Crystal Oscillators

What are they ?
Crystal oscillators are used in many types of electrical equipment, it is an electronic oscillator circuit that uses a mechanical resonance of a vibrating crystal piezoelectric material to create an electrical signal with a precise frequency. Most are used for consumer devices such as wristwatches, clocks, radios, computers, and cellphones. Quartz crystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes. Quartz crystals are manufactured for frequencies from a few tens of kilohertz to hundreds of megahertz.
Types of Oscillators
OXCO - Oven Controlled Crystal Oscillator
Designed to be able to operate inside a temperature controlled oven, it is the most stable crystal oscillator and used in satellites, telecom and devices that require a high stable frequency. OCXOs are physically larger and require more power to run at ambient temperatures.
VCXO - Voltage Controlled Crystal Oscillator
Controls the change in crystal output by using DC voltage. The VCXO is usually used to make fine adjustments to the operating frequency. This is because the voltage of a VCXO can vary to a few tens of parts per million. The VCXO is mainly used to adjust the output frequency to match an accurate external reference.
TCXO Temperature Controlled Crystal Oscillator
Designed to be able to handle large variations in ambient temperature. The crystal oscillator is housed with a thermistor which is responsible for handling the continuous change in surrounding temperature and control the crystal oscillator.

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Description Price Oscillator Type Output Frequency Output Level Mounting Type Frequency Stability Package Type Minimum Operating Supply Voltage Maximum Operating Supply Voltage Pin Count Length Width Height Dimensions Minimum Operating Temperature
RS Stock No. 703-7144
Mfr. Part No.AS-24.000-18-SMD
BrandRALTRON
TWD16
Each (In a Bag of 10)
units
- - - Surface Mount ±50ppm HC-49-US SMD - - 2 12mm 4.8mm 4.6mm 12 x 4.8 x 4.6mm -20 °C
RS Stock No. 813-6318
Mfr. Part No.QX233A8.000000B15R
BrandQANTEK
TWD65
Each
units
- 8 MHz HCMOS Surface Mount ±25ppm SMD - 3.3 V 4 2.5mm 2mm 0.95mm 2.5 x 2 x 0.95mm -40 °C
RS Stock No. 173-5897
Mfr. Part No.QX233A8.000000B15R
BrandQANTEK
TWD86
Each (On a Reel of 1000)
units
- 8 MHz HCMOS Surface Mount ±25ppm SMD - 3.3 V 4 2.5mm 2mm 0.95mm 2.5 x 2 x 0.95mm -40 °C
RS Stock No. 703-2414
Mfr. Part No.ASE3-25.000MHz-K
BrandAbracon
TWD78
Each
units
- 25 MHz CMOS Surface Mount ±30ppm SMD 1.71 V 1.89 V 4 3.2mm 2.5mm 1.2mm 3.2 x 2.5 x 1.2mm -10 °C
RS Stock No. 173-4578
Mfr. Part No.QX733A12.00000B15R
BrandQANTEK
TWD72
Each (On a Reel of 1000)
units
- 12 MHz HCMOS Surface Mount ±25ppm SMD - 3.3 V 4 7mm 5mm 1.4mm 7 x 5 x 1.4mm -40 °C
