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Littelfuse touts smallest gas discharge tube

Posted: 01 Nov 2013     Print Version  Bookmark and Share

Keywords:Littelfuse  gas discharge tube  GDT  SE Series  EIA 1206 package 

Littelfuse Inc. has unveiled a line of gas discharge tube (GDT) devices in a square, miniature EIA 1206 package, flaunted by the company as the smallest GDT device on the market. The ultra-low capacitance of SE Series GDTs helps ensure high transmission speeds in broadband applications, noted the company.

The devices respond rapidly to fast-rising transients to enhance the protection of sensitive circuitry. The SE Series' excellent stability in multiple pulse duty cycles helps circuit designers boost reliability in applications designed to protect against over-voltage surge, Littelfuse stated. Under normal operating conditions, GDTs maintain a high resistance state, but when a voltage surge occurs (such as due to a lighting surge disturbance), they will discharge from open to short status to provide robust over-voltage protection. When the fault is removed, the GDT returns to a high resistance state and restores the circuit to normal operation. SE Series GDTs are geared for a range of applications including security system components such as satellite and CATV equipment, CCTV equipment, analogue video and set-top boxes, and RS-485 and Ethernet applications.

The devices claim to optimise the use of board space with a low-profile, ultra-small (3.2 x 1.6 x 1.6mm) surface-mount package. They also allow for higher transmission speeds in broadband applications due to <0.5pF capacitance and enhance protection for sensitive circuits with excellent response to fast-rising transients. Additionally, the devices help to preserve signal integrity due to ultra-low insertion loss and boost reliability in applications designed to protect against over-voltage surge because of its excellent stability on multiple pulse duty cycles.

The SE Series GDTs are available in EIA 1206 packaging in reels of 3,000. Samples are available now. Sample requests can be placed through authorised Littelfuse distributors worldwide.

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