148, 149
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Vishay Spectrol
1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometer
FEATURES
• Robust construction
• High rotational life (50 000 cycles)
• Up to three sections PC support plates
• Rotary switches and solder lugs terminals available
• Tests according to CECC 41000 or IEC 60393-1
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
148 FEATURES
DESIGN SUPPORT TOOLS
Models
Available
click logo to get started
• Conductive plastic element
• Quiet electrical output
149 FEATURES
• Cermet element
Up to 3 modules
Yes
n/a
A: linear, L: logarithmic, F: reverse
logarithmic
IP 64
50K cycles
QUICK REFERENCE DATA
Multiple module
Switch module
Detent module
Special electrical laws
Sealing level
Lifespan
• Low temperature coefficient (± 150 ppm/°C)
DIMENSIONS
in millimeters (inches) ± 0.5 mm (± 0.02")
Single, dual or triple
12.5
(0.492)
0.8
(0.031)
12.5
(0.492)
Solder lug terminals
16.45
(0.648)
FMS
8.83
(0.348)
6.35
(0.250)
1.2
(0.047)
12.5
(0.492)
8.0
(0.315)
4.900
(0.193)
4.7
(0.185)
9.52
(0.375)
FMS
8.85
(0.341)
12.5
(0.492)
0.6
(0.024)
0.6
(0.024)
0.6
(0.024)
2.54
(0.100)
1 2 3
2.54
(0.100)
0.30
(0.012)
5.07
(0.200)
3.17
(0.125)
2.4
(0.094)
Thread 1/4 32-NEF-2A
7.62
(0.300)
0.9
(0.035)
1.800
(0.071)
4.65
(0.183)
1
2
3
0.300
(0.012)
4.770
(0.188)
Thread 3/8 32-NEF-2A
4.65
(0.183)
Front and rear support plates
E = Flush with board surface
4.70
(0.185)
12.5
(0.492)
0.80
(0.031)
Dual
Single
0.60
(0.024)
12.50
(0.492)
2.54
(0.100)
5.08
(0.200)
1 2 3
2.54
(0.100)
5.08
(0.200)
6.35
(0.250)
7.62
(0.300)
1.52
(0.06)
3.85
(0.151)
6.35
(0.250)
1.52
(0.06)
3.85
(0.151)
Revision: 12-Apr-18
Document Number: 57040
1
For technical questions, contact:
sferpottrimmers@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
6.35
(0.250)
148, 149
www.vishay.com
Vishay Spectrol
148
linear
1 k to 1 M
500
to 500 k
10 %
20 % on request 10 %
± 5 % independent
4
maximum each end
0.5 W at 70 °C
0 W at 120 °C
1 W at 70 °C
0 W at 150 °C
149
100
to 2 M
250
to 1 M
10 %
10 %
ELECTRICAL SPECIFICATIONS
PARAMETER
Resistance range
Tolerance
Linearity (typical)
End resistance
Power rating
non-linear
linear
non-linear
Non-linear or PC mount, derate 50 %
a
c
(3)
b
(2)
cw
Circuit diagram
(1)
Effective rotation
Contact resistance variation (typical)
Maximum continuous working voltage
Dielectric withstanding voltage
270° ± 10 ° without rotary switch
240° ± 10 ° with rotary switch
1.5 % of total resistance
Sea level -750 V
AC
3 % of total resistance
350 V
AC
across end terminals, but within power rating
MECHANICAL SPECIFICATIONS
Mechanical travel
Operating torque (typical)
End stop torque
bushing A and B
bushing F
single
Weight (approx.)
dual
triple
Terminals
electrical elements
switch elements
300° ± 5°
Single section 0.2 oz. to 3.0 oz. - in dual or triple section 0.3 oz.-inch to 4.5 oz.-inch
2.1 lb-inch max.
6.8 lb-inch max.
0.19 oz.
0.27 oz.
0.35 oz.
e3: pure Sn
e4: gold plated
ENVIRONMENTAL SPECIFICATIONS
148
Operating temperature
Storage temperature
Temperature cycling (5 cycles)
Load life (1000 h rated load at 70 °C)
Mechanical endurance
TCR (typical)
Sealing
Note
• Nothing stated herein shall be construed as a guarantee of quality or durability
± 500 ppm/°C
IP64
-40 °C to +125 °C
-55 °C to +125 °C
-40 °C to +125 °C (4 %
R
T
)
10 %
R
T
50 000 cycles
± 150 ppm/°C
149
-40 °C to +125 °C
-55 °C to +125 °C
-40 °C to +125 °C (3 %
R
T
)
5 %
R
T
MARKING
Vishay logo, SAP code of ohmic value, tolerance in %, variation law, manufacturing date (four digits), “3” for the lead 3, product series
(148, 149)
Revision: 12-Apr-18
Document Number: 57040
2
For technical questions, contact:
sferpottrimmers@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
148, 149
www.vishay.com
Vishay Spectrol
LOCATING PEGS
(anti-rotation lug)
The locating peg is provided by a plate mounted on the bushing
and positioned by the module sides. Four set positions are
available, clock face orientation: 12, 3, 6, 9.
