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 oscillators 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. 813-6236
Mfr. Part No.QX733A50.00000B15R
BrandQANTEK
PHP115.29
Each
units
Clock 50 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.4mm +85 °C
RS Stock No. 671-9839
Mfr. Part No.S75005-20.000-X-15
BrandAKER
PHP128.36
Each
units
Clock 20 MHz HCMOS ±50ppm Surface Mount SMD 4.5 V 5.5 V - - -40 °C - 1.3mm +85 °C
RS Stock No. 173-2428
Mfr. Part No.Q33310F70015611
BrandEpson
PHP76.088
Each (On a Reel of 250)
units
XO 8 MHz CMOS ±100ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 1.05mm +85 °C
RS Stock No. 111-0686
Mfr. Part No.KC7050A18.4320C30E00
BrandKYOCERA
PHP138.70
Each
units
Clock 18.432 MHz CMOS ±50ppm Surface Mount CSMD 2.97 V 3.63 V - - -10 °C - 1.6mm +70 °C
RS Stock No. 173-2522
Mfr. Part No.Q3306JA41025401
BrandEpson
PHP161.156
Each (On a Reel of 250)
units
XO 1 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 4.45mm +85 °C
RS Stock No. 173-2553
Mfr. Part No.Q3204DC21000300
BrandEpson
PHP181.314
Each (In a Tube of 35)
units
XO 16 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-5137
Mfr. Part No.Q3309CA40006201
BrandEpson
PHP251.35
Each
units
XO 125 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 146-9538
Mfr. Part No.LFSPXO018037 831018037
BrandIQD
PHP134.60
Each (In a Pack of 10)
units
Clock 12 MHz HCMOS ±50ppm Surface Mount SMD - 3.3 V - - 0 °C - 1.4mm +70 °C
RS Stock No. 796-0520
Mfr. Part No.QX14T50B20.00000B50TT
BrandQANTEK
PHP144.74
Each
units
XO 20 MHz HCMOS ±50ppm Through Hole DIP14 4.5 V 5.5 V - - -40 °C - 5.08mm +85 °C
RS Stock No. 173-2549
Mfr. Part No.Q3306JA21035101
BrandEpson
PHP161.156
Each (On a Reel of 250)
units
XO 64 MHz CMOS ±50ppm Surface Mount SMD 4.5 V 5.5 V - - -20 °C - 4.45mm +70 °C
RS Stock No. 173-2406
Mfr. Part No.X1G004451000512
BrandEPSON
PHP62.16
Each (On a Reel of 250)
units
XO 27 MHz CMOS - Surface Mount - 1.6 V 3.6 V - - - - 1.1mm -
RS Stock No. 672-0621
Mfr. Part No.3H53ET-24.000
BrandMERCURY
PHP123.45
Each
units
Clock 24 MHz HCMOS ±50ppm Surface Mount SMD 3.135 V 3.465 V - - -40 °C - 1.2mm +85 °C
RS Stock No. 111-0739
Mfr. Part No.KC5032A10.0000CM0E00
BrandKYOCERA
PHP206.22
Each
units
Clock 10 MHz CMOS ±50ppm Surface Mount CSMD 1.6 V 5.5 V - - -10 °C - 1mm +70 °C
RS Stock No. 813-6387
Mfr. Part No.QX133A32.00000B15R
BrandQANTEK
PHP171.98
Each
units
Clock 32 MHz HCMOS ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 0.6mm +85 °C
RS Stock No. 478-5727
Mfr. Part No.Q3204DC21000300
BrandEpson
PHP214.00
Each
units
XO 16 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-5200
Mfr. Part No.Q3309CA40000401
BrandEpson
PHP251.35
Each
units
XO 20 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -20 °C - 1.4mm +70 °C
RS Stock No. 478-6023
Mfr. Part No.Q3306JA41025401
BrandEpson
PHP168.09
Each
units
XO 1 MHz CMOS ±50ppm Surface Mount SMD 2.7 V 3.6 V - - -40 °C - 4.45mm +85 °C
RS Stock No. 815-0522
Mfr. Part No.QTX533A30.0000B15R
PHP138.74
Each
units
Clock 30 MHz HCMOS, TTL ±25ppm Surface Mount SMD - 3.3 V - - -40 °C - 1.3mm +85 °C
RS Stock No. 173-2576
Mfr. Part No.Q3204DC21015900
BrandEpson
PHP181.314
Each (In a Tube of 35)
units
XO 18.432 MHz CMOS ±50ppm Through Hole PDIP 4.5 V 5.5 V - - -20 °C - 5.3mm +70 °C
RS Stock No. 478-8827
Mfr. Part No.LFSPXO019080
BrandIQD
PHP125.30
Each
units
XO 12 MHz HCMOS, TTL ±50ppm Surface Mount SMD 4.5 V 5.5 V - - 0 °C - 1.5mm +70 °C
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