How It Works Shipping Fee Terms of Use

Model MD-5C4S1-5 Thin Proximity Sensor for SUS Pachinko Balls (Open Collector Output / 5 VDC ) NEW 


  • Single or level detection of SUS pachinko balls
  • Detection of medals and coins or their level detection


  • Flat type proximity sensor (top surface detection type) exclusively for steel pachinko balls with a thickness of 4 mm (ultra-thin type) that can be used in common with the power supply 5 V DC.
  • The 2-wire sensor requires an external output residual voltage processing circuit and an open collector output conversion circuit (interface IC, etc.).
    Since this sensor has these circuits built-in, the cost of the external circuit of the sensor can be significantly reduced. In addition, since this sensor has an open collector output, High / Low logic processing is possible, and it can be directly connected as an input signal of 30 V DC or less.
  • Since the C-cut shape is used for the main body case, it is possible to prevent incorrect installation orientation.
  • Features a keyway on the case side for an easy installation in one touch.
  • Since the operation mode is normally closed, disconnection detection processing can be easily performed.

International Standards

  • Our products do not have overseas safety regulations such as CE mark, UL standard, EN standard etc.
  • Products is compliant to the RoHS directive.

* Please consult about "change of specification" and "request of specification" of the product.


Rating / Performance

Model MD-5C4S1-5
Detection Surface Upper side detection
Detection Distance SUS Pachinko ball 4.0 ± 0.5 mm (3.5 to 4.5 mm)
Hysteresis 0.1 to 1.5 mm
Standard Detection Object SUS Pachinko ball (ø 11 ± 0.05 mm)
Power Voltage 5 V DC (Operating voltage range : 4.5 V to 5.5 V DC)
Power Consumption 14 mA DC or less
Output NPN transistor open collector 30 V DC, 20 mA DC or less
Output Residual Voltage 1 V DC or less (Load current 20 mA DC)
Operation Status Normally closed
(Output ON without detection / Output OFF when target is detected)
Response Frequency 100 Hz or more
Temperature Range -20 to 70 °C (-25 to 70 °C during storage)
(Without dew condensation or freezing)
Humidity Range 35 to 85 % RH (35 to 85 % RH during storage) (Without dew condensation)
Breakdown Voltage 500 V AC, 50/60 Hz for 1 min (Between live parts and casing)
Insulation Resistance 50 MΩ or more, at 500 V DC megger (Between live parts and casing)
Vibration Resistance Durability : 10 to 55 Hz, Double amplitude: 1.5 mm in X-, Y-, and Z-direction, each 2 hours (Device not powered)
Shock Resistance Durability : 200 m/s² (Approx. 20 G) in X-, Y-, and Z-direction, each 3 times (Device not powered)
Anti-static Electricity 15kV Between the detection surface and the GND of the 1st terminal of the connector
(C=150 PF, Discharge resistance : 330 Ω)
Ingress Protection IP50
Case Material Case : ABS resin with glass (Blue), Cover : PC (Transparent)
Connector Connector : DF14A-3P-1.25H(22)(3-pin) (from HIROSE ELECTRIC CO., LTD.)
[Connections] Housing : DF14-3S-1.25C, Contact : DF14-2628SCF
Weight Approx. 3.2 g
(Sold Separately)
Connector harness : CNH-DF1403S26-300


Dimensions/Connector Harness/Output Circuit



Connector Harness (Sold Separately)


Output Circuit


*Because there is no reverse connection protection diode built-in, pay careful attention to the polarity of the power supply.

Precautions During Use

Influence by Surrounding Metals

Do not place metal around the proximity switch (Within 30 mm from the detection surface and within 15 mm from the back of the detection surface, or within 10 mm for the side surface from one direction and within 15 mm for the side surface from two directions.)
Otherwise, the detection distance may increase or other malfunctions may occur


Mutual Interference

When two or more identical sensors are used, observe the minimum values shown in the figure below to prevent mutual interference.
(The different frequency model type has “B” at the end of its model designation.)





  • Please note that this proximity sensor can detect SUS pachinko balls, but not Steel pachinko balls. Use "Model: MD-5C41-5" to detect Steel pachinko balls.
  • When detecting pachinko balls one by one, keep them at least 30 mm apart. In addition, the range of output operation time varies depending on the passing position, passing distance, passing speed, ball material, and parallelism of the medal surface with respect to the sensor detection surface.
  • Do not drop a detector such as a pachinko ball or medal directly on the detection surface.The internal ferrite core may be damaged by impact, and the sensor may deteriorate or fail. Also, do not directly hit or pass a detector such as a pachinko ball or medal against the detection surface of the sensor. Be sure to install an indirect materials (plastic, etc.) between the detector and the detection surface of the sensor for detection.
  • Be sure to insert and remove the connector horizontally. If you insert or remove it at an angle, it may cause terminal deformation, case damage, or poor contact.
For other precautions, refer to "General Precautions" for proximity sensors.

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