All 148, 149 bushings have a double flat. When panel mounting
holes have been punched accordingly, an anti-rotation lug is not
necessary.
L
12
9
3
CODE
A
B
C
VERSION
Ø d mm
L mm
Ø d mm
L mm
Ø d mm
L mm
BUSHING
A, B
2
6.2
2
7.75
-
-
BUSHING
F
2
6.2
2
7.75
3.5
13.5
EFFECTIVE
HIGH PEG
0.7
-
0.7
-
1.1
-
Locating pegs are supplied in separate bags with nuts and
washers
6
Ød
RSID OPTION: ROTARY SWITCH MODULES
5.08
2.54
•
•
•
•
Rotary switches
Current up to 2 A
SPDT: Single pole, changeover switch in CCW position - 3 pins
Sealing IP60
L
l
Spacer module
MODULES: RS ON/OFF SWITCH
RSI CHANGEOVER SWITCH
The position of each module is free.
RS and RSI rotary switches are housed in a standard 148, 149
module size 12.7 mm x 12.7 mm x 5.08 mm (0.5" x 0.5" x 0.2").
They have the same terminal styles as the assembled electrical
modules.
An assembly can comprise 1 or more switch modules.
Switch actuation is described as seen from the shaft end.
D: means actuation in maximum CCW position
The switch actuation travel is 25° with a total mechanical travel
of 300° ± 5° and electrical travel of electrical modules is 238°
± 10°.
RSID Single Pole CHANGEOVER
In full CCW position, the contact is made between 3 and 2 and
open between 3 and 1. Switch actuation (CW direction) reverses
these positions.
SWITCH SPECIFICATIONS
Switching Power Maximum
Switching Current Maximum
Maximum Current Through Element
Contact Resistance
Dielectric
Strength
Terminal to Terminal
Terminal to Bushing
62.5 VA
15 VA =
0.25 A 250 V
0.5 A 30 V =
2A
100 m
1000 V
RMS
2000 V
RMS
250 V
30 V =
10
6
M
10 000 actuations
25°
-40 °C to +85 °C
Maximum Voltage Operation
Insulation Resistance Between Contacts
Life at P
max.
Minimal Travel
Operating Temperature
ELECTRICAL DIAGRAM
RSID
CCW POSITION
1
2 3
(1)
Note
(1)
Common
Revision: 12-Apr-18
Document Number: 57040
3
For technical questions, contact:
sferpottrimmers@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
148, 149
www.vishay.com
Vishay Spectrol
ORDERING INFORMATION
(part number)
1
4
8
1
0
F
0
G
J
S
X
1
0
1
0
3
K
A
MODEL
148 = plastic
conductive
149 = cermet
element
NUMBER OF
MODULES
1
2
3
SWITCH
1 = RSID
0 = without
switch
BUSHING
See table
“Bushing”
LOCATING
PEG
0 = without
A
B
C
SHAFT
See table
“Shaft”
SHAFT END
S = slotted
On request:
R = round
F = flatted
LEADS
See table
“Leads”
RESISTANCE
CODE/TOLERANCE/
TAPER OR SPECIAL
Resistance code:
101 = 100
to
105 = 1 M
Tolerance code:
M = 20 %; K = 10 %
Taper: A (S); L (Z); F (R)
or
special code
given by Vishay
BUSHING
Ø
A
B
F
1/4"
1/4"
3/8"
L
1/4"
3/8"
3/8"
OLD CODES
N
J
G
SHAFT
Ø
BB
BG
BH
BJ
GB
TYPE
PIN
SPACING
2.54 mm
(0.100")
SPACE
BETWEEN
MODULES
n/a
7.62 mm
(0.300")
n/a
7.62 mm
(0.300")
n/a
7.62 mm
(0.300")
S
E
P
OLD
CODES
GG
GH
GJ
GL
GN
1/8"
1/8"
1/8"
1/8"
1/4"
1/4"
1/4"
1/4"
1/4"
1/4"
FMS
1/2"
5/8"
3/4"
7/8"
1/2"
5/8"
3/4"
7/8"
1"
1 1/4"
OLD CODES
32
40
48
56
32
40
48
56
64
80
LEADS
X10
PCB pins
X13
A10
A13
Y00
Sold, lugs
Y03
PCB pins and
support plates
2.54 mm
(0.100")
4.65 mm
(0.183")
PART NUMBER DESCRIPTION
(for information only)
148
1
0
F
0
GJ
S
X10
BO50
10K
10 %
A
e3
MODEL MODULES SWITCH BUSHING
LOCATING
LEAD
SHAFT SHAFT LEADS PACK. VALUE TOL. TAPER SPECIAL SPECIAL
PEG
FINISH
RELATED DOCUMENTS
APPLICATION NOTES
Potentiometers and Trimmers
Guidelines for Vishay Sfernice Resistive and Inductive Components
www.vishay.com/doc?51001
www.vishay.com/doc?52029
Revision: 12-Apr-18
Document Number: 57040
4
For technical questions, contact:
sferpottrimmers@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
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