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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In Stock
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-0868
  • Mfr. Part No. OHD5R-105B
Subtotal (1 unit)
MYR28.25
MYR28.25/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-0859
  • Mfr. Part No. OHD5R-100B
Subtotal (1 unit)
MYR30.35
MYR30.35/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-0985
  • Mfr. Part No. OHD5R-110B
Subtotal (1 unit)
MYR28.79
MYR28.79/unit
In Stock
Assemtech SPNO PCB Reed Switch 1 A 230 V ac/dc
  • RS Stock No. 362-2530
  • Mfr. Part No. 2502-2722-020
Subtotal (1 unit)
MYR10.37
MYR10.37/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Red, Green, IO-Link, IP69K
  • RS Stock No. 227-0844
  • Mfr. Part No. 84-ASKS-B12-049E
Subtotal (1 unit)
MYR304.99
MYR304.99/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
In Stock
Littelfuse Surface Reed Sensor 1.5 A
  • RS Stock No. 283-5604
  • Mfr. Part No. 59025-010
Subtotal (1 unit)
MYR19.45
MYR19.45/unit
In Stock
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-1014
  • Mfr. Part No. OHD5R-75B
Subtotal (1 unit)
MYR28.05
MYR28.05/unit
In Stock
APEM Piezo Switch, Momentary, SPST, IP68 Wire, 200mA, 75 °C, -40 °C Natural
  • RS Stock No. 224-344
  • Mfr. Part No. PBAR2AF0000
Subtotal (1 unit)
MYR195.01
MYR195.01/unit
In Stock
WIKA SPST Through Hole Magnetic Reed Switch 1 A 230 V
  • RS Stock No. 267-6370
  • Mfr. Part No. 48766879
Subtotal (1 unit)
MYR241.30
MYR241.30/unit
In Stock
ifm electronic Capacitive Proximity Sensor, Red, Green, PNP, IP67, IP69K
  • RS Stock No. 101-238
  • Mfr. Part No. KT5001
Subtotal (1 unit)
MYR1,147.09
MYR1,147.09/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Green, IO-Link, IP69K
  • RS Stock No. 227-0836
  • Mfr. Part No. 84-ACKS-C12-04C1
Subtotal (1 unit)
MYR523.11
MYR523.11/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Green, IO-Link, IP69K
  • RS Stock No. 227-0838
  • Mfr. Part No. 84-ACKS-C17-04C4
Subtotal (1 unit)
MYR523.11
MYR523.11/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Green, IO-Link, IP69K
  • RS Stock No. 227-0839
  • Mfr. Part No. 84-ACKS-C18-04C5
Subtotal (1 unit)
MYR523.11
MYR523.11/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Green, IO-Link, IP69K
  • RS Stock No. 227-0840
  • Mfr. Part No. 84-ACKS-C19-04C6
Subtotal (1 unit)
MYR523.11
MYR523.11/unit
In Stock
EAO Capacitive switch Latching NO Illuminated, Green, Red, IO-Link, IP69K
  • RS Stock No. 227-0845
  • Mfr. Part No. 84-ASKS-B13-049F
Subtotal (1 unit)
MYR531.92
MYR531.92/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-0909
  • Mfr. Part No. OHD5R-50B
Subtotal (1 unit)
MYR26.52
MYR26.52/unit
Currently unavailable
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS Stock No. 188-1032
  • Mfr. Part No. OHD5R-85B
Subtotal (1 unit)
MYR27.96
MYR27.96/unit
Currently unavailable
Banner Capacitive switch Momentary Manual Illuminated, Red, Yellow, Green, PNP, IP69K Polycarbonate
  • RS Stock No. 295-184
  • Mfr. Part No. K50APT2GRYC3Q
Subtotal (1 unit)
MYR1,139.17
MYR1,139.17/unit
Currently unavailable
Banner Capacitive switch Momentary Manual Illuminated, Yellow, Green, Red, PNP, IP69K Polycarbonate
  • RS Stock No. 295-196
  • Mfr. Part No. K50APTGYRF2Q
Subtotal (1 unit)
MYR1,160.84
MYR1,160.84/unit
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