Crystal Units

Quartz crystal units are used as resonators in crystal oscillator circuits.
Crystals have highly accurate frequency, tight tolerance and long-term stability. They come in a wide range of frequencies and provide the clock source. Specifications include resonance frequency, resonance mode, load capacitance and series resistance. Mode of oscillation in the resonance frequency operation is specified at the fundamental frequency or the third overtone.

Crystals have two resonance modes, parallel and series. Load capacitance is an important specification when using parallel-resonant oscillation mode. Oscillator circuits can tolerate some degree of series resistance. Metal, ceramic epoxy and plastic package variety for crystals offer excellent environmental and heat resistance. Applications of a crystal are found in mobile phones, clock circuit for microprocessors, GPS clocks, and ISM band radio frequency communications.

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Viewing 1 - 20 of 2820 products
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Description Price Standard Frequency Mounting Type Load Capacitance Package Type Pin Count Length Width Height Dimensions Frequency Tolerance Frequency Stability Series Resistance Frequency Ageing Minimum Operating Temperature
RS Stock No. 693-6970
Mfr. Part No.AS-16.000-18
BrandRALTRON
£0.316
Each (In a Bag of 10)
Units
16MHz Through Hole 18pF HC-49-S 2 11.35mm 5mm 3.5mm 11.35 x 5 x 3.5mm ±50ppm ±100ppm 40Ω ±5 ppm/yr -40 °C
RS Stock No. 547-6985
Mfr. Part No.NC38LF-327
£0.275
Each (In a Pack of 10)
Units
32.768kHz Through Hole 12.5pF Cylindrical 2 3mm 3mm 8.3mm 3 x 3 x 8.3mm ±20ppm - 35kΩ ±3 ppm/yr -20 °C
RS Stock No. 173-4288
Mfr. Part No.NC38LF-327
£0.17
Each (On a Reel of 1000)
Units
32.768kHz Through Hole 12.5pF Cylindrical 2 3mm 3mm 8.3mm 3 x 3 x 8.3mm ±20ppm - 35kΩ ±3 ppm/yr -20 °C
RS Stock No. 729-3252
Mfr. Part No.CM7V-T1A 32.768kHz 7pF +/-10ppm TA QC
£0.826
Each (In a Bag of 5)
Units
32.768kHz Surface Mount 7pF SMD 2 3.2mm 1.5mm 0.65mm 3.2 x 1.5 x 0.65mm ±10ppm - 70kΩ ±3 ppm/yr -40 °C
RS Stock No. 173-5828
Mfr. Part No.CM7V-T1A 32.768KHZ 7PF +/-10PPM TA QC
£0.743
Each (On a Reel of 3000)
Units
32.768kHz Surface Mount 7pF SMD 2 3.2mm 1.5mm 0.65mm 3.2 x 1.5 x 0.65mm ±10ppm - 70kΩ ±3 ppm/yr -40 °C
RS Stock No. 146-3909
Mfr. Part No.LFXTAL003000
BrandIQD
£567.00
1 Reel of 3000
Reel(s)
32.768kHz Surface Mount 12.5pF Cylinder 4 8.7mm 3.7mm 2.5mm 8.7 x 3.7 x 2.5mm ±20ppm - 50kΩ ±5 ppm/yr @ 25 °C -
RS Stock No. 148-4316
Mfr. Part No.LFXTAL003000
BrandIQD
£0.21
Each (In a Pack of 20)
Units
32.768kHz Surface Mount 12.5pF Cylinder 4 8.7mm 3.7mm 2.5mm 8.7 x 3.7 x 2.5mm ±20ppm - 50kΩ ±5 ppm/yr @ 25 °C -
