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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


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

Frequency solutions for harsh environments

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

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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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