Crystal Oscillators

A crystal oscillator is a electromechanical device, it's also an electronic oscillator circuit. The main purpose of an oscillator is to make use of a quartz crystal as a frequency. Crystal oscillator’s use the mechanical resonance of a vibrating crystal, of which is made up from a piezoelectric material. This process allows the oscillator to create and obtain an electric signal with a high precision frequency.


Where Crystal Oscillators are used


This type of frequency is mostly used to keep track of time within a wrist watch or a digital integrated circuit, to provide a stable clock signal. This is where this signal gained it's commonly referred to name "clock signal". This clock signal is used to synchronise the operation of the other electronic devices that make up the system the oscillator is housed in. An oscillator is also used to help stabilise frequencies for radio transmitters and receivers, used in clocks (clock oscillator), computers and cell phones. Quartz crystal can also be found inside test and measurement equipment such as counters, signal generators and oscilloscopes.


A little more information on Crystal Oscillators


  • Crystal oscillators are known to be superior to ceramic resonators, this is for a multitude of reasons. They offer higher stability, they're higher quality and are considerably lower in cost and more compact in size.

  • Quartz crystals are manufactured for frequencies that range from a few tens of kilohertz all the way up to hundreds of megahertz.

Types of Crystal Oscillators


  • TCXO - These are used when a temperature stability is needed and can't be attained through a standard crystal oscillator (XO) or a voltage controlled crystal oscillator (VCXO).

  • OCXO - This is an oven controlled crystal oscillator, a type of oscillator that achieves the highest frequency stability that a quartz crystal can. They are designed to operate inside a temperature controlled oven, they are physically larger and require more power to run.

  • VCXO - This is a voltage controlled crystal oscillator, it controls the change in crystal output by using a DC (direct current) voltage.

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Description Price Oscillator Type Output Frequency Output Level Frequency Stability Mounting Type Package Type Minimum Operating Supply Voltage Maximum Operating Supply Voltage Pin Count Length Minimum Operating Temperature Width Height Maximum Operating Temperature
RS Stock No. 703-7144
Mfr. Part No.AS-24.000-18-SMD
BrandRALTRON
TWD14.30
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20°C - 4.6mm 70°C
RS Stock No. 813-6318
Mfr. Part No.QX233A8.000000B15R
BrandQANTEK
TWD80.00
Each
units
Clock 8MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 173-5897
Mfr. Part No.QX233A8.000000B15R
BrandQANTEK
TWD64.20
Each (On a Reel of 1000)
units
Clock 8MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 703-2414
Mfr. Part No.ASE3-25.000MHz-K
BrandAbracon
TWD59.00
Each
units
Clock 25MHz CMOS ±30ppm Surface Mount SMD - - - - -10°C - 1.2mm 70°C
RS Stock No. 693-9241
Mfr. Part No.XO53050UITA-50.000
BrandEuroquartz
TWD116.00
Each
units
XO 50MHz HCMOS, LSTTL ±50ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 173-5857
Mfr. Part No.S53305-24.000-X
BrandAKER
TWD99.30
Each (On a Reel of 250)
units
Clock 24MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 813-6208
Mfr. Part No.QX733A12.00000B15R
BrandQANTEK
TWD66.00
Each
units
Clock 12MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 173-4622
Mfr. Part No.XO53050UITA-50.000
BrandEuroquartz
TWD48.20
Each (On a Reel of 1000)
units
XO 50MHz HCMOS, LSTTL ±50ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 173-4578
Mfr. Part No.QX733A12.00000B15R
BrandQANTEK
TWD53.50
Each (On a Reel of 1000)
units
Clock 12MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 671-9696
Mfr. Part No.S53305-24.000-X
BrandAKER
TWD78.00
Each
units
Clock 24MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 478-5171
Mfr. Part No.Q3309CA40006601
BrandEpson
TWD105.00
Each
units
XO 16MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 667-6335
Mfr. Part No.Q33310F70018711
BrandEpson
TWD120.00
Each
units
XO 26MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 796-0574
Mfr. Part No.QX8T50B7.372800B50TT
BrandQANTEK
TWD84.00
Each
units
XO 7.3728MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 703-7113
Mfr. Part No.AS-12.000-18-SMD
BrandRALTRON
TWD14.30
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - - - -20°C - 4.6mm 70°C
RS Stock No. 667-6549
Mfr. Part No.Q33519E40004512
BrandEpson
TWD54.00
Each
units
XO 66MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.05mm 70°C
RS Stock No. 173-2423
Mfr. Part No.Q33310F70018711
BrandEpson
TWD112.50
Each (On a Reel of 250)
units
XO 26MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 672-0621
Mfr. Part No.3H53ET-24.000
BrandMERCURY
TWD73.00
Each
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 146-3997
Mfr. Part No.LFSPXO018035 831018035
BrandIQD
TWD34.50
Each (In a Bag of 100)
units
Clock 50MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 703-7103
Mfr. Part No.AS-8.000-18-SMD
BrandRALTRON
TWD14.30
Each (In a Bag of 10)
units
- - - ±50ppm Surface Mount HC-49-US SMD - - 2 12mm -20°C 4.8mm 4.6mm 70°C
RS Stock No. 796-0555
Mfr. Part No.QX14T50B50.00000B50TT
BrandQANTEK
TWD84.00
Each
units
XO 50MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C