Capacitive, Magnetic and Piezo Switches

Capacitive, Magnetic, and Piezo Switches are types of electronic switches that operate based on different principles. Let's explore each of them:

  1. Capacitive Switches: Capacitive switches use the principle of capacitance to detect touch or proximity. They typically have a touch-sensitive surface that acts as one plate of a capacitor, while the other plate is usually a ground plane or a separate electrode. When a conductive object, such as a finger, comes close to or touches the touch-sensitive surface, it changes the capacitance, which is then detected by the switch's electronics. Capacitive switches are commonly used in touchscreens, touch-sensitive buttons, and proximity sensors.
  2. Magnetic Switches: Magnetic switches, also known as magnetic reed switches, use the presence or absence of a magnetic field to control the switch's operation. They consist of two metal reeds that are hermetically sealed within a glass tube. Each reed contains magnetically sensitive material. When a magnetic field is applied near the switch, the reeds are attracted to each other, and the switch closes, allowing current to flow. When the magnetic field is removed, the reeds separate, and the switch opens. Magnetic switches are often used in applications such as security systems, door and window sensors, and proximity sensors.
  3. Piezo Switches: Piezo switches utilize the piezoelectric effect to convert mechanical stress or pressure into an electrical signal. They consist of a piezoelectric material, such as certain crystals or ceramics, that generates an electric charge when subjected to mechanical deformation. When pressure or force is applied to the switch, it causes the piezoelectric material to deform, generating an electrical signal. This signal can be used to trigger a switching action. Piezo switches are commonly found in applications where a robust and reliable switch is required, such as industrial control panels, medical equipment, and automotive applications.

Each type of switch has its own advantages and limitations. Capacitive switches offer touch-sensitive and non-mechanical operation but may be affected by moisture or dirt. Magnetic switches are highly reliable and can operate in harsh environments but require the presence of a magnetic field. Piezo switches are durable and can withstand high forces, but they require mechanical pressure to operate and are typically more expensive.

Capacitive Switches
Capacitive Switches
Hall Effect Switches
Hall Effect Switches
Piezo Switches
Piezo Switches
Reed Switch Magnets
Reed Switch Magnets
Reed Switches
Reed Switches
Thumbwheel Switches
Thumbwheel Switches

1019 Products showing for Capacitive, Magnetic and Piezo Switches

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8 / 51
Temporarily out of stock
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0429
  • Mfr. Part No. OHD1-110M
Subtotal (1 tray of 60 units)
MYR1,714.26
MYR28.571/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-1036
  • Mfr. Part No. OHD3-50B
Subtotal (1 unit)
MYR25.51
MYR25.51/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0980
  • Mfr. Part No. OHD3-80B
Subtotal (1 unit)
MYR25.98
MYR25.98/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0853
  • Mfr. Part No. OHD3-65B
Subtotal (1 unit)
MYR25.76
MYR25.76/unit
In Stock
DiodesZetex Hall Effect Sensor 3.3 mA Surface Mount Linear Latching, 150 °C, -40 °C, 27V, 2.7 V
  • RS Stock No. 222-2764P
  • Mfr. Part No. AH3272Q-W-7
Subtotal 25 units (supplied on a continuous strip)
MYR60.65
MYR2.426/unit
In Stock
Elma Mechanical Rotary Encoder Hall Effect Switch
  • RS Stock No. 241-2362
  • Mfr. Part No. X4-P3B00-4S1
Subtotal (1 box of 1 unit)
MYR807.34
MYR807.34/box
Currently unavailable
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0426
  • Mfr. Part No. OHD1-95M
Subtotal (1 tray of 60 units)
MYR1,286.04
MYR21.434/unit
Temporarily out of stock
Bulgin Capacitive switch Latching NO Illuminated, Red, Green, On-Off, IP68 Black Anodised
  • RS Stock No. 204-8175
  • Mfr. Part No. MC19LOBGR
Subtotal (1 box of 60 units)
MYR13,222.80
MYR220.38/unit
Temporarily out of stock
Bulgin Capacitive switch Momentary NO Illuminated, Red, Green, On-Off, IP68 Red Anodised
  • RS Stock No. 204-8073
  • Mfr. Part No. MC19MORGR
Subtotal (1 box of 60 units)
MYR12,910.02
MYR215.167/unit
Currently unavailable
Bulgin Capacitive switch Latching NO Illuminated, Green, Red, IP68, IP69K Black Anodised
  • RS Stock No. 204-8176
  • Mfr. Part No. MC19LOBRG
Subtotal (1 box of 60 units)
MYR12,757.08
MYR212.618/unit
Temporarily out of stock
Bulgin Capacitive switch Latching NC Illuminated, Green, Red, On-Off, IP68 Red Anodised
  • RS Stock No. 204-8076
  • Mfr. Part No. MC22LCRRG
Subtotal (1 box of 60 units)
MYR15,094.32
MYR251.572/unit
Temporarily out of stock
Bulgin Capacitive switch Momentary NC Illuminated, Green, Red, On-Off, IP68 Stainless Steel
  • RS Stock No. 204-8086
  • Mfr. Part No. MC19MCSGR
Subtotal (1 box of 60 units)
MYR11,880.00
MYR198.00/unit
Temporarily out of stock
Bulgin Capacitive switch Momentary NO Illuminated, Red, Green, On-Off, IP69K, IP68 Red Anodised
  • RS Stock No. 204-7887
  • Mfr. Part No. MC25MORGR
Subtotal (1 box of 60 units)
MYR15,863.70
MYR264.395/unit
Temporarily out of stock
Bulgin Capacitive switch Latching NO Illuminated, Red, Green, On-Off, IP68 Black Anodised
  • RS Stock No. 204-8095
  • Mfr. Part No. MC22LOBRG
Subtotal (1 box of 60 units)
MYR16,836.12
MYR280.602/unit
In Stock
Bulgin Capacitive switch Momentary NO Illuminated, Green, Red, SPST NC, IP69K, IP68 Black Anodised
  • RS Stock No. 208-8022
  • Mfr. Part No. MC25MOBGR
Subtotal (1 unit)
MYR347.98
MYR347.98/unit
Temporarily out of stock
Bulgin Capacitive switch Momentary NC Illuminated, Green, Red, On-Off, IP68 Stainless Steel
  • RS Stock No. 204-8097
  • Mfr. Part No. MC22MCSGR
Subtotal (1 box of 60 units)
MYR10,475.40
MYR174.59/unit
Limited stock
Assemtech CO PCB Reed Switch 1 A 400 V
  • RS Stock No. 909-2825
  • Mfr. Part No. GC1917 (80-100AT)
Subtotal (1 bag of 10 units)
MYR551.79
MYR55.179/unit
Temporarily out of stock
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0413
  • Mfr. Part No. OHD1-40M
Subtotal (1 tray of 60 units)
MYR1,346.58
MYR22.443/unit
Temporarily out of stock
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0519
  • Mfr. Part No. OHD1-35M
Subtotal (1 tray of 60 units)
MYR1,365.90
MYR22.765/unit
Temporarily out of stock
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS Stock No. 188-0424
  • Mfr. Part No. OHD1-90M
Subtotal (1 tray of 60 units)
MYR1,492.74
MYR24.879/unit
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