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. 707-9662
Mfr. Part No.CO4305-24.000-EXT
BrandRALTRON
MYR11.38
Each
units
Clock 24MHz CMOS, TTL ±50ppm Surface Mount SMD - - - - -40°C - 1.8mm 85°C
RS Stock No. 478-8760
Mfr. Part No.LFSPXO018541 831018541
BrandIQD
MYR10.15
Each
units
XO 24MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.5mm 70°C
RS Stock No. 173-2522
Mfr. Part No.Q3306JA41025401
BrandEpson
MYR14.913
Each (On a Reel of 250)
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 4.45mm 85°C
RS Stock No. 173-5852
Mfr. Part No.S75005-10.000-X-15
BrandAKER
MYR9.98
Each (On a Reel of 250)
units
Clock 10MHz HCMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 796-0536
Mfr. Part No.QX14T50B25.00000B50TT
BrandQANTEK
MYR11.14
Each
units
XO 25MHz HCMOS ±50ppm Through Hole DIP14 - - - - -40°C - 5.08mm 85°C
RS Stock No. 171-0376
Mfr. Part No.AX7PBF1-156.2500C
BrandAbracon
MYR28.51
Each
units
XO 156.25MHz LVPECL ±25ppm Surface Mount 6-SMD Compatible - - - - -40°C - 1.9mm 85°C
RS Stock No. 173-2504
Mfr. Part No.X1G004481001612
BrandEPSON
MYR9.283
Each (On a Reel of 250)
units
XO 24.576MHz CMOS - Surface Mount - - - - - - - 1.3mm -
RS Stock No. 172-1908
Mfr. Part No.KC5032K9.83040C1GE00
BrandKYOCERA
MYR20.94
Each
units
Clock 9.83MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 173-2413
Mfr. Part No.Q33310F70017011
BrandEpson
MYR6.026
Each (On a Reel of 250)
units
XO 40MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 703-2161
Mfr. Part No.ASFL1-3.6864MHz-EK
BrandAbracon
MYR10.07
Each
units
Clock 3.6864MHz HCMOS, TTL ±30ppm Surface Mount SMD - - - - -20°C - 1.3mm 70°C
RS Stock No. 815-0617
Mfr. Part No.QTX333A50.0000B15TR
MYR12.14
Each
units
Clock 50MHz HCMOS, TTL ±25ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 796-0552
Mfr. Part No.QX8T50B2.457600B50TT
BrandQANTEK
MYR12.41
Each
units
XO 2.4576MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 671-9684
Mfr. Part No.S53305-16.000-X
BrandAKER
MYR12.61
Each
units
Clock 16MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 178-2674
Mfr. Part No.638P15623I3T
BrandCTS
MYR28.98
Each (In a Pack of 2)
units
Clock 156.25MHz LVPECL ±50ppm Surface Mount SMD 3.13V dc 3.46V dc - - -40°C - 2mm 85°C
RS Stock No. 180-7706
Mfr. Part No.ASAKMPD5-32.768KHZ-T3
BrandAbracon
MYR10.802
Each (On a Reel of 3000)
units
XO 32.76kHz CMOS ±15ppm Surface Mount SMD - - - - -40°C - 0.6mm 85°C
RS Stock No. 173-5857
Mfr. Part No.S53305-24.000-X
BrandAKER
MYR10.523
Each (On a Reel of 250)
units
Clock 24MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 178-2561
Mfr. Part No.CB3-3I-16M0000
BrandCTS
MYR7.578
Each (In a Pack of 5)
units
Clock 16MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5V dc 5.5V dc - - -40°C - 1.8mm 85°C
RS Stock No. 667-6350
Mfr. Part No.Q33310F70003711
BrandEpson
MYR15.48
Each
units
XO 4MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 667-6385
Mfr. Part No.Q3806CA10003901
BrandEpson
MYR61.63
Each
units
XO 125MHz LVDS ±100ppm Surface Mount SMD - - - - 0°C - 1.2mm 70°C
RS Stock No. 111-0720
Mfr. Part No.KC7050A8.00000C50D00
BrandKYOCERA
MYR14.12
Each
units
Clock 8MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C