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. 173-2608
Mfr. Part No.Q3851CA00003812
BrandEpson
MYR16.024
Each (On a Reel of 250)
units
XO 75MHz CMOS ±50ppm Surface Mount SMD - - - - -10°C - 1.2mm 70°C
RS Stock No. 813-6191
Mfr. Part No.QX733A7.372800B15R
BrandQANTEK
MYR9.88
Each
units
Clock 7.3728MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 111-0789
Mfr. Part No.KC2520B25.0000C10E00
BrandKYOCERA
MYR17.68
Each
units
Clock 25MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 0.7mm 70°C
RS Stock No. 111-0702
Mfr. Part No.KC7050A6.14400C30E00
BrandKYOCERA
MYR13.42
Each
units
Clock 6.144MHz CMOS ±50ppm Surface Mount CSMD - - - - -10°C - 1.6mm 70°C
RS Stock No. 478-5187
Mfr. Part No.Q3309CA40041701
BrandEpson
MYR21.55
Each
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°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. 707-9646
Mfr. Part No.CO4305-8.000-EXT
BrandRALTRON
MYR11.38
Each
units
Clock 8MHz CMOS, TTL ±50ppm Surface Mount SMD - - - - -40°C - 1.8mm 85°C
RS Stock No. 148-4384
Mfr. Part No.LFSPXO018041 831018041
BrandIQD
MYR10.15
Each (In a Pack of 10)
units
Clock 4MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 146-3981
Mfr. Part No.LFSPXO018541 831018541
BrandIQD
MYR10.15
Each (On a Reel of 1000)
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 173-2591
Mfr. Part No.Q3309CA40041701
BrandEpson
MYR16.75
Each (On a Reel of 250)
units
XO 1MHz CMOS ±50ppm Surface Mount SMD - - - - -20°C - 1.4mm 70°C
RS Stock No. 703-2357
Mfr. Part No.ASE-14.7456MHz-LC
BrandAbracon
MYR8.74
Each
units
Clock 14.7456MHz CMOS ±50ppm Surface Mount SMD - - - - -40°C - 1mm 85°C
RS Stock No. 146-3990
Mfr. Part No.LFSPXO018041 831018041
BrandIQD
MYR10.15
Each (On a Reel of 1000)
units
Clock 4MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 173-5835
Mfr. Part No.QX733A7.372800B15R
BrandQANTEK
MYR9.262
Each (On a Reel of 1000)
units
Clock 7.3728MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.4mm 85°C
RS Stock No. 813-6242
Mfr. Part No.QX533A12.00000B15R
BrandQANTEK
MYR10.82
Each
units
Clock 12MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
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. 173-5866
Mfr. Part No.QX533A12.00000B15R
BrandQANTEK
MYR10.278
Each (On a Reel of 1000)
units
Clock 12MHz HCMOS ±25ppm Surface Mount SMD - - - - -40°C - 1.3mm 85°C
RS Stock No. 703-7129
Mfr. Part No.AS-16.000-18-SMD
BrandRALTRON
MYR1.72
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. 173-4650
Mfr. Part No.QX8T50B12.00000B50TT
BrandQANTEK
MYR12.343
Each (In a Tube of 40)
units
XO 12MHz HCMOS ±50ppm Through Hole PDIP - - - - -40°C - 5.08mm 85°C
RS Stock No. 148-5356
Mfr. Part No.LFSPXO018541 831018541
BrandIQD
MYR10.15
Each (In a Pack of 10)
units
Clock 24MHz HCMOS ±50ppm Surface Mount SMD - - - - 0°C - 1.4mm 70°C
RS Stock No. 178-2458
Mfr. Part No.CB3-3I-40M0000
BrandCTS
MYR8.004
Each (In a Pack of 5)
units
Clock 40MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5V dc 5.5V dc - - -40°C - 1.8mm 85°C