RS Stock No. 478-9274
Mfr. Part No.LFXTAL003000
BrandIQD
£0.615
Each (In a Pack of 10)
Units
32.768kHz Surface Mount 12.5pF 85SMX 4 8.7mm 3.7mm 2.5mm 8.7 x 3.7 x 2.5mm ±20ppm - 55kΩ - -
RS Stock No. 814-9440
Mfr. Part No.QCL16.0000F18B23B
BrandQANTEK
£0.142
Each (In a Bag of 10)
Units
16MHz Through Hole 18pF HC-49/U-S 2 11.05mm 4.65mm 3.5mm 11.05 x 4.65 x 3.5mm ±20ppm ±30ppm 40Ω ±3 ppm/yr -40 °C
RS Stock No. 173-4309
Mfr. Part No.QCL16.0000F18B23B
BrandQANTEK
£0.128
Each (In a Bag of 100)
Units
16MHz Through Hole 18pF HC-49/U-S 2 11.05mm 4.65mm 3.5mm 11.05 x 4.65 x 3.5mm ±20ppm ±30ppm 40Ω ±3 ppm/yr -40 °C
RS Stock No. 478-9505
Mfr. Part No.LFXTAL003237
BrandIQD
£0.425
Each (In a Pack of 10)
Units
16MHz Surface Mount 16pF HC-49-4H-SMX 2 11.05mm 4.7mm 4mm 11.05 x 4.7 x 4mm ±30ppm ±50ppm 50Ω ±3 ppm/yr -10 °C
RS Stock No. 148-5362
Mfr. Part No.LFXTAL003237
BrandIQD
£0.192
Each (In a Pack of 50)
Units
16MHz Surface Mount 16pF SMD 2 11.4mm 4.9mm 4.3mm 11.4 x 4.9 x 4.3mm ±30ppm ±50ppm 40Ω ±5 ppm/yr @ 25 °C -10 °C
RS Stock No. 146-3916
Mfr. Part No.LFXTAL003237
BrandIQD
£169.63
1 Reel of 1000
Reel(s)
16MHz Surface Mount 16pF SMD 2 11.4mm 4.9mm 4.3mm 11.4 x 4.9 x 4.3mm ±30ppm ±50ppm 40Ω ±5 ppm/yr @ 25 °C -10 °C
RS Stock No. 148-4371
Mfr. Part No.LFXTAL002995
BrandIQD
£0.114
Each (In a Pack of 50)
Units
32.768kHz Through Hole 12.5pF Cylinder 2 - - 8.2mm 3 (Dia.) x 8.2mm ±20ppm - 50kΩ ±5 ppm/yr @ 25 °C -40 °C
RS Stock No. 146-3923
Mfr. Part No.LFXTAL002995
BrandIQD
£89.13
1 Bag of 1000
Bag(s)
32.768kHz Through Hole 12.5pF Cylinder 2 - - 8.2mm 3 (Dia.) x 8.2mm ±20ppm - 50kΩ ±5 ppm/yr @ 25 °C -40 °C
RS Stock No. 693-8819
Mfr. Part No.16.000MHz HC49/4H/30/50/-40+85/18pF/ATF
BrandEuroquartz
£1.18
Each
Units
16MHz Through Hole 18pF HC-49-4H 2 10.77mm 4.34mm 3.5mm 10.77 x 4.34 x 3.5mm ±30ppm ±3ppm 40Ω ±3 (First Year); ±1 (After First Year) ppm/yr -40 °C
RS Stock No. 173-4298
Mfr. Part No.FOXSLF/160-20
£0.15
Each (On a Reel of 1000)
Units
16MHz Through Hole 20pF HC-49-SLF 2 11.35mm 4.65mm 3.6mm 11.35 x 4.65 x 3.6mm ±30ppm ±50ppm 40Ω ±5 ppm/yr -20 °C
RS Stock No. 547-6294
Mfr. Part No.FOXSLF/160-20
£0.25
Each (In a Pack of 5)
Units
16MHz Through Hole 20pF HC-49-SLF 2 11.35mm 4.65mm 3.6mm 11.35 x 4.65 x 3.6mm ±30ppm ±50ppm 40Ω ±5 ppm/yr -20 °C
RS Stock No. 146-3915
Mfr. Part No.LFXTAL002997
BrandIQD
£95.07
1 Bag of 1000
Bag(s)
32.768MHz Through Hole 12.5pF Cylinder 2 - - 6.2mm 2 (Dia.) x 6.2mm ±20ppm - 50kΩ ±5 ppm/yr @ 25 °C -40 °C
RS Stock No. 478-9268
Mfr. Part No.LFXTAL002997
BrandIQD
£0.065
Each (In a Pack of 10)
Units
32.768kHz Through Hole 12.5pF Cylindrical 2 2mm 2mm 6mm 6 x 2 x 2mm ±20ppm - 50kΩ - -