Document Number: 54007

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 07-Sep-07

25

Series ECO

Vishay Sfernice

Precision Rotative Transducers,

Conductive Plastic, Economic Series (ECO)

FEATURES

• Long Life up to 30 million cycles

• Accuracy ± 1 % down to ± 0.25 %

• Bush or servo mounting types

• Rear mounted terminals

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

The “ECO” models are a comprehensive range of rotational

motion transducers for industrial applications.

RoHS

COMPLIANT

SIZE

05

09

13

MODEL

50 ES

50 CB

78 ES

78 CS

78 CB

156 ES

156 CS

156 CB

ELECTRICAL SPECIFICATIONS

Theoretical Electrical Angle (TEA)

Actual electrical angle (AEA) - 2°

Independent Linearity (over TEA)

A

≤ ± 1 %

(standard)

B

≤ ± 0.5 %

(special)

C

≤ ± 0.25 %

(special)

Actual Electrical Angle (AEA)

330° ± 5°

340° ± 5°

350° ± 5°

1 k

Ω - 5 kΩ - 10 kΩ - on request other values

Ohmic Value Tolerances at 20 °C

± 10 %

± 20 %

± 10 %

± 20 %

± 10 %

± 20 %

Output Smoothness

≤ 0.05 %

Maximum Power Rating at 70 °C

0.2 W

0.3 W

0.5 W

Wiper Current

Recommended: a few µA - 1 mA max. (continuous)

Tap (Current or Voltage)

NA

1 (on request)

Resistance Load on Wiper

End Voltage

≤ 0.2 %

≤ 0.5 %

≤ 0.2 %

≤ 0.5 %

≤ 0.2 %

≤ 0.5 %

Insulation Resistance

≥ 1000 MΩ, 500 V

DC

Dielectric Strength

≥ 500 V

MECHANICAL SPECIFICATIONS

Mechanical Angle (MA)

360° continuous

On Request: Stops

NA

340° ± 3°

350° ± 3°

Mounting Type

Servo

Bushing

Servo

Bushing

Servo

Bushing

Shaft Guiding

Ball

bearings

Sleeve

bearings

Ball

bearings

Sleeve

bearings

Ball

bearings

Sleeve

bearings

Shaft

Stainless steel

Housing

Plastic moulding

Termination

Turrets

Wiper

Precious metal multi-finger contact

Starting Torque (N.cm)

≤ 0.2

≤ 0.5

≤ 0.2

≤ 0.5

≤ 0.2

≤ 0.5

Torque on Stops (N.cm)

50

Weight (g)

5 ± 2

8 ± 2

13 ± 2

17 ± 2

29 ± 2

34 ± 2

≤ 0.5

≤ 1

≤ 2

All mechanical and electrical parameters can be adapted to

meet your specifications.