Series ROT/SF

www.vishay.com

Vishay Sfernice

Revision: 26-Mar-15

1

Document Number: 54004

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

Precision Rotative Transducers,

Conductive Plastic, Servo Mounting

A complete range of servo mounting rotational transducers

for applications requiring long life accuracy and speed.

FEATURES

• Size 08 to 30

• Linearity ± 1 % down to ± 0.015 %

• Excellent repeatability

• Long life

• Essentially infinite resolution

• Up to 6 electrical functions with the same shaft

• On request custom design to meet your specifications

• Following MIL-R-39023 and NFC 93-255 requirements

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

Note

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

QUICK REFERENCE DATA

Sensor type

ROTATIONAL, conductive plastic

Output type

Output by turrets

Market appliance

Professional

Dimensions

Various sizes

ELECTRICAL SPECIFICATIONS

Size

08

09

11

13

15

18

20

30

Model

34 SF

78 SF

116 SF

156 SF

176 SF

134 SF

200 SF

300 SF

Functions

Linear, on request specific law

Theoretical electrical angle (TEA)

TEA = actual electrical angle (AEA) - 2°

Independent linearity (over TEA)

On request best linearity available

A

 ± 1 %

or

B

 ± 0.5 %

or

C

 ± 0.25 %

or

D

 ± 0.1 %

D

 ± 0.1 %

Down to E

 ± 0.05 % Down to F  ± 0.025 % Down to  ± 0.015 %

Actual electrical angle (AEA)

340° ± 3°

350° ± 2°

Ohmic values (RT)1 k - 2 k - 5 k - 10 k - on request other values

Ohmic value tolerances at 20 °C

± 10 %; on request ± 5 %

Output smoothness

 0.025 %

On request

 0.01 %

Maximum power rating at 70 °C

0.25 W

0.3 W

0.4 W

0.5 W

0.75 W

1.0 W

1.2 W

1.5 W

Wiper current/load resistance

Recommended: a few μA - 1 mA max. continuous/minimum 103 × RT

Tap (current or voltage)

On request with angular position to be

specified

U = Current

{ Position: ± 2°

/T = voltage

Position: ± 2°

{ Width:

 4°

Repeatability

 0.01 %

End voltage

 0.4 % for 470  v R

T  1000 / 0.2 % for 1000   RT  2200 / 0.1 % RT > 2200 

Insulation resistance

 1000 M, 500 V

DC

Dielectric strength

 750 V

RMS, 50 Hz

 1000 V

RMS, 50 Hz

MECHANICAL SPECIFICATIONS

Mechanical rotation

360° continuous; stops on request

Mounting/shaft guiding

Servo/ball bearings

Housing

Diallylphtalate; on request anodized aluminum

Shaft material/common option

Stainless steel/screw driver slot

Termination

Turrets; on request flexible leads, cables...

Wiper

Precious metal multi-finger contact

Starting torque (N.cm)

1 cup

0.2

0.25

each additional cup

0.15

Moment of inertia (g. cm2)

0.3

0.4

0.6

0.8

2.2

2.8

3.5

10

Weight (g)

1 cup

11 ± 2

16 ± 2

20 ± 2

29 ± 2

49 ± 2

67 ± 3

79 ± 3

120 ± 10

each additional cup

5 ± 2

6 ± 2

7 ± 2

10 ± 2

16 ± 2

18 ± 3

21 ± 3

62 ± 10

PERFORMANCE

Life (million of cycles)

 50

Temperature range

-55 °C to +125 °C

Climatic category

55/125/04

Maximum rotation speed (RPM)

600

Sine vibration on 3 axes

1.5 mm or 20 g from 10 Hz to 2000 Hz

Mechanical shocks on 3 axes

50 g - 11 ms - half sine