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

1029 Products showing for Capacitive, Magnetic and Piezo Switches

Sort By
1 of 52
Last RS stock
Cynergy3 SPST PCB Reed Switch 300 mA 300 V
  • RS Stock No. 229-3670
  • Mfr. Part No. TRA291G/20-30
Subtotal (1 unit)
HK$24.70
HK$24.70/unit
In Stock
Assemtech Reed Switch Magnet for use with Reed switch
  • RS Stock No. 362-2467
  • Mfr. Part No. M1219-5
Subtotal (1 unit)
HK$20.70
HK$20.70/unit
In Stock
RS PRO 1 NC Through Hole Reed Switch 500 mA 175 V
  • RS Stock No. 265-2258
Subtotal (1 unit)
HK$77.50
HK$77.50/unit
In Stock
Assemtech SPNO PCB Reed Switch 1 A 250 V ac
  • RS Stock No. 362-2546
  • Mfr. Part No. RI-46A
Subtotal (1 unit)
HK$9.70
HK$9.70/unit
In Stock
APEM Illuminated Piezo Switch, Momentary, SPST, IP68 Flying Lead, 200mA, 75 °C, -40 °C
  • RS Stock No. 691-9663
  • Mfr. Part No. PBAR9AFB000A0W
Subtotal (1 unit)
HK$458.00
HK$458.00/unit
Limited stock
Cynergy3 SPST PCB Reed Switch 500 mA 150 V ac/dc
  • RS Stock No. 229-3692
  • Mfr. Part No. TRA294G/20-30
Subtotal (1 unit)
HK$27.90
HK$27.90/unit
Temporarily out of stock
Bulgin Capacitive switch Latching NO Illuminated, Red, Green, On-Off, IP68 Stainless Steel
  • RS Stock No. 204-8102
  • Mfr. Part No. MC22LOSGR
Subtotal (1 box of 60 units)
HK$22,978.38
HK$382.973/unit
In Stock
Assemtech SPST-NO PCB Reed Switch 350 mA 175 V
  • RS Stock No. 909-2682
  • Mfr. Part No. RI-80B
Subtotal (1 bag of 10 units)
HK$260.00
HK$26.00/unit
In Stock
Assemtech SPST-NO PCB Reed Switch 500 mA 200 V
  • RS Stock No. 909-2639
  • Mfr. Part No. RI-27 Kit
Subtotal (1 kit)
HK$34.30
HK$34.30/kit
In Stock
Assemtech SPNO PCB Reed Switch 500 mA 140 V
  • RS Stock No. 909-2705
  • Mfr. Part No. GC2522 (10-20AT)
Subtotal (1 bag of 10 units)
HK$119.10
HK$11.91/unit
In Stock
RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69 Flexible Wire, 200mA, 75 °C, -20 °C Natural
  • RS Stock No. 259-1161
Subtotal (1 unit)
HK$797.22
HK$797.22/unit
In Stock
RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69 Cable, 1A, 75 °C, -20 °C Natural
  • RS Stock No. 259-1150
Subtotal (1 unit)
HK$1,194.76
HK$1,194.76/unit
In Stock
Bulgin Capacitive switch Momentary NO Illuminated, Red, Green, Latching, Momentary, IP68, IP69K Stainless Steel
  • RS Stock No. 208-8004
  • Mfr. Part No. MC25MOSGR
Subtotal (1 unit)
HK$539.80
HK$539.80/unit
Temporarily out of stock
Bulgin Capacitive switch Latching NC Illuminated, Red, Green, SPST NC, IP68, IP69K Red Anodised
  • RS Stock No. 204-7869
  • Mfr. Part No. MC25LCRGR
Subtotal (1 box of 60 units)
HK$29,405.70
HK$490.095/unit
In Stock
Littelfuse PCB Surface Mount Reed Switch 0.5 A 200 V
  • RS Stock No. 905-8904
  • Mfr. Part No. MDSM-4R-12-18
Subtotal (1 bag of 5 units)
HK$52.50
HK$10.50/unit
Currently unavailable
Cynergy3 SPST Reed Switch 5 A 250 V ac/dc
  • RS Stock No. 229-3709
  • Mfr. Part No. DRA283/60-80
Subtotal (1 unit)
HK$123.60
HK$123.60/unit
In Stock
Schurter Piezo Switch, IP67 Solder, 100mA, 60 °C, -20 °C Silver
  • RS Stock No. 456-1868
  • Mfr. Part No. 1241.2411.8
Subtotal (1 unit)
HK$276.40
HK$276.40/unit
In Stock
Schurter Piezo Switch, Momentary, SPST, IP67, IP69K Tab, 100mA, 85 °C, -40 °C Natural
  • RS Stock No. 738-5500
  • Mfr. Part No. 1241.5003
Subtotal (1 unit)
HK$279.50
HK$279.50/unit
In Stock
RS PRO SPCO Through Hole Reed Switch 500 mA 175 V
  • RS Stock No. 265-2246
Subtotal (1 unit)
HK$31.10
HK$31.10/unit
In Stock
ifm electronic Capacitive switch, IP69
  • RS Stock No. 810-0218
  • Mfr. Part No. KT5010
Subtotal (1 unit)
HK$1,724.50
HK$1,724.50/unit
1
2
3
52
Results per page

Related links