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    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 Switches
    Reed Switches
    Thumbwheel Switches
    Thumbwheel Switches

    1030 Products showing for Capacitive, Magnetic and Piezo Switches

    1 of 52
    Sensata Cynergy3 SPST Reed Switch, 1A 230V ac/dc
    • RS Stock No. 229-3658
    • Mfr. Part No. SRA200G/20-30
    Each
    PHP335.54
    KEMET SPST Through Hole Reed Switch, 270mA 264V ac
    • RS Stock No. 188-0559
    • Mfr. Part No. TRS5-10BLRVU
    Each (In a Lot of 50)
    PHP1,344.418
    Saia-Burgess Piezo Switch, Momentary, IP67, Through Hole, -40 → +105°C Green
    • RS Stock No. 665-629
    • Mfr. Part No. 732102-691
    Each
    PHP4,090.47
    Omron Capacitive Switch NC, IP67
    • RS Stock No. 215-5320
    • Mfr. Part No. D5B-1023
    Each
    PHP6,611.91
    APEM Illuminated Piezo Switch, Momentary, Pulse, SPST, IP68, Flying Lead, 200 mA @ 24 V dc, -40 → +75°C
    • RS Stock No. 691-9590
    • Mfr. Part No. PBAR9AF0000A0G
    Each
    PHP3,902.26
    RS PRO Capacitive Switch Latching NO,Illuminated, Green, Red, IP68 Brass
    • RS Stock No. 823-2801
    Each
    PHP2,653.90
    Bulgin Illuminated Piezo Switch, Momentary, IP68, IP69K, Wire Lead, 1 A @ 24 V dc, -40 → +85°C Grey
    • RS Stock No. 124-1086
    • Mfr. Part No. MPZI022/F/RD/24
    Each
    PHP4,655.66
    Littelfuse Reed Switch
    • RS Stock No. 905-8907
    • Mfr. Part No. MDRR-DT-25-30-F
    Each (In a Bag of 5)
    PHP262.734
    Bulgin Capacitive Switch Latching NO,Illuminated, Green, Red, IP68, IP69K Stainless Steel
    • RS Stock No. 204-8179
    • Mfr. Part No. MC19LOSGR
    Each (In a Box of 60)
    PHP2,831.395
    Banner Capacitive Switch Momentary Manual,Illuminated, Green, Red, Yellow, PNP, IP69K Polycarbonate
    • RS Stock No. 295-184
    • Mfr. Part No. K50APT2GRYC3Q
    Each
    PHP12,111.37
    SMC Direct Mount Reed Switch, 20mA
    • RS Stock No. 280-9299
    • Mfr. Part No. D-A96L
    Each
    PHP1,909.07
    Banner Capacitive Switch Momentary Manual,Illuminated, Green, Red, Yellow, PNP, IP69K Polycarbonate
    • RS Stock No. 295-185
    • Mfr. Part No. K50APT2GRYF2
    Each
    PHP12,111.37
    RS PRO Illuminated Piezo Switch, Momentary, IP68
    • RS Stock No. 175-9614
    1 Pack of 1
    PHP1,952.23
    Assemtech SPST PCB Reed Switch, 1A 250V ac
    • RS Stock No. 362-2546
    • Mfr. Part No. RI-46A
    Each
    PHP66.70
    Assemtech SPDT Reed Switch, 400mA
    • RS Stock No. 909-2689
    • Mfr. Part No. RI-90
    Each (In a Bag of 10)
    PHP265.891
    RS PRO 1C Through Hole Reed Switch, 500mA 175V
    • RS Stock No. 265-2249
    1 Box of 500
    PHP171,914.51
    Bulgin Capacitive Switch Momentary NC,Illuminated, IP68 Stainless Steel
    • RS Stock No. 208-8234
    • Mfr. Part No. MC19MCSGR
    Each
    PHP2,229.88
    Banner Capacitive Switch Momentary Manual,Illuminated, Green, Red, PNP, IP69K Polycarbonate
    • RS Stock No. 295-181
    • Mfr. Part No. K50APT2GRCQ
    Each
    PHP10,698.37
    Littelfuse Miniature Reed Switch
    • RS Stock No. 905-8840
    • Mfr. Part No. HE3621A2410
    Each (In a Bag of 5)
    PHP154.044
    Littelfuse Miniature Reed Switch
    • RS Stock No. 905-8865
    • Mfr. Part No. HE751A0510
    Each (In a Bag of 5)
    PHP145.272
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