Inverted Mesa crystal blanks start from swept, pure Z growth quartz polished wafers using XECO's proprietary processes which produce highly consistent blanks, with tightly controlled frequency and flatness. Mesa surface finishes are fully polished by a chemical milling process which result in a clean transition edge and smooth mesa area for low defect, high performance crystal operation.  This finish is needed for high quality filter manufacturing and is ideal for oscillators

XECO Plated blanks offer unique processing advantages to achieve uniform metal thickness and exceptional electrode alignment, yielding excellent uniformity of crystal motional parameters.   Metal options include

• Chrome-gold electrodes and flags (contacts),  

• 100% Aluminum

• 100% Aluminum electrodes with Chrome-gold flags (contacts). 

Standard electrodes are round or elliptical in shape and vary in size from 2 mils to 80 mils (0.05 to 2.03mm). Some sizes for specific styles may have special order conditions.

Electrode placement within 0.025mm is standard; however, this can be specified to 0.01mm for demanding requirements.

XECO also supplies to many custom requirements, whether special electrode shapes to maximize best ESR , best in spur performance for filters, MCF, or other needs for filter and sensor applications.  Unique patterns with various elements formed are possible.

New advances in manufacturing and test allow us to  supply higher frequency products with excellent characteristics and tolerances, improved overall quality of mainstream products, and to meet new and emerging requirements for precision or high accuracy oscillator, filter, and sensor applications.

XECO automation assures consistent products at favorable yields and costs.  Despite first-order conventional thinking to the contrary,  smaller blanks may offer higher circuit performance through reduction of parasitic components, and therefore should be considered first for your applications.