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New BI Tech line card protection modules protect up to 12 lines

Posted: 12 Jul 2005 ?? ?Print Version ?Bookmark and Share

Keywords:tt electronics? bi technologies? protection module? t1? e1?

Suits T1/E1 line card circuits in CO appsTT Electronics BI Technologies has developed a series of telecom line protection modules designed for T1/E1 line card circuits in central office (CO) and customer premises equipment (CPE) applications that protect up to 12 signal lines in a space-saving package.

These new modules provide both lightning surge and power cross protection that meets or exceeds the stringent requirements of Telcordia GR-1089 and UL 1950 standards in a high-density package designed to conserve space on tightly packed line cards.

"Our protection circuits are implemented on ceramic substrates, which provide superior thermal and electrical breakdown characteristics, as well as superior moisture resistance than conventional FR4 circuit board material," said Mike Ochoa-Hougan, hybrid microcircuit product manager for BI Technologies Electronic Components Division, in a statement.

The new line protection modules can also be custom designed to develop modules from one to twelve line pairs in addition to specific requirements for protection performance, PC-board footprint and packaging options such as through-hole or surface-mount types, said the company. Configuration options include both grounded and ungrounded tip and ring circuits.

Typical protection levels are 120Vac/25A for power cross, and lightning surge (metallic) of 800V/100A for 2/10?s under the Telcordia GR-1089 and UL-1950 standards. These modules feature self-resetting line fuses, which eliminate field service calls to replace blown conventional fuses. In addition, integral surge resistors dissipate heat more effectively than leaded devices and provide enhanced line balance because they are batch processed on a common substrate for superior matching, according to the company.

Typical pricing for the line protection modules in telecom volumes is approximately $1.50 per line. Delivery is eight to 12 weeks depending on the design.

- Gina Roos

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