TriQuint Releases GSM and CDMA Handset SAW Filters in small Size

(Product News, 10 Mar 2006)

Semiconductor has introduced a family of GSM and CDMA handset SAW filters in a smaller size: 1.4x1.2x0.5mm3 for next-generation handset designs. The SAWs are said to be 40% smaller than the 2x1.4mm filters manufacturers typically use, allowing phone designers to free-up circuit board space for mobile device features and functionality. The products represent a breakthrough in size reduction while maintaining excellent electrical performance, reliability and cost. TriQuint’s 1.4x1.2mm handset SAW filter family uses the same reliable processes and equipment as first- and second-generation CSP (chip scale package) SAW filters. The company maintains hermeticity in its products. (Hermeticity involves sealing the SAW die inside a ceramic package so that sensitive circuitry is protected from environmental corrosion. Air inside the device is also replaced with inert nitrogen to further ward-off corrosion). Hermeticity is an important for SAW filters because the transducers (tiny sub-components at the heart of device functionality) are made of nanometer-thick metal on the surface of a piezoelectric substrate.

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