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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 Switch Magnets
    Reed Switch Magnets
    Reed Switches
    Reed Switches
    Thumbwheel Switches
    Thumbwheel Switches

    1015 Products showing for Capacitive, Magnetic and Piezo Switches

    1 of 51
    Assemtech SPST Reed Switch, 1A 230V ac/dc
    • RS Stock No. 362-2530
    • Mfr. Part No. 2502-2722-020
    Each
    TWD44.00
    APEM Piezo Switch, Momentary, Pulse, SPST, IP68, Through Hole, 200 mA @ 24 V dc, -40 → +75°C
    • RS Stock No. 691-9477
    • Mfr. Part No. PBAT5AF2000
    Each
    TWD1,264.00
    APEM Illuminated Piezo Switch, Momentary, Pulse, SPST, IP68, Flying Lead, 200 mA @ 24 V dc, -40 → +75°C
    • RS Stock No. 691-9663
    • Mfr. Part No. PBAR9AFB000A0W
    Each
    TWD1,946.00
    RS PRO Illuminated Piezo Switch, Momentary, IP68
    • RS Stock No. 175-9533
    1 Pack of 1
    TWD1,559.00
    Celduc 1 C/O Reed Switch, 250mA 100V dc
    • RS Stock No. 161-5760
    • Mfr. Part No. CG211525
    Each (In a Pack of 5)
    TWD144.00
    APEM Illuminated Piezo Switch, Momentary, Pulse, SPST, IP68, Flying Lead, 200 mA @ 24 V dc, -40 → +75°C
    • RS Stock No. 691-9600
    • Mfr. Part No. PBAR9AF0000A2A
    Each
    TWD1,994.00
    APEM Capacitive Switch Latching,Illuminated, Red, NPN
    • RS Stock No. 195-8744
    • Mfr. Part No. CG211AP0RC
    Each
    TWD1,068.00
    Assemtech SPST Reed Switch, 3A
    • RS Stock No. 909-2812
    • Mfr. Part No. GC1513 (70-80AT)
    Each (In a Bag of 10)
    TWD194.00
    Sensata Cynergy3 SPST Reed Switch, 1A 230V ac/dc
    • RS Stock No. 229-3658
    • Mfr. Part No. SRA200G/20-30
    Each
    TWD136.00
    Suregrip IP66, IP67 Hall Effect Switch 12mA Lever Solder Tab Spring Return, -40 → +70°C, 4.9 → 5.1 V dc
    • RS Stock No. 122-8507
    • Mfr. Part No. SM2-P1-3MO
    Each
    TWD6,288.00
    APEM Capacitive Switch Momentary, NPN
    • RS Stock No. 195-8739
    • Mfr. Part No. CG111A000
    Each
    TWD879.00
    Omron Capacitive Switch NC, IP67
    • RS Stock No. 215-5320
    • Mfr. Part No. D5B-1023
    Each
    TWD3,667.00
    Assemtech SPST Reed Switch, 3A 1000V ac/dc
    • RS Stock No. 362-2552
    • Mfr. Part No. 2202-1513-060
    Each
    TWD157.00
    DiodesZetex Hall Effect Switch 4mA 60mA Solder, Through Hole Open Drain, -40 → 150°C, 3 → 28 V
    • RS Stock No. 246-7395
    • Mfr. Part No. AH3762Q-P-B
    Each (In a Pack of 10)
    TWD19.60
    APEM Capacitive Switch Momentary,Illuminated, Green, Red, NPN, IP68, IP69K
    • RS Stock No. 205-8736
    • Mfr. Part No. CPB1110000NGSS
    Each
    TWD1,713.00
    RS PRO Illuminated Piezo Switch, Momentary, IP68
    • RS Stock No. 175-9614
    1 Pack of 1
    TWD1,065.00
    APEM Piezo Switch, SPST, IP68, Flying Lead, 200 mA @ 24 V dc, -40 → +75°C
    • RS Stock No. 499-4634
    • Mfr. Part No. PBAR1AF2000
    Each
    TWD1,302.00
    RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69, Flexible Wire, 200mA, -20 → +75°C Natural
    • RS Stock No. 259-1141
    Each
    TWD1,704.00
    RS PRO 1C Through Hole Reed Switch, 500mA 175V
    • RS Stock No. 265-2248
    Each
    TWD130.00
    Otto IP68S Through Hole Thumbwheel Switch Thumbwheel
    • RS Stock No. 737-3774
    • Mfr. Part No. HTWM-1B12A22
    Each
    TWD4,166.00
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