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issue: March 2003 APPLIANCE Magazine

Technology Report
Low-Profile SMT Shield Lock Connector


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A new family of SMT one-piece shield lock connectors from AVX Corporation is said to be specifically designed to meet the miniaturization standards of the portable equipment marketplace.

According to David Schedin, product manager, AVX's 8069 series shield lock connectors allow design and production engineers to install and remove RF shielding without the need for labor-intensive soldering or resoldering.

Designated the 8069 Series, the new connector family is specifically designed to lock RF shielding cans to the printed circuit board (PCB). According to the company, the new series extends the AVX connector range while addressing the needs of design and production engineers who need to access components housed under an RF shield. Applications include cellular phones, notebook computers, PDAs, and other portable electronic devices that require shielding.

"Traditionally, RF shielding cans have been hard-soldered to the PCB during assembly, often as a secondary soldering process.

This can mean that any rework is an expensive and time-consuming process," explains David Schedin, AVX product manager. "The Series 8069 connector is an SMT shield clip that will lock the can in place, which avoids the secondary soldering process and allows the can to be removed and refitted without damage to the PCB," he continues.

According to Mr. Schedin, the shield lock clips utilize spring contact technology to mechanically and electrically connect the RF shield to the PCB. "Certainly the automation and control associated with modern pick and place/reflow processing has proven to outperform competing manual methods," he says. "This advantage manifests itself in lower manufacturing costs and improved reliability."

The SMT shield clips are stamped and formed from a Phosphor Bronze material to provide electrical conductivity and spring-like properties. The components are also plated with tin. "This is done to make the contact compatible with pick-and-place reflow solder manufacturing processes," Mr. Schedin explains.

The connectors come in standard heights of 1.80 mm and 3.00 mm and are available in tape-and-reel packaging of 3,000 pieces per reel. In addition, they have a current rating of 0.5 A, a voltage rating of 5.0 V, and will accept 0.20-mm thick metal cans.

This information is provided by AVX Corporation, Myrtle Beach, SC, U.S.

 

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