Gas Discharge Tube (GDT)

Over Current Protection（59）
- Miniature Fuses（26）
  Miniature Fuses
  Miniature Fuses is an Over Current Protection device. Its resistance is very low. When the circuit works normally, it is equivalent to a wire, which can conduct the circuit continuously and stably. When the current fluctuates due to circuit instability or external interference, it should also be able to withstand a certain range of overload. Only when overload or short circuit happens, Miniature Fuses can blow fast to protect the circuit. SETsafe | SETfuse Miniature Fuses is widely used in all kinds of electrical equipment. It has a variety of mounting modes, compact structure, reliable and stable performance. Technical parameters of SETsafe | SETfuse Miniature Fuses: Its rated current ranges from 0.1 A to 40 A, rated voltage ranges from 125 VAC to 500 VAC, and from 24 VDC to 600 VDC, complies with RoHS and REACH, and is approved by cURus, VDE, PSE, CCC, CQC, KC, TUV.
- Low Voltage Fuses (LV Fuses)（33）

Active Protection（16）
Active Protection
Active Protection

Accessories（2）
Accessories
Accessories
- For Over Current Protection Products（2）
  For Over Current Protection Products
  For Over Current Protection Products
  - Fuse Clip - for Cartridge Fuse-links (CFL)（1）
    Fuse Clip - for Cartridge Fuse-links (CFL)
    Fuse Clip - for Cartridge Fuse-links (CFL)
  - Fuse Holder - Suitable for Photovoltaics (PV)（1）
    Fuse Holder - Suitable for Photovoltaics (PV)
    Fuse Holder - Suitable for Photovoltaics (PV)

Gas Discharge Tube (GDT)
Applications

Gas Discharge Tube (GDT)

Manufacturer
Overview
Glossary
Mounting Style
Termination Style
Applications
Brand
Tradename
Ad
Catalog
Production Line

D.C. Spark-Over Voltage

Surge Withstand Capability

Impulse Discharge Current

Mounting Style
- Reset
- DIP
- SMD

No record

Xiamen SET Electronics Co., Ltd.

The Gas Discharge Tube(GDT) is a protective device which is filled with certain proportion of noble gas, or mixed gas or other discharge media in the space between metal electrodes and metalized ceramics,and then sealed at high temperature to form a single-gap or multi-gap switch type protective device.When the protected circuit or equipment suffers to surge, GDT will change from high impedance state to low impedance state and release the surge energy to reduce the residual voltage of the circuit, and then protect the equipment or humanbody from the hazard of transient overvoltage.

SETsafe | SETfuse GDT products have a voltage range of 70 to 4500 V and a surge current (at 8 / 20 μs) range of 0.5 to 200 kA. It is widely used in the overvoltage protection of signals, power supplies, and various ports; safety certificates include UL, cUL, TUV, and it also meets RoHS & REACH requirements.

V_s

D.C. Spark-over Voltage

The voltage at which the GDT sparks over with slowly increasing d.c. voltage.

— (IEC 61643-311)

Impulse Spark-over Voltage

The highest Voltage which appears across the terminals of a GDT in the period between the application of an impulse of given wave-shape and the time when current begins to flow.

— (ITU-T K.12)

V_a

Arc Voltage

Voltage drop across the GDT during arc current flow.

— (IEC 61643-311)

V_gl

Glow Voltage

The peak value of the voltage drop across the GDT when a glow-current is flowing, It is sometimes called the glow mode voltage.

— (ITU-T K.12)

8/20 μs

8/20 Current Impulse

Current impulse with a nominal virtual front time of 8 µs and a nominal time to half-value of 20 µs.

— (IEC 61643-11)

1.2/50 μs

1.2/50 Voltage Impulse

Voltage impulse with a nominal virtual front time of 1.2 µs and a nominal time to half-value of 50 µs.

— (IEC 61643-11)

Alternating Discharge Current

The r.m.s. value of an approximately sinusoidal alternating current passing through the GDT.

— (ITU-T K.12)

I_n

Nominal Discharge Current

Crest value of the current through the GDT having a current waveshape of 8/20 µs.

— (IEC 61643-11)

I_max

Maximum Discharge Current

Crest value of a current through the GDT having an 8/20 µs waveshape and magnitude according to the manufacturers specification. I_max is equal to or greater than In.

— (IEC 61643-11)

Through Hole, Surface Mount

SMD, Axial, Radial

Street Lighting (Power Supply, N-PE Protection in AC Power)

Application SETsafe | SETfuse Product Series:

SE Series

SF Series

New Energy (WLAN xDSL, Power Supply, N-PE Protection in AC Power)

Application SETsafe | SETfuse Product Series:

SE Series

SC Series

Communication (WLAN xDSL, CATV, MDF, BTS(Base Station), Antenna and RF, N-PE Protection in AC Power)