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 產品顯示為 Capacitive, Magnetic and Piezo Switches

排序方式
1 的 52
有庫存
Littelfuse PCB Reed Switch 0.5 A 200 V
  • RS庫存編號 905-8916
  • 製造零件編號 MDSR-10-15-20
小計（1 袋，共 5 件）
HK$51.60
HK$10.32/件
有庫存
Assemtech SPNO PCB Reed Switch 500 mA 140 V
  • RS庫存編號 909-2705
  • 製造零件編號 GC2522 (10-20AT)
小計（1 袋，共 10 件）
HK$119.10
HK$11.91/件
有庫存
Assemtech SPST PCB Reed Switch 500 mA 200 V dc
  • RS庫存編號 362-2518
  • 製造零件編號 RI-03A
小計（1 件）
HK$7.90
HK$7.90/件
有庫存
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS庫存編號 188-0818
  • 製造零件編號 OHD3-40M
小計（1 件）
HK$51.50
HK$51.50/件
有庫存
Cynergy3 SPCO PCB Reed Switch 250 mA 175 V ac/dc
  • RS庫存編號 394-428
  • 製造零件編號 TRC200S/20-30
小計（1 件）
HK$153.00
HK$153.00/件
有庫存
Cynergy3 SPST PCB Reed Switch 10 mA 30 V ac/dc
  • RS庫存編號 118-7120
  • 製造零件編號 VDA200H/5-15
小計（1 件）
HK$114.60
HK$114.60/件
暫時缺貨
APEM Capacitive switch Latching Latching, Momentary Illuminated, Red, Green, NPN, IP68, IP69K
  • RS庫存編號 205-8748
  • 製造零件編號 CPB3210000EGSC
小計（1 件）
HK$588.90
HK$588.90/件
有庫存
Schurter Capacitive switch Latching Latching, Momentary Illuminated, RGB, OptoMOS Relay, IP67 Stainless Steel
  • RS庫存編號 174-5485
  • 製造零件編號 3-101-404
小計（1 件）
HK$514.90
HK$514.90/件
暫時缺貨
KEMET SPST Through Hole Reed Switch 500 mA 140 V ac
  • RS庫存編號 188-0966
  • 製造零件編號 TRS5-105BLRU
小計（1 件）
HK$94.40
HK$94.40/件
有限的庫存
Littelfuse Axial Miniature Reed Switch 0.5 A 200 V
  • RS庫存編號 905-8875
  • 製造零件編號 Flex-14-15-20
小計（1 袋，共 5 件）
HK$37.60
HK$7.52/件
暫時缺貨
Bulgin Capacitive switch Latching NO Illuminated, Green, Red, On-Off, IP68, IP69 Stainless Steel
  • RS庫存編號 204-8106
  • 製造零件編號 MC22MORGR
小計（1 盒，共 60 件）
HK$22,156.98
HK$369.283/件
製造商存貨
WIKA SPST Through Hole Magnetic Reed Switch 1 A 230 V
  • RS庫存編號 267-6364
  • 製造零件編號 3000380
小計（1 件）
HK$780.66
HK$780.66/件
製造商存貨
WIKA SPST Through Hole Magnetic Reed Switch 1 A 230 V
  • RS庫存編號 267-6363
  • 製造零件編號 14361511
小計（1 件）
HK$739.05
HK$739.05/件
有限的庫存
Cynergy3 SPST PCB Reed Switch 1 A 230 V ac/dc
  • RS庫存編號 229-3658
  • 製造零件編號 SRA200G/20-30
小計（1 件）
HK$52.90
HK$52.90/件
有庫存
Assemtech Reed Switch Magnet for use with Reed switch
  • RS庫存編號 362-2401
  • 製造零件編號 M1218
小計（1 件）
HK$11.10
HK$11.10/件
最後的 RS 庫存
Littelfuse PCB Miniature Reed Switch 0.5 A 200 V
  • RS庫存編號 905-8859
  • 製造零件編號 HE721C1200
小計（1 袋，共 5 件）
HK$175.60
HK$35.12/件
有庫存
Assemtech SPNO PCB Reed Switch 1 A 250 V ac
  • RS庫存編號 362-2546
  • 製造零件編號 RI-46A
小計（1 件）
HK$8.90
HK$8.90/件
有庫存
Infineon Hall Effect Sensor 1.6 mA 25 mA Unipolar switch Solder Pin Open Drain 3G, 4G, 107 °C, -40 °C, 32V, 3 V
  • RS庫存編號 244-2285
  • 製造零件編號 TLE49646MXTSA1
小計（1 包，共 5 件）
HK$19.30
HK$3.86/件
暫時缺貨
RS PRO SPCO Through Hole Reed Switch 500 mA 170 V
  • RS庫存編號 265-2235
小計（1 盒，共 500 件）
HK$8,122.40
HK$8,122.40/盒
有限的庫存
Cynergy3 SPST PCB Reed Switch 500 mA 150 V ac/dc
  • RS庫存編號 229-3692
  • 製造零件編號 TRA294G/20-30
小計（1 件）
HK$27.90
HK$27.90/件
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