
0.062
(1.57)
0.625
(15.88)
0.073 MIN.
(1.85)
0.340 MIN.
(8.64)
0.239 MIN.
(6.07)
0.705
(17.91)
0.875
(22.22)
± 0.015
+ 0.0000
0.375
(9.52)
0.062
(1.57)
3
/
8
-
Ø 0.2497
- 0.0003
(6.34)
+ 0.0000
32 UNEF 2A
± 0.015
Ø 2.000
(50.80)
Ø 1.8750
- 0.0005
(47.62)
Ø 2.000
(50.80)
+ 0.0000
- 0.0010
Ø 0.4062
(10.32)
± 0.015
Ø 2.000
(50.80)
± 0.002
Ø 1.812
MAX. (46.02)
1
MTG. FACE
MTG. FACE
+ 0.0000
Ø 0.2497
- 0.0003
(6.34)
2
1
CW
3
ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS ± 0.005 ANGLES ± 2°
SCHEMATIC
Revision: 22-Nov-16
Document Number: 57057
2
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
Model 302
www.vishay.com
Vishay Spectrol
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
Bearing type
Ganging
Torque (maximums)
Servo and screw (1 section)
Bushing (1 section)
Each added section
Mechanical runouts (maximums)
Shaft (TIR/in)
Pilot dia. (TIR)
Lateral (TIR)
Shaft end play
Shaft radial play
Moment of inertia
Weight (maximums)
Single section:
Each additional section:
360° (continuous)
Servo and screw mount: ball
Bushing mount: sleeve
6 sections maximum, terminal alignment, added sections, within ± 10° of section 1 terminals
STARTING
1.0 oz. - in (72.00 g - cm)
1.7 oz. - in (122.42 g - cm)
0.6 oz. - in (43.21 g - cm)
SERVO AND SCREWING
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)
2.0 g - cm
2
per section maximum
4.0 oz. (113.40 g)
1.2 oz. (34.02 g)
RUNNING
0.5 oz. - in (36.00 g - cm)
1.0 oz. - in (72.00 g - cm)
0.4 oz. - in (28.80 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)
MATERIAL SPECIFICATIONS
Housing and lids
Shaft and clamp rings
Terminals
Bushing mount hardware
Lockwasher internal tooth:
Panel nut:
Aluminum, anodized
Stainless steel, non-magnetic
non-passivated
Brass, plated for solderability
Steel, nickel plated
Brass, nickel plated
ENVIRONMENTAL SPECIFICATIONS
Vibration
Shock
Salt spray
Rotational life
Temperature range
15
g
thru 2000 Hz
50
g
96 h
1 million shaft revolutions
-55 °C to +125 °C
Note
• Nothing stated herein shall be construed as a guarantee of
quality or durability.
MARKING
Unit identification
Units shall be marked with Vishay Spectrol name, model no and date code, and on each section,
resistance, resistance tolerance, linearity and terminal identification.
Example of a marking for a standard part: 302-11202
POWER RATING CHART
(Ratings for cup No. 1. Additional cups 75 % of values
shown)
RESISTANCE ELEMENT DATA
MAXIMUM MAXIMUM
WIRE
RESISTANCE RESO- OHMS CURRENT VOLTAGE
TEMP.
VALUES
LUTION PER AT 40 °C ACROSS
COEF.
COIL
()
(%)
TURN AMBIENT
(ppm/°C)
(V)
(mA)
5
10
0.320
0.200
0.165
0.148
0.151
0.126
0.115
0.098
0.085
0.059
0.051
0.043
0.032
0.016
0.020
0.033
0.074
0.151
0.252
0.573
0.981
1.70
2.93
5.16
8.55
15.80
893
633
447
283
200
141
89.4
63.3
44.7
28.3
20.0
14.1
8.94
4.48
6.32
8.95
14.1
20.0
28.4
44.7
63.2
89.5
141
200
284
447
800
800
800
800
20
20
20
20
20
20
20
20
20
RATED POWER IN W
8
6
4
SPECIAL 150 °C
20
50
100
200
500
1K
2K
5K
10K
20K
50K
2
0
20
STANDARD 125 °C
40
60
80
100
120
140
160
AMBIENT TEMPERATURE IN °C
Revision: 22-Nov-16
Document Number: 57057
3
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
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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 in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
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. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 08-Feb-17
1
Document Number: 91000
京公网安备 11010802033920号
EEWORLD
