Series ROT/SF
Vishay Sfernice
Precision Rotative Transducers,
Conductive Plastic, Servo Mounting
FEATURES
• Size 08 to 30
• Linearity ꢀ ꢁ down to 0.0ꢀ5 ꢁ
• Excellent repeatability
• Long life
RoHS
COMPLIANT
• 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
A complete range of servo mounting rotational transducers
for applications requiring long life accuracy and speed.
SIZE
08
09
11
13
15
18
20
30
MODEL
34 SF
78 SF
ꢀꢀ6 SF
ꢀ56 SF
ꢀ76 SF
ꢀ34 SF
200 SF
300 SF
ELECTRICAL SPECIFICATIONS
Functions
Linear, on request specific law
TEA = actual electrical angle (AEA) - 2°
B ≤ 0.5 ꢁ or C ≤ 0.25 ꢁ
Theoretical Electrical Angle (TEA)
A ≤ ꢀ ꢁ
D ≤ 0.ꢀ ꢁ
340° 3°
ꢀ kΩ
or
or
D ≤ 0.ꢀ ꢁ
Independent Linearity (over TEA)
On Request Best Linearity Available
Down to E ≤ 0.05 ꢁ Down to F ≤ 0.025 ꢁ Down to ≤ 0.0ꢀ5 ꢁ
Actual Electrical Angle (AEA)
Ohmic Values (RT)
350° 2°
-
2 kΩ
-
5 kΩ
ꢀ0 ꢁ; on request 5 ꢁ
≤ 0.025 ꢁ
0.4 W 0.5 W
- ꢀ0 kΩ - on request other values
Ohmic Value Tolerances at 20 °C
Output Smoothness
On request ≤ 0.0ꢀ ꢁ
ꢀ.2 W ꢀ.5 W
Maximum Power Rating at 70 °C
Wiper Current/Load Resistance
0.25 W
0.3 W
0.75 W
ꢀ.0 W
Recommended: a few µA - ꢀ mA max. continuous/minimum ꢀ03 × RT
{ Position: 2°
Tap (Current or Voltage)
On Request with Angular Position to be Specified
U = Current
/ T = Voltage Position: 2°
{ Width: ≤ 4°
≤ 0.0ꢀ ꢁ
Repeatability
End Voltage
≤ 0.4 ꢁ for 470 Ω ≤ RT ≤ ꢀ000 Ω / ≤ 0.2 ꢁ for ꢀ000 Ω ≤ RT ≤ 2200 Ω / ≤ 0.ꢀ ꢁ RT > 2200 Ω
≥ ꢀ000 MΩ, 500 VDC
Insulation Resistance
Dielectric Strength
≥ 750 VRMS, 50 Hz
≥ ꢀ000 VRMS, 50 Hz
MECHANICAL SPECIFICATIONS
Mechanical Rotation
Mounting/Shaft Guiding
Housing
360° continuous; stops on request
Servo/ball bearings
Diallylphtalate; on request anodized aluminum
Turrets; on request flexible leads, cables...
Precious metal multi-finger contact
Termination
Wiper
0.2
0.25
ꢀ cup
Starting Torque (N.cm)
0.ꢀ5
each additional cup
Moment of Inertia (g. cm2)
0.3
ꢀꢀ
0.4
ꢀ6
0.6
20
0.8
29
ꢀ0
2.2
49
ꢀ6
2.8
67
ꢀ8
3.5
79
2ꢀ
ꢀ0
2
2
2
2
2
2
2
3
3
3
3
ꢀ20 ꢀ0
62 ꢀ0
ꢀ cup
Weight (g)
5
2
6
2
7
2
each additional cup
PERFORMANCE
Life (Million of Cycles)
≥ 50
Temperature Range
- 55 °C to + ꢀ25 °C
55/ꢀ25/04
600
Climatic Category
Maximum Rotation Speed (RPM)
Sine Vibration on 3 Axes
Mechanical Shocks on 3 Axes
ꢀ.5 mm or 20 g from ꢀ0 Hz to 2000 Hz
50 g ꢀꢀ ms half sine
-
-
www.vishay.com
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For technical questions, contact: sfer@vishay.com
Document Number: 54004
Revision: 22-Mar-07