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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Description Price Standard Frequency Mounting Type Load Capacitance Package Type Pin Count Length Width Height Dimensions Frequency Tolerance