Littelfuse introduces a three-terminal GDT in a smaller package size to protect communications equipment from fast-rising transients

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Littelfuse , a global leader in circuit protection , today announced the introduction of the SL1010A series of gas discharge tubes (GDT). This small-sized three-terminal surface mount device protects a wide range of communications equipment from fast-rising transient voltages typically caused by lightning strikes. The SL1010A Series GDT can withstand a lightning surge current of 5kA in an 8/20μs environment. Its off-state capacitance as low as 1.5pF minimizes insertion loss and helps maintain signal integrity in data communication lines. The low arc voltage (~10V) reduces heat buildup in the event of prolonged power failure.

With a diameter of only 5 mm, the three-terminal SL1010A Series GDT is ideal for small package applications requiring high energy tolerance and compact size. Applications include new telecommunications systems with micro-components, last-mile telecom equipment such as ultra-fast DSL, industrial RS-485, Power over Ethernet, and home gateways.

Stephen Li, global product manager for GDT, SL1010A series, Littelfuse , said: "The three-terminal GDT in the SL1010A series offers circuit designers a more compact solution than two independent GDTs. Just as important as their low capacitance is the capacitor. It does not change due to changes in DC and signal voltage. This eliminates distortion effects caused by changing capacitance."

The SL1010A Series GDT has three key advantages:

The SL1010A series is small in size and high in energy tolerance, making it ideal for small package applications requiring a minimum form factor.

The SL1010A GDT has an off-state capacitance of less than 1.5pF, ensuring minimal insertion loss and helping to maintain signal integrity.

Low arc voltage to avoid heat buildup caused by high on-state voltage

? Three-terminal design with Tin/Ring/Gnd symmetry reduces the frequency of vertical mode to landscape mode transitions in the event of a surge

? SL1010A series adopts RoHS-compliant lead-free design and is very environmentally friendly

Availability

The SL1010A series GDT has a minimum order quantity of 900 and is available in tape and reel packaging. Samples are available from authorized Littelfuse distributors around the world.