Home » Quartz Crystals, Clock Oscillators, Fast Make Oscillators, TCXOs, TCVCXOs, VCXOs, OCXOs, GPS Disciplined OCXO, Rubidium Oscillators, Automotive Crystals and Real Time Clocks

Quartz Crystals

Quartz crystals are used in a wide range of electronic applications. The High Q factor of the quartz means that tight stabilities can be achieved; this is key to ensuring microprocessor timing circuits work correctly within customer’s designs...

Clock Oscillators

Crystal Clock Oscillators are a “plug and play” quartz crystal and are used in many telecom, military, industrial and consumer applications. IQD’s comprehensive range of Crystal Clock Oscillators are available in a range of voltages down to 1.8V and in a variety of sizes...


Voltage Controlled Crystal Oscillators (VCXOs) are used mainly in the telecom, test and broadcast industry. They enable customers to adjust the frequency by as much as ±150ppm while the circuit is active and so match an incoming signal.


Temperature Compensated Crystal Oscillators (TCXOs) and Temperature Compensated Voltage Controlled Crystal Oscillators (TCVCXOs) offer stabilities as tight as parts per billion (ppb). They are used where the stability of a standard Crystal Clock Oscillator is insufficient...


Oven Controlled Crystal Oscillators offer frequency stabilities even tighter than those offered by a TCXO. The frequency drift of the quartz crystal due to temperature shift is reduced by heating the crystal in an oven and so holding the temperature of the quartz at a fixed point.

Advanced Modules

Frequency control products incorporating more than just an oscillator. IQD can develop sophisticated modules to incorporate the horizontal integration of the functions required by our frequency control product users.

Rubidium Oscillators

The Sub Miniature Atomic Clock (SMAC) is housed in a 5 pin 51mm square package making it compatible with many existing OCXO footprints whilst offering considerable improved performance.

Real Time Clocks

A Real Time Clock (RTC) is an integrated circuit which keeps very accurate track of time and is used in a wide range of electronic equipment where time, day, month, year and an alarm function is required. IQDs range of RTC includes a 32.768kHz crystal and a digital compensated TCXO.

Tight Stability Real Time Clock (RTC)

Real time clock

  • IQRC-100
  • Tight stability ±3.4ppm
  • 32.768kHz
  • Supply voltage 1.8 to 5.5V
  • Typical applications: blood pressure monitors, data loggers, industrial control and POS systems.


Analogue compensated TCXO

  • IQXT-200IQXT-200
  • Frequency stability down to ±0.28ppm
  • 7 x 5mm
  • 10 to 50MHz
  • -40 to 85°C
  • Typical applications: RF Modules, Micro base stations, rescue beacons and test & measurement


Statek LogoIQD is an official distributor for Statek worldwide. Statek's unique range of crystals & clock oscillators with high shock & vibration and very wide operating temperature, up to -55 to 200°C, is ideal for military, medical, avionics and down hole applications.

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IQD Blog

New UK Distributor

New UK Distributor

IQD Frequency are pleased to welcome Sematron as a new distributor in the UK. “Sematron’s experience in the Telecoms, Defence…

New Rep Signed for the Dixie States

New Rep Signed for the Dixie States

IQD Frequency Products Inc are pleased to announce that BattleShip Technologies have signed a Rep agreement for the States of North &…

Ultra-miniature SMD TCXO


  • IQXT-170 series
  • 2.0 x 1.6 x 0.8mm
  • Clipped sinewave
  • ±1ppm frequency stability
  • -30 to +85°C
  • 2.8 & 3V
  • Typical applications:  W-CDMA, GPRS, GSM, Wi-Fi, WiMAX

‘Circuit Characterisation’ Service

Circuit CharacterisationThis service ensures that the correct crystal specification and associated oscillator circuit is used to enable the chipset to work correctly within the application. By doing so it eliminates issues that can occur which include start-up problems with the quartz crystal.

Please contact us on info@iqdfrequencyproducts.com


IQD’s comprehensive range of Automotive Crystals are qualified to AEC-Q200 standard and can be released to TS16949 where required. Full PPAP documentation (levels 1 to 5) is also available upon request.

Latest Press Release

IQD’s new specialist high shock oscillator also delivers high temperature performance

IQD’s new specialist high shock oscillator also delivers high temperature performance

The new SQXO-2ATHG range of very high shock survivability oscillators launched by IQD are housed in a TO-39 package and can withstand shock levels of up to 8,000g for 0.5ms, ½ sine. They are designed primarily for applications such as underground boring tools, down hole instrumentation…

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