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Total Frequency Control News ....

World's smallest precision quartz crystal - August 2011

TFC provide the world's smallest precision quartz crystal manufactured by their subsidiary Laptech Precision Inc. in Canada. 

Dave Garvey, Technical Director at Laptech says the LT-4 crystal combines the highest technical abilities of the design engineers and production team at Laptech and the latest use of SC cut quartz blanks in this miniature package is a major step forward. 

The LT-4 represents the pinnacle of design and innovation for a miniature precision quartz crystal. Packaged in a leaded resistance weld enclosure and offering superior specifications to smd units the LT-4 is available from (15 ~ 175)MHz, adjustment tolerance from ±3ppm and temperature tolerance from ±3ppm. The units may be filled with dry nitrogen or vacuum brazed; gold plated electrodes give excellent long term ageing. Lead options include straight leads and pre-formed leads for smd requirements. These units may be manufactured with AT cut, SC cut and IT cut quartz. 

Typical uses are miniature r.f. applications and, with a weight of only 0.17 grams, channel crystals for wildlife tracking were it is already a popular choice for fish tags and avian monitoring transceivers. Manufacturers of precision OCXO now have the further option to incorporate the LT-4 and reduce the size of their units. 

Specific features include: 

  • Package: resistance weld (5.48 x 4.40 x 2.38)mm, high temp vacuum braze 
  • Excellent shock and vibration performance from internal support system 
  • Excellent term ageing and phase noise performance 
  • Extensive stock profile for wildlife channel frequencies 
  • Weight 0.17grams 
  • Lead pitch 3.75mm; equal to UM-1, UM-4, UM-5 and HC-45 
  • Vacuum seal or back filled with dry nitrogen 
Laptech manufacture a complete range of precision quartz crystals and monitor crystals and supply a range of oscillators from 1MHz to 2.4GHz including TCXO, VCXO, PLL and GPS modules. 

Full data sheet at http://www.laptech.com/pdfs/LT-4 generic data sheet.pdf  

About Laptech Precision Inc. 

Founded in 1972, the company, which is located in a 15,000 square foot facility in Ontario Canada, employs highly skilled personnel, its unique blend of products and services include precision quartz resonators supplied to oscillator manufacturers worldwide, quartz and alloy material fabrication to exacting parallel and optical polish standards and high precision OCXO, TCXO and VCXO oscillators manufactured by the parent company. Additionally a range of miniature smd oscillators purchased from qualified sources are provided to augment the group manufactured products. 

The company is ISO9001:2008 and RoHS compliant and follows a programme of environmental management which will be formally recognised to ISO14001 in 2011. 

 Contact: sales@tfc.co.uk 

 August 18th 2011


 

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