Littelfuse, Inc. recently introduced the smallest square gas discharge tube (GDT) on the market, measuring just 5.0 x 5.0 x 4.2 mm. This compact GDT offers a robust 5 kA surge capability and an ultra-low off-state capacitance of ≤0.7 pF. The SH Series GDT is specifically designed to protect against fast-rising transients caused by lightning interference, making it ideal for high-speed and high-bandwidth applications.
The low off-state capacitance ensures minimal signal loss and remains stable regardless of the voltage across the device, which is crucial for maintaining signal integrity in advanced communication systems. This makes the SH Series well-suited for applications like G.fast, xDSL, 10GbE, and Ethernet ports in telecom and datacom equipment.
In addition, the SH Series provides reliable protection for satellite coaxial cables, cable TV equipment, set-top boxes, and industrial automation interfaces such as Ethernet, RS-485, and RS-232. It also plays a key role in AC power line protection for renewable energy systems, including power inverters and variable frequency drives (VFDs).
Stephen Li, Global Product Manager for Gas Discharge Tubes at Littelfuse, stated, "The SH Series GDT is an ideal solution that meets today’s demanding surge requirements while supporting high-speed, wide-bandwidth applications. Its square body and terminal structure simplify the SMT assembly process, making it more efficient for manufacturers."
Key advantages of the SH Series include:
- High surge tolerance in a small package, perfect for high-density layouts in wireless base stations and cable modems.
- Ultra-low off-state capacitance (≤0.7pF) ensures minimal insertion loss and maintains signal quality.
- Square design and terminal layout make it easier to handle during PCB manufacturing compared to traditional cylindrical GDTs.
The SH Series GDTs are available in tape and reel packaging, with 900 units per reel. Free samples can be obtained through authorized Littelfuse distributors worldwide. For more information or to locate a distributor, visit Littelfuse.com.
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