148, 149

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Vishay Spectrol

Revision: 12-Apr-18

2

Document 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 %

R

T)

-40 °C to +125 °C (3 %

R

T)

Load life (1000 h rated load at 70 °C)

10 %

R

T

5 %

R

T

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)

a

(1)

b

(2)

c

(3)

cw