R & D strength

The company's technology and products cover: Protection devices (protection devices), Thyristor (Thyristor), Rectifier diodes (Rectifier). It maintains a leading position in many technical fields, such as multi-layer laminated technology, high junction temperature and low leakage current technology, multi-layer passivation process, super anti-interference thyristor technology. With the accumulation of many core technical personnel in the fields of design and manufacturing, Liown can provide customers with targeted chip product design and systematic application solutions.


Semiconductor class

  • Transient Voltage Suppressor Diode (TVS)

    Transient Voltage Suppressor Diode (TVS)

    Transient voltage suppressor diode, also known as silicon avalanche diode, has a larger PN junction area and greater co-current capability than ordinary diodes. It is widely used in transient voltage protection of electronic components.

    Reverse standoff voltage:3.3V~510V

    Peak pulse power:200W~30KW

    Peak pulse current: Up to 30KA (8/20μs) 

    High junction temperature: up to 175℃


  • TVS Diodes Arrays (ESD)

    TVS Diodes Arrays (ESD)

    The transient voltage suppressor diode arrays are designed to protect digital and analog signal lines from damage caused by TVS Diodes Arrays (ESD), electrical fast transient (EFT), and surge currents caused by lightning strikes.

    Junction capacitance: min to 0.3pF 

    Size: min to 0.6*0.3mm

    Package: diverse, high integration

    Peak pulse power:45W~6500W(8/20μs)

  • Thyristor surge suppressor (TSS)

    Thyristor surge suppressor (TSS)

    Thyristor surge suppressor is a semiconductor switch tube based on thyristor process, which has higher surge protection and lower residual voltage than TVS, and is used for various communication ports.

    Cut-off voltage: 6V~600V    Surge rating: 2/4/6KV    Junction capacitance: 15pF ~ 150pF    Package: SMA, SMB, SOP8

Non-semiconductor

  • Gas Discharge Tube(GDT)

    Gas Discharge Tube(GDT)

    Gas Discharge Tube is a switch type overvoltage protector.Its working principle is based on gap discharge of inert gas, and it can withstand extremely high transient surges.

    Spark-over Voltage:75V~6KV

    Surge capacity: up to 100KA(8/20us) 

    Size: 2-pole & 3-pole, multi-size 

    Package: Radial Lead, SMD 

    Capacitance value: 0.5~25 pF


  • Glass gas discharge Tube (SPG)

    Glass gas discharge Tube (SPG)

    SPG has the advantages of both ceramic gas discharge tube and semiconductor discharge tube, and has the advantages of high surge capacity, small size and fast reaction speed.

    Voltage range:140~4000V 

    Surge current:3KA(8/20uS) 

    Small size:中1.4mm~ф4.1mm

    High reliability: high temperature and humidity resistance