Series ROT/BF
Vishay Sfernice
Precision Rotative Transducers,
Conductive Plastic, Bushing Mounting
FEATURES
• Size 08 to 30
• Linearity ꢀ ꢁ down to 0.05 ꢁ
• Good repeatability
RoHS
COMPLIANT
• 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
A complete range of bushing mounting rotational motion
transducers.
SIZE
08
09
11
13
15
18
20
30
MODEL
34 BF
78 BF
ꢀꢀ6 BF
ꢀ56 BF
ꢀ76 BF
ꢀ34 BF
200 BF
300 BF
ELECTRICAL SPECIFICATIONS
Functions
Theoretical Electrical Angle (TEA)
Linear, on request specific law
Actual electrical angle (AEA) - 2°
or
C ≤ 0.25 ꢁ
A ≤ ꢀ ꢁ
C ≤ 0.25 ꢁ
B ≤ 0.5 ꢁ
Down to D ≤ 0.ꢀ ꢁ
or
Independent Linearity (over TEA)
Best Linearity Available
Down to E ≤ 0.05 ꢁ
Actual Electrical Angle (AEA)
Ohmic Values (RT)
340° 3°
350° 2°
ꢀ kΩ
-
2 kΩ
-
5 kΩ
-
ꢀ0 kΩ - on request other values
Ohmic Value Tolerances at 20 °C
Output Smoothness
ꢀ0 ꢁ
≤ 0.05 ꢁ
≤ 0.025 ꢁ
Maximum Power Rating at 70 °C
Wiper Current
0.25 W
0.3 W
0.4 W
0.5 W
0.75 W
ꢀ.0 W
ꢀ.2 W
ꢀ.5 W
Recommended: a few µA - ꢀ mA max. (continuous)
{ Position: 2°
Tap (Current or Voltage)
On Request with Angular Position to be Specified
U = current
/ T = voltage Position: 2°
{ Width: ≤ 4°
min. ꢀ03 x RT
≤ 0.02 ꢁ
Load Resistance on Wiper (RL)
Repeatability
End Voltage
≤ 0.4 ꢁ for 470 Ω ≤ RT ≤ ꢀ000 Ω / ≤ 0.2 ꢁ for ꢀ000 Ω < RT ≤ 2200 Ω / ≤ 0.ꢀ ꢁ for RT > 2200 Ω
≥ ꢀ000 MΩ, 500 VDC
Insulation Resistance
Dielectric Strength
≥ 750 VRMS, 50 Hz
≥ ꢀ000 VRMS, 50 Hz
MECHANICAL SPECIFICATIONS
Mechanical Rotation
Mounting Type
Shaft Guiding
Shaft
360° continuous; stops on request
Bushing
Sleeve bearings; on request ball bearings
Stainless steel
Housing
Plastic moulding; on request anodized aluminum
Turrets; on request flexible leads, cables...
Precious metal multi-finger contact
Termination
Wiper
Starting Torque (N.cm)
Moment of Inertia (g. cm2)
≤ 0.5 ꢀ cup; ≤ 0.3 for each additional cup
0.3
ꢀꢀ
0.4
20
0.6
2ꢀ
0.8
30
ꢀ4
2.2
33
ꢀ6
2.8
45
ꢀ8
3.5
54
2ꢀ
ꢀ0
ꢀ cup
Weight (g)
2
2
2
2
2
2
2
3
3
3
3
ꢀ20 ꢀ0
62 ꢀ0
each additional cup
5
2
6
2
7
2
PERFORMANCE
Life (Million of Cycles)
Temperature Range
Climatic Category
≥ 20
- 55 °C to + ꢀ25 °C
55/ꢀ25/04
ꢀ50
Rotation Speed (RPM)
www.vishay.com
44
For technical questions, contact: sfer@vishay.com
Document Number: 54005
Revision: 22-Mar-07