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. 172-2044
Mfr. Part No.KC7050K40.0000C1GE00
BrandKYOCERA
MYR20.94
Each
units
Clock 40MHz CMOS - Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 904-7749
Mfr. Part No.X1G004451000912
BrandEPSON
MYR13.14
Each
units
XO 54MHz CMOS - Surface Mount - - - - - - - 1.1mm -
RS Stock No. 173-2352
Mfr. Part No.X1G004171001012
BrandEPSON
MYR4.657
Each (On a Reel of 250)
units
XO 4.096MHz CMOS - Surface Mount - - - - - -40°C - 0.8mm +85°C, +105°C
RS Stock No. 171-0165
Mfr. Part No.AX7DBF1-150.0000C
BrandAbracon
MYR25.978
Each (On a Tape of 50)
units
XO - - - - - - - - - - - - -
RS Stock No. 173-2412
Mfr. Part No.Q33310F70002511
BrandEpson
MYR6.026
Each (On a Reel of 250)
units
XO 48MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°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
RS Stock No. 144-5017
BrandRS PRO
MYR11.834
Each (In a Pack of 5)
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - 1.8 → 3.3V dc - - -40°C - 1mm 85°C
RS Stock No. 146-3957
Mfr. Part No.LFSPXO018039 831018039
BrandIQD
MYR4.93
Each (On a Reel of 1000)
units
Clock 20MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 667-6338
Mfr. Part No.Q33310F70003311
BrandEpson
MYR17.88
Each
units
XO 24MHz CMOS ±100ppm Surface Mount SMD - - - - -40°C - 1.05mm 85°C
RS Stock No. 171-0298
Mfr. Part No.AX7MCF3-156.2500C
BrandAbracon
MYR28.51
Each
units
XO 156.25MHz LVDS ±25ppm Surface Mount 6-SMD Compatible - - - - -40°C - 1.9mm 85°C
RS Stock No. 671-9741
Mfr. Part No.S33305-25.000-X
BrandAKER
MYR8.34
Each
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.1mm 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. 146-3967
Mfr. Part No.LFSPXO025494 831025494
BrandIQD
MYR4.893
Each (On a Reel of 1000)
units
Clock 16MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 672-0022
Mfr. Part No.S21805-25.000-X
BrandAKER
MYR21.74
Each
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 0.95mm 85°C
RS Stock No. 148-5671
Mfr. Part No.LFSPXO018035 831018035
BrandIQD
MYR7.224
Each (In a Pack of 10)
units
Clock 50MHz HCMOS, TTL ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 111-0730
Mfr. Part No.KC7050A100.000C30E00
BrandKYOCERA
MYR10.41
Each
units
Clock 100MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 173-2552
Mfr. Part No.Q3204DC21028100
BrandEpson
MYR10.074
Each (In a Tube of 35)
units
XO 16.384MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C
RS Stock No. 146-3920
Mfr. Part No.LFSPXO025165 831025165
BrandIQD
MYR4.53
Each (On a Reel of 1000)
units
Clock 25MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 171-2336
Mfr. Part No.ASE-25.000MHZ-LR-T
BrandAbracon
MYR5.188
Each (On a Reel of 1000)
units
XO 25MHz CMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.2mm 85°C
RS Stock No. 478-5878
Mfr. Part No.Q3204DC21000100
BrandEpson
MYR14.41
Each
units
XO 4.9152MHz CMOS ±50ppm Through Hole PDIP - - - - -20°C - 5.3mm 70°C