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MF-9100 Series
Conductive plastic resistor element used (Low slide noise).
Horizontal style control-bar design (Protection against dust).
Durable system which adopted the shaft of the high quality.
3 types of output laws.
All models include a touch sense track.
Last update: 2024.06.21. [Specifications] [Note] [Dimensions] [Model-number] [Update list] EU-RoHS

Due to a delay in parts procurement, the color of the main body (label side) has been changed to gray.
This will not affect the use of the product.
If you cannot change the color, please contact our sales department.

Electrical specifications
(initial value)
MF-9100 Series
Products MF-910*-B*-* MF-910*-A*-* MF-910*-AP*-*
Number of circuits
Type of output laws
Law1: Linear taper
Law1: Linear taper
Law2: Audio taper
Law1: Linear taper
Law2: AP taper
Circuit method (Output law1) Potentiometer circuit
Circuit method (Output law2) - Ladder circuit
Total resistance (1-C), (1-3) 10kohm,   5kohm
Total resistance tolerance ±20%
Absolute linearity (Linear taper) ±5% (The travel is divided into 10 sections and 11 positions are measured.)
Residual voltage (1-2), (2-3)
(Linear taper)
10mV or less
Residual resistance (1-2), (2-3)
(Linear taper)
30ohm or less  (Reference values)
Touch sense track contact
20ohm or less (Between terminal 4 and Control-bar.)
Attenuation accuracy
[Load: high]
- 0 - 20dB: ±1.0dB (10dB: ±0.5dB)
   - 40dB: ±2.0dB
(Audio taper,   AP taper)
Insertion loss - 0.5dB or less   (Audio taper,   AP taper)
Cut off [15kHz] - 100dB Min.   (Audio taper,   AP taper)
Voltage proof 1 Min. at AC500V
Insulation resistance 50Mohm or more at DC500V
Max rating 0.2W (Linear taper),  0.1W (Other taper)
Maximum input voltage DC30V or less
Sliding noise level 47mV or less (by JIS C 6443)
Sliding life 100,000 Cycles Min. (18cycles/min, Sliding noise level: Less than 100mV)
Drive motor data

DC12V Coreless motor : Input voltage: DC12V, Stall current: 0.55A or less
               [12CL-3035 (Custom-made for TKD.) : Orbray Co., Ltd.]
DC8V Iron cored motor : Input voltage: DC5V - 11.5V (Nominal DC8V), Stall current: 0.5A or less
               [FF-050SB-09250 : MABUCHI MOTOR Co., Ltd.]

Mechanical specifications
(initial value)
MF-9100 Series
Travel (Stroke) length 100mm ±0.5mm
Operating force 0.1 to 0.3N
Strength Nut-Attached 100Ncm
Attached parts M3 screw (Length: Panel thickness + 3mm)
Stopper strength 40N
Push-pull strength 40N
Alignment to the center ±0.5mm (State not to pressure control-bar, Measurement position: Mounting surface)

General specifications MF-9100 Series
Temperature range -10 to +50 degrees C (Operating), -15 to +60 degrees C (Storage)
Relative humidity 80%RH (No condensation)

Please check before use.
* Solder heat resistance: 350deg C max, 5sec max, 2 times. (Manual soldering only)
* Please take care during soldering that the smoke from the solder does not flow inside a fader.
* If the flux sticks to a resistor board, it may cause a trouble with the fader.
* Move to one end in Control-bar on the occasion of knob wearing, and can break into it slowly.
* It is highly recommended that the fault tolerant system is to be set up in the big situation like the live broadcast.
* This product is designed on the assumption of the horizontal use.
* The enough operational testing is highly recommended for the slant or the vertical use to prevent the unexpected operation.
* Replacing it from other brands tests it enough, and please consider.
* Click here for the type without a motor. >>
* Caution in Ladder circuit(Audio and AP taper) use.

   Important points in using audio curve and log curve of TKD faders >>
The load resistance (R) on the fader output side should be much higher than 20 times the total resistance value.

