14810A0BBSX10503KA - VISHAY

148, 149

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Revision: 12-Apr-18 1Document Number: 57040

For technical questions, contact: sferpottrimmers@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

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1/2" (12.7 mm) Conductive Plastic and Cermet Potentiometer

DESIGN SUPPORT TOOLS

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

• Conductive plastic element

• Quiet electrical output

149 FEATURES

• Cermet element

• Low temperature coefficient (± 150 ppm/°C)



QUICK REFERENCE DATA

Multiple module Up to 3 modules

Switch module Yes

Detent module n/a

Special electrical laws A: linear, L: logarithmic, F: reverse

logarithmic

Sealing level IP 64

Lifespan 50K cycles

click logo to get started

Available

Models

DIMENSIONS in millimeters (inches) ± 0.5 mm (± 0.02")

12.5

(0.492)

12.5

(0.492)

(0.648)

16.45

2.54

(0.100)

123

7.62

(0.300)

Thread 1/4 32-NEF-2A

0.30

(0.012)

5.07

(0.200)

Single, dual or triple

Front and rear support plates

E = Flush with board surface

Dual Single

5.08

(0.200)

5.08

(0.200)

12.50

(0.492)

Solder lug terminals

0.8

(0.031)

0.80

(0.031)

4.7

(0.185)

4.70

(0.185)

8.83

(0.348)

6.35

(0.250)

6.35

(0.250) 6.35

(0.250)

3.85

(0.151)

1.52

(0.06)

0.6

(0.024)

0.6

(0.024)

0.60

(0.024)

8.85

(0.341)

3.17

(0.125)

12.5

(0.492)

0.6

(0.024)

12.5

(0.492)

2.54

(0.100) 2.54

(0.100) 7.62

(0.300) 3.85

(0.151)

1.52

(0.06)

1.2

(0.047)

12.5

(0.492)

4.65

(0.183) 4.65

(0.183)

1.800

(0.071)

2.4

(0.094)

4.900

(0.193)

6.35

(0.250)

8.0

(0.315)

0.9

(0.035)

0.300

(0.012)

4.770

(0.188)

9.52

(0.375)

Thread 3/8 32-NEF-2A

FMS

148, 149

www.vishay.com Vishay Spectrol

Revision: 12-Apr-18 2Document Number: 57040

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

Note

• Nothing stated herein shall be construed as a guarantee of quality or durability

ELECTRICAL SPECIFICATIONS

PARAMETER 148 149

Resistance range linear 1 k to 1 M100  to 2 M

non-linear 500  to 500 k250  to 1 M

Tolerance linear 10 % 10 %

non-linear 20 % on request 10 % 10 %

Linearity (typical) ± 5 % independent

End resistance 4  maximum each end

Power rating

0.5 W at 70 °C

0 W at 120 °C

1 W at 70 °C

0 W at 150 °C

Non-linear or PC mount, derate 50 %

Circuit diagram

Effective rotation 270° ± 10 ° without rotary switch

240° ± 10 ° with rotary switch

Contact resistance variation (typical) 1.5 % of total resistance 3 % of total resistance

Maximum continuous working voltage 350 VAC across end terminals, but within power rating

Dielectric withstanding voltage Sea level -750 VAC

MECHANICAL SPECIFICATIONS

Mechanical travel 300° ± 5°

Operating torque (typical) Single section 0.2 oz. to 3.0 oz. - in dual or triple section 0.3 oz.-inch to 4.5 oz.-inch

End stop torque bushing A and B 2.1 lb-inch max.

bushing F 6.8 lb-inch max.

Weight (approx.)

single 0.19 oz.

dual 0.27 oz.

triple 0.35 oz.

Terminals electrical elements e3: pure Sn

switch elements e4: gold plated

ENVIRONMENTAL SPECIFICATIONS

148 149

Operating temperature -40 °C to +125 °C -40 °C to +125 °C

Storage temperature -55 °C to +125 °C -55 °C to +125 °C

Temperature cycling (5 cycles) -40 °C to +125 °C (4 % RT) -40 °C to +125 °C (3 % RT)

Load life (1000 h rated load at 70 °C) 10 % RT5 % RT

Mechanical endurance 50 000 cycles

TCR (typical) ± 500 ppm/°C ± 150 ppm/°C

Sealing IP64

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)

(1)

(2)

(3)

148, 149

www.vishay.com Vishay Spectrol

Revision: 12-Apr-18 3Document Number: 57040

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

Note

(1) Common

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. CODE VERSION BUSHING

A, B

BUSHING

EFFECTIVE

HIGH PEG

All 148, 149 bushings have a double flat. When panel mounting

holes have been punched accordingly, an anti-rotation lug is not

necessary.

AØ d mm 2 2 0.7

L mm 6.2 6.2 -

BØ d mm 2 2 0.7

L mm 7.75 7.75 -

CØ d mm - 3.5 1.1

L mm - 13.5 -

Locating pegs are supplied in separate bags with nuts and

washers

RSID OPTION: ROTARY SWITCH MODULES

• Rotary switches

• Current up to 2 A

• SPDT: Single pole, changeover switch in CCW position - 3 pins

• Sealing IP60

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 62.5 VA 

15 VA =

Switching Current Maximum 0.25 A 250 V 

0.5 A 30 V =

Maximum Current Through Element 2 A

Contact Resistance 100 m

Dielectric

Strength

Terminal to Terminal 1000 VRMS

Terminal to Bushing 2000 VRMS

Maximum Voltage Operation 250 V

30 V =

Insulation Resistance Between Contacts 106 M

Life at Pmax. 10 000 actuations

Minimal Travel 25°

Operating Temperature -40 °C to +85 °C

ELECTRICAL DIAGRAM

Ø d

Spacer module

5.08 2.54

RSID

CCW POSITION

13 (1)

148, 149

www.vishay.com Vishay Spectrol

Revision: 12-Apr-18 4Document Number: 57040

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

ORDERING INFORMATION (part number)

MODEL NUMBER OF

MODULES SWITCH BUSHING LOCATING

PEG SHAFT SHAFT END LEADS

RESISTANCE

CODE/TOLERANCE/

TAPER OR SPECIAL

148 = plastic

conductive

149 = cermet

element

1 = RSID

0 = without

switch

See table

“Bushing”

0 = without

See table

“Shaft”

S = slotted

On request:

R = round

F = flatted

See table

“Leads”

Resistance code:

101 = 100  to

105 = 1 M

Tolerance code:

M = 20 %; K = 10 %

Taper: A (S); L (Z); F (R)

special code

given by Vishay

BUSHING

Ø L OLD CODES

A 1/4" 1/4" N

B 1/4" 3/8" J

F 3/8" 3/8" G

LEADS

TYPE PIN

SPACING

SPACE

BETWEEN

MODULES

OLD

CODES

X10

PCB pins 2.54 mm

(0.100")

n/a

X13 7.62 mm

(0.300")

A10 PCB pins and

support plates

2.54 mm

(0.100")

n/a

A13 7.62 mm

(0.300")

Y00

Sold, lugs 4.65 mm

(0.183")

n/a

Y03 7.62 mm

(0.300")

SHAFT

Ø FMS OLD CODES

BB 1/8" 1/2" 32

BG 1/8" 5/8" 40

BH 1/8" 3/4" 48

BJ 1/8" 7/8" 56

GB 1/4" 1/2" 32

GG 1/4" 5/8" 40

GH 1/4" 3/4" 48

GJ 1/4" 7/8" 56

GL 1/4" 1" 64

GN 1/4" 1 1/4" 80

PART NUMBER DESCRIPTION (for information only)

148 1 0 F 0 GJ S X10 BO50 10K 10 % A e3

MODEL MODULES SWITCH BUSHING LOCATING

PEG SHAFT SHAFT LEADS PACK. VALUE TOL. TAPER SPECIAL SPECIAL LEAD

FINISH

RELATED DOCUMENTS

APPLICATION NOTES

Potentiometers and Trimmers www.vishay.com/doc?51001

Guidelines for Vishay Sfernice Resistive and Inductive Components www.vishay.com/doc?52029

0F0GJSX 0 0 K81 14 113A

Legal Disclaimer Notice

www.vishay.com Vishay

Revision: 01-Jan-2021 1Document Number: 91000

Disclaimer

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RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.

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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

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