Model 122
www.vishay.com
Vishay Spectrol
1
1
/
16
" (27 mm) Single Turn Wirewound
Precision Potentiometer
FEATURES
• Gangable up to 6 sections
• Extra taps on request
• Bushing or servo mount types available
• Ohmic value range: 5
up to 100 k
• 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
1
1
/
16
" (27 mm)
ELECTRICAL SPECIFICATIONS
PARAMETER
Total resistance
Tolerance: 20
and above
Below 20
Linearity (independent):
5
to 200
200
to 2 k
2 k to 10 k
10 k and above
Noise
Electrical angle
Power rating
Section 1:
Additional sections:
Insulation resistance
Dielectric strength
Absolute minimum resistance
End voltage
Phasing (CCW end points)
Taps (extra)
STANDARD
5
to 20 k
±3%
±5%
STANDARD
± 1.0 %
± 0.5 %
± 0.5 %
± 0.5 %
100
ENR
350° ± 2°
1.50 W at 70 °C ambient, derated to zero at 125 °C
75 % of the rating of section 1 (1.125 W at 70 °C)
1000 M minimum, 500 V
DC
1000 V
RMS
60 Hz
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
Additional sections phased to section 1 within ± 1°
9 available as special standard tolerance ± 1°
SPECIAL
to 30 k
±1%
±3%
BEST PRACTICAL
± 0.50 %
± 0.35 %
± 0.25 %
± 0.20 %
ORDERING INFORMATION
1
2
2
S
1
2
0
3
2
0
3
X
X
X
X
MODEL
122
STYLE
B:
bushing
S:
servo
GANGS
1
2
3
4
5
6
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: 26-Mar-15
Document Number: 57036
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 122
www.vishay.com
PART NUMBER DESCRIPTION
(for information only)
122-
MODEL
1
STYLE
B:
1
S:
2
1
GANGS
102
OHMIC VALUE
GANGS N
o
1
103
OHMIC VALUE
GANGS N
o
2
xxxx
SPECIAL
Vishay Spectrol
DIMENSIONS
in inches (millimeters)
BUSHING MOUNT: 122B/122-1...
1
± 0.010
0.687
(17.45)
0.875
(22.22)
± 0.031
0.375
(9.52)
0.308 MIN.
(7.82)
0.062
(1.57)
Ø 0.1248
(3.17)
+ 0.0000
- 0.0003
± 0.015
3
30°
TYP.
1
2
Ø 0.4062
(10.32)
Ø 1.062
(26.97)
± 0.015
+ 0.0000
- 0.0010
3
/
8
- 32 UNEF - 2A
0.735 R MAX.
(18.67)
MTG. FACE
SERVO MOUNT: 122S/122-2...
0.308 MIN.
(7.82)
0.500
(12.70)
0.062
(1.57)
0.062
(1.57)
1
1
± 0.031
0.687
(17.45)
± 0.010
ADD 0.500 ± 0.002 (12.70) FOR EACH
ADDITIONAL SECTION
0.062
(1.57)
Ø 0.9688
- 0.0005
(24.61)
+ 0.0000
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS ± 0.005 ANGLES ± 2°
Ø 1.062
(26.97)
± 0.015
2
+ 0.0000
CW
3
1
Ø 0.968 MAX.
(24.58)
MTG. FACE
Ø 0.1248
- 0.0003
(3.17)
SCHEMATIC
MATERIAL SPECIFICATIONS
Housing and lids
Shaft
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
15
g
thru 2000 CPS
Shock
50
g
Salt spray
96 h
Rotational life
1 million shaft revolutions
Load sife
900 h
Temperature range
-55 °C to +125 °C
Note
• Nothing stated herein shall be construed as a guarantee of
quality or durability
Revision: 26-Mar-15
Document Number: 57036
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 122
www.vishay.com
Vishay Spectrol
RESISTANCE ELEMENT DATA
MAXIMUM MAXIMUM
WIRE
CURRENT VOLTAGE
TEMP.
ACROSS
AT 70 °C
COEF.
COIL
AMBIENT
(ppm/°C)
(V)
(mA)
548
387
274
173
122
86.6
54.8
38.7
27.4
17.3
12.2
8.66
5.48
3.87
2.74
3.87
5.48
8.65
12.2
17.3
27.4
38.7
54.8
86.5
122
173
274
387
800
800
180
180
20
20
20
20
20
20
20
20
20
20
MARKING
Unit
identification
Units shall be marked with Vishay Spectrol
name and model number resistance and
resistance tolerance, linearity, terminal
identification and data code.
Example of a marking for a standard part:
122-11502
RESISTANCE RESO- OHMS
VALUES
LUTION PER
()
(%)
TURN
5
10
20
50
100
200
500
1K
2K
5K
10K
20K
0.364
0.311
0.250
0.232
0.232
0.194
0.168
0.156
0.109
0.088
0.076
0.071
0.062
0.052
0.018
0.031
0.050
0.116
0.231
0.389
0.841
1.557
2.178
4.382
7.644
14.235
30.921
51.983
POWER RATING CHART
(Ratings for cup No. 1.Additional cups 75 % of values
shown)
6
5
RATED POWER IN W
4
3
2
1
0
20
SPECIAL 150 °C
STANDARD 125 °C
50K
100K
40
60
80
100
120
140
160
AMBIENT TEMPERATURE IN °C
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
Bearing type
Torque (maximums)
Servo, 1 section
Bushing, 1 section
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
Ganging
Moment of inertia
360° continuous
Servo mount: ball bearing
Bushing mount: sleeve bearing
STARTING
0.25 oz. - in (18.0 g - cm)
0.30 oz. - in (21.6 g - cm)
0.20 oz. - in (14.4 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)
0.8 oz. (22.7 g)
0.4 oz. (11.3 g)
6 sections maximum, terminal alignment, added sections within ± 10° of section 1 terminals
0.12 g - cm
2
per section maximum
RUNNING
0.15 oz. - in (10.8 g - cm)
0.25 oz. - in (18.0 g - cm)
0.15 oz. - in (10.8 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)
Revision: 26-Mar-15
Document Number: 57036
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.
Revision: 13-Jun-16
1
Document Number: 91000