RS Stock No. 173-5857
Mfr. Part No.S53305-24.000-X
BrandAKER
TWD81
Each (On a Reel of 250)
units
- 24 MHz CMOS Surface Mount ±50ppm SMD 3.14 V 3.46 V 4 5mm 3.2mm 0.95mm 5 x 3.2 x 0.95mm -40 °C
RS Stock No. 671-9696
Mfr. Part No.S53305-24.000-X
BrandAKER
TWD68
Each
units
- 24 MHz CMOS Surface Mount ±50ppm SMD 3.14 V 3.46 V 4 5mm 3.2mm 0.95mm 5 x 3.2 x 0.95mm -40 °C
RS Stock No. 173-4622
Mfr. Part No.XO53050UITA-50.000
BrandEuroquartz
TWD78
Each (On a Reel of 1000)
units
- 50 MHz HCMOS, LSTTL Surface Mount ±50ppm SMD - - 4 5mm 3.2mm 1mm 5 x 3.2 x 1mm -40 °C
RS Stock No. 813-6208
Mfr. Part No.QX733A12.00000B15R
BrandQANTEK
TWD48
Each
units
- 12 MHz HCMOS Surface Mount ±25ppm SMD - 3.3 V 4 7mm 5mm 1.4mm 7 x 5 x 1.4mm -40 °C
RS Stock No. 729-3329
Mfr. Part No.OCXOV-AV5-10.000
TWD7,230
Each
units
- 10 MHz HCMOS Through Hole ±0.2ppm PDIP 4.8 V 5.2 V 14 20.14mm 12.52mm 7.8mm 20.14 x 12.52 x 7.8mm 0 °C
RS Stock No. 471-9124
Mfr. Part No.F3345-160
TWD198
Each
units
- 16 MHz HCMOS, TTL Surface Mount ±100ppm SMD 4.5 V 5.5 V 4 7.5mm 5.2mm 1.5mm 7.5 x 5.2 x 1.5mm -10 °C
RS Stock No. 173-4683
Mfr. Part No.F3345-160
TWD108
Each (On a Reel of 1000)
units
- 16 MHz HCMOS, TTL Surface Mount ±100ppm SMD 4.5 V 5.5 V 4 7.5mm 5.2mm 1.5mm 7.5 x 5.2 x 1.5mm -10 °C
RS Stock No. 693-9241
Mfr. Part No.XO53050UITA-50.000
BrandEuroquartz
TWD136
Each
units
- 50 MHz HCMOS, LSTTL Surface Mount ±50ppm SMD - - 4 5mm 3.2mm 1mm 5 x 3.2 x 1mm -40 °C
RS Stock No. 667-6549
Mfr. Part No.Q33519E40004512
BrandEpson
TWD114
Each
units
- 66 MHz CMOS Surface Mount ±50ppm SMD 2.7 V 3.6 V 4 3.2mm 2.5mm 1.05mm 3.2 x 2.5 x 1.05mm -20 °C
RS Stock No. 672-0621
Mfr. Part No.3H53ET-24.000
BrandMERCURY
TWD71
Each
units
- 24 MHz HCMOS Surface Mount ±50ppm SMD 3.135 V 3.465 V 4 5mm 3.2mm 1.2mm 5 x 3.2 x 1.2mm -40 °C
RS Stock No. 173-2590
Mfr. Part No.Q3309CA40006601
BrandEpson
TWD133
Each (On a Reel of 250)
units
- 16 MHz CMOS Surface Mount ±50ppm SMD 2.7 V 3.6 V 4 7mm 5mm 1.4mm 7 x 5 x 1.4mm -20 °C
RS Stock No. 173-2423
Mfr. Part No.Q33310F70018711
BrandEpson
TWD52
Each (On a Reel of 250)
units
- 26 MHz CMOS Surface Mount ±50ppm SMD 2.7 V 3.6 V 4 3.2mm 2.5mm 1.05mm 3.2 x 2.5 x 1.05mm -40 °C
RS Stock No. 667-6335
Mfr. Part No.Q33310F70018711
BrandEpson
TWD88
Each
units
- 26 MHz CMOS Surface Mount ±50ppm SMD 2.7 V 3.6 V 4 3.2mm 2.5mm 1.05mm 3.2 x 2.5 x 1.05mm -40 °C
RS Stock No. 111-0763
Mfr. Part No.KC5032A50.0000CM0E00
BrandKYOCERA
TWD95
Each
units
- 50 MHz CMOS Surface Mount ±50ppm CSMD 1.6 V 5.5 V 4 5mm 3.2mm 1mm 5 x 3.2 x 1mm -10 °C
RS Stock No. 703-7103
Mfr. Part No.AS-8.000-18-SMD
BrandRALTRON
TWD13
Each (In a Bag of 10)
units
- - - Surface Mount ±50ppm HC-49-US SMD - - 2 12mm 4.8mm 4.6mm 12 x 4.8 x 4.6mm -20 °C