Product listngs for inverted mesa crystal blanks for crystal oscillators or crystal resonators, and quartz sensor products series:RM126 RZ126 RM138 SM141 SM156 Round crystals CM200 CM240 RM196 RM196X RZ196 RZ150 RM150 RM150X

Inverted Mesa and High
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Crystals for Oscillators and Filters

XECO smaller crystals often exceed performance of their larger counterparts due to lower parasitics. See RM098

This table includes actively promoted crystals. XECO supplies other types; see alphanumeric table to look up another type

Mesa Series	Style	Inverted mesa crystal blanks dimensions	Application; common packages or mount	Frequency Range
RM098		2.49 x 1.83mm	5x7mm, UM-1 HC-45 and smaller mounts** Oscillators, filters, sensors Recommended for new designs	50-1300MHz
RM126		3.2 mm x 1.83 mm	3.2 x 5.0 mm SMD (Standard) Oscillators, filters, sensors Recommended for new designs	70-700MHz
RM196		4.98mm x 2.39 mm	Industry standard 5 x7 mm SMD Recommended but we think RM098 is better choice	30-550MHz
RR196		4.98mm x 2.39 mm	Perfect for UM-1 HC-45* Oscillators, filters, sensors Preferred part where legacy clips must be used	30-550MHz
SM141		3.58mm x 3.58mm (5.08 across diagonal)	0.200" or 5.08mm 2-point or 4-point clip mounts. UM-1, HC_45 or larger packages* Second choice over RR196 where legacy clips must be used	30 -350MHz
CM200		5.08 mm round	0.200" or 5.08mm 2-point, 3-point, or 4-point clip mounts UM-1, HC_45, Large SMD or larger packages	30-200 MHz
CM220		5.58 mm round	0.220" or 5.58mm 2-point, 3-point, or 4-point clip mounts UM-1, HC_45, Large SMD or larger packages	30-200MHz

** Contact Xeco for information on UM-1 or HC-45 packages with modifed clips to hold these parts

* These use standard 0.200" or 5.08mm spacing clips or mounts

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Copyright 2004-2008 XECO Inc. XECO independent manufacturer of inverted mesa crystal blanks and high frequency blanks for oscillator, filter, and sensor applications. High frequency blanks and high frequency plated crystal blanks supplier. XECO inverted mesa crystal blanks and high frequency blanks are supplied as plated blanks as well.