professional original device supplier

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    email address

    coco20.xu@gmail.com
  • Product Categories

    Our products include: chip varistor, chip thermistor, chip capacitor, PTC self recovery fuse, TVS transient voltage suppression diode, ESD electrostatic protection product.

    • latest products
    • hot products
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      chip Varistor
      Surge SMD Varistor 1210-471H

      voltage:12V,24V,27V,30V,33V,39V,42V,47V,56V,68V,76V,82V,100V,120V,170V,240V,270V,390V,430v,470V size :(3.2*2.5) Surge passing capacity: 1KV-1.5KV

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      NTC Thermistor
      SMD NTC Thermistor 0603

      sizes of 0201、0402、0603、0805、1206. The products' B values are 1K, 2.2K, 3.3K, 4.7K, 5.0K, 6.8K, 10K, 22K, 33K, 47K, 56K, 68K, 100K, 220K, 340K, 470K, 680K, 1M,

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      Capacitor
      SMD Capacitor 1206-104-250V (MLCC)

      sizes 0402, 0603, 0805, 1206, 1210, 1808, 1812, 2220, 2225 more voltages of 6.3V-6000V capacity: 100PF—220uF

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      Varistor
      Lighting product varistor 10D471K

      Product size:05D,07D,10D,14D,20D,25D voltage:18V-1800V surge:100A-20KA

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      Gas Discharge Tube
      SMD Gas Discharge Tubes 3216

      More sizes 3216, 4532, 5042, 8360 Voltage: 150V, 200V, 300V, 350V, 400V, 600V,800V,1000V Max through-flow: 500A-20000A

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      TVS
      TVS Diodes SMAJ250A

      Package: DO-214AA Voltage: 5V-440V, unidirectional and bidirectional More Packages: SOT-23, SOT-26, SOT-363, SOT143, SOT-563, SOP-8, SOP-10, SOP16, SMAJ, SMBJ, SMCJ, SMDJ, 5KP, and so on

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      FUSE
      littelfuse SMD PPTC1812-050

      PPTC in size of 0603, 0805, 1206, 1210, 1812, 2920, current 0.05A-4A, Product size (4.5*3.2), current

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      NTC Thermistor
      MF72 NTC thermistor

      MF72 power NTC thermistor More size specifications: 10D-5,5D-7,5D-9,5D-11,10D-11,5D-13,5D-15

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      NTC Thermistor
      MF72 NTC thermistor

      MF72 power NTC thermistor More size specifications: 10D-5,5D-7,5D-9,5D-11,10D-11,5D-13,5D-15

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      Varistor
      Lighting product varistor 10D471K

      Product size:05D,07D,10D,14D,20D,25D voltage:18V-1800V surge:100A-20KA

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      Gas Discharge Tube
      SMD Gas Discharge Tubes 3216

      More sizes 3216, 4532, 5042, 8360 Voltage: 150V, 200V, 300V, 350V, 400V, 600V,800V,1000V Max through-flow: 500A-20000A

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      TVS
      TVS Diodes SMAJ250A

      Package: DO-214AA Voltage: 5V-440V, unidirectional and bidirectional More Packages: SOT-23, SOT-26, SOT-363, SOT143, SOT-563, SOP-8, SOP-10, SOP16, SMAJ, SMBJ, SMCJ, SMDJ, 5KP, and so on

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      FUSE
      littelfuse SMD PPTC1812-050

      PPTC in size of 0603, 0805, 1206, 1210, 1812, 2920, current 0.05A-4A, Product size (4.5*3.2), current

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      Capacitor
      SMD Capacitor 1206-104-250V (MLCC)

      sizes 0402, 0603, 0805, 1206, 1210, 1808, 1812, 2220, 2225 more voltages of 6.3V-6000V capacity: 100PF—220uF

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      NTC Thermistor
      SMD NTC Thermistor 0603

      sizes of 0201、0402、0603、0805、1206. The products' B values are 1K, 2.2K, 3.3K, 4.7K, 5.0K, 6.8K, 10K, 22K, 33K, 47K, 56K, 68K, 100K, 220K, 340K, 470K, 680K, 1M,

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      chip Varistor
      Surge SMD Varistor 1210-471H

      voltage:12V,24V,27V,30V,33V,39V,42V,47V,56V,68V,76V,82V,100V,120V,170V,240V,270V,390V,430v,470V size :(3.2*2.5) Surge passing capacity: 1KV-1.5KV

    About us

    Overguardtech. The company specializes in high-tech enterprises in the development and production of electronic components. The company specializes in overvoltage, overcurrent, anti static protection products. The company's products include varistor, thermistor, capacitor, fuse, TVS tube and ESD static Electric protection series, sales market covers Taiwan, mainland, Singapore, Southeast Asia, Europe and America. Our products include: chip varistor, patch thermistor, chip capacitor, PTC self recovery fuse, TVS transient voltage suppression diode, ESD electrostatic protection product.

    About us
    latest news
    The function of the patch capacitor in the circuit
    Dec 10,2018 The function of the patch capacitor in the circuit

    In DC circuit, capacitors are equivalent to circuit breakers. Capacitor is a component that can store charge, and it is also one of the most commonly

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    Overguardtech electronic acquisition of bestbright trademark
    Aug 27,2025 Overguardtech electronic acquisition of bestbright trademark

    Overguardtech electronic by People's Republic of China Administration for Industry and Commerce Trademark Office audit, bestbright trademark certifica

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    The effect of static current and its influence on triode
    Dec 06,2018 The effect of static current and its influence on triode

    1.The explanation of the static current action of triode The role of the bias circuit is to provide the base DC current for the transistor, which is a

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