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A global supplier of innovative frequency control solutions

Our comprehensive portfolio includes quartz crystals, clock oscillators, TCXOs, VCXOs, filters, OCXOs and custom frequency solutions

Frequency solutions for harsh environments

Offering a range of crystals and oscillators suitable for high temperature, high shock and vibration environments


Optimum performance, low power Circulators and Isolators from 5 x 5 mm SMT package, up to 6GHz frequency. Custom solutions available.

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Low-power, ultra-stable TCXO and OCXO solutions

Our design partner, Esterline’s propriety software compensation (M-SAC) techniques enable revolutionary stability performance down to +/-0.2ppb

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More than just frequency control

Use our expertise to solve your design challenges.
Our engineering team can provide technical support,
in-house testing facilities and sample prototyping


Quartz crystals, Clock oscillators, TCXOs, VCXOs, OCXOs, M-SAC oscillators and Filters

More than just frequency control

Since 1986 ACT – formerly Advanced Crystal Technology – have evolved into a leading design partner for high-performance frequency control products. Contact us today and take advantage of over 30 years of frequency control design, manufacture and distribution

  • Engineering-led technical support
  • Custom designs / non-standard performance
  • Flexibility – quick turn, low MOQs
  • Sample stock of standard frequencies

  • Inventory management
  • ISO9001 and TS16949 approvals
  • UK in-house technical laboratory
  • Crystal and micro-controller matching service


Global distribution partners

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