32.768kHz smd tuning fork crystals available from Total Frequency Control.

The sub miniaturisation of the ubiquitous 32.768kHz ‘watch crystal’ continues with package sizes now reduced to (2.0 x 1.2) mm and very low profile. Available from TFC, smd tuning fork crystals are a low cost crystal with an ultra-low profile of 0.9mm and two standard packages of (2.0 x 1.2) mm and (4.2 x 1.5) mm. Manufactured within a vacuum sealed ceramic enclosure, the lightweight, miniature, ultra-thin crystals are ideal for basic timing applications and perfectly suited for portable and mobile telecommunication devices. Available from stock and supplied on tape and reel with 3000 pieces per reel, excellent tolerance and extended temperature range for industrial and military applications.

Standard spec includes:
Environment: ceramic package high vacuum
Quartz orientation: flexure mode
Frequency: 32.768 kHz
Adjustment tolerance:  ±20ppm at +25 Deg C as standard
Temperature coefficient: -0.04ppm/Deg C
Load: 12.5pF as standard
Operating temperature: (-40 ~ +85) Deg C
Ageing: ±3ppm typical per year
Q factor: 30,000 typical
Insulation resistance:  500Meg Ω min. at 100Vd.c.

About Total Frequency Control Ltd.

TFC provides European distribution and a Head Office for group manufacturing facilities supporting and managing the resources of three companies.
Manufacturing includes High Precision Quartz products for resonators, QCM, Material Lapping and Polishing, Precision OCXO , TCXO and VCXO oscillators and Frequency Standards. Distribution provides an extensive range of Inductive Components with Air Wound Coils, Moulded Coils, Chip Inductors, Screened and Moulded r.f. Coils, smd Power Inductors, Toroid Coils, Noise Suppression Modules and Ferrite beads. A select range of Miniature smd Clock Oscillators, TCXO and VCXO are also provided to complement the manufactured range.
The companies have Integrated Management Systems and hold registrations to ISO9001: 2008, ISO14001: 2004, IPC J-STD-001, Investor in People and are RoHS compliant. In house shock and vibration test systems provide certification and conformance to environmental standards and specific customer requirements.

Contact:Tsao.Mills@tfc.co.uk