During fader operation, due to noise generated from friction between resistive elements and contacts
and noise generated from vibration of the power mechanism, there are many factors affecting the output signal quality.

To reduce these effects, use decoupling capacitors (C).
(Use a capacitor value that matches the control circuit to which it is connected.)

* It is recommended that motor leads be shortened and twisted.
  The J12 motor may be replaced with a thicker wire in the middle.
  Consider not to interfere with other motor leads.
* Color may vary slightly due to body material.
* Due to the way the body is processed, there may be some rubbing on the folded parts.
* A simple resistor maintenance procedure is presented. Please try it when you need it.
  However, we do not guarantee the product after this work.
* Please provide your own equipment.

    >>  1st step ,  2nd step ,  3rd step

MF-9101-B**K-J12   (Linear taper) MF-9101-A**K-J12   (Linear taper + Audio taper)
MF-9101-AP**K-J12   (Linear taper + AP taper)

Dimensions - MF-910*-**-M8V
MF-9101-B**K-M8V   (Linear taper) MF-9101-A**K-M8V   (Linear taper + Audio taper)
MF-9101-AP**K-M8V   (Linear taper + AP taper)

Dimensions - Panel cut out

Dimensions - Terminations

Model number
MF-910 1 - B 10K - J12
*1 *2   *3 *4   *5

*1 Product number MF-910 : MF-9100 Series
*2 Control-bar length: Length (Bracket height) 1 : 9mm (5mm)

Output law

B   : Linear taper + Touch sense track
A   : Linear taper + Audio taper + Touch sense track
AP : Linear taper + AP taper + Touch sense track
Total resistance
10K : 10kohm
5K   : 5kohm
DC Motor type
J12  : DC12V Coreless
M8V : DC8V Iron cored

Products No.
( X: Standard model)
Travel Output
Motor Mounting
Control-bar length
(Bracket height)
MF-9101-B10K-J12 X 100mm Linear - 10kohm - With DC12V
M3 9mm (5mm)
MF-9101-B5K-J12   100mm Linear - 5kohm - With DC12V
M3 9mm (5mm)
MF-9101-B10K-M8V X 100mm Linear - 10kohm - With DC8V
iron cored
M3 9mm (5mm)
MF-9101-B5K-M8V   100mm Linear - 5kohm - With DC8V
iron cored
M3 9mm (5mm)
MF-9101-A10K-J12   100mm Linear Audio 10kohm 10kohm With DC12V
M3 9mm (5mm)
MF-9101-A5K-J12   100mm Linear Audio 5kohm 5kohm With DC12V
M3 9mm (5mm)
MF-9101-A10K-M8V   100mm Linear Audio 10kohm 10kohm With DC8V
iron cored
M3 9mm (5mm)
MF-9101-A5K-M8V   100mm Linear Audio 5kohm 5kohm With DC8V
iron cored
M3 9mm (5mm)
MF-9101-AP10K-J12   100mm Linear AP 10kohm 10kohm With DC12V
M3 9mm (5mm)
MF-9101-AP5K-J12   100mm Linear AP 5kohm 5kohm With DC12V
M3 9mm (5mm)
MF-9101-AP10K-M8V   100mm Linear AP 10kohm 10kohm With DC8V
iron cored
M3 9mm (5mm)
MF-9101-AP5K-M8V   100mm Linear AP 5kohm 5kohm With DC8V
iron cored
M3 9mm (5mm)

Update list
2024.06.21. Add load resistance information.
2023.12.19. Addition of maximum input voltage specification.     Change in maximum ratings.
2023.08.24. Add maintenance information.
2023.08.04. Added note on motor leads and body material.
2023.07.20. Slight correction of specification notations.
2023.06.16. Additional 3D data (step format).
2023.01.01. Change of company name. [Adamant Namiki Precision Jewel Co., Ltd. → Orbray Co., Ltd.]
2022.11.01. First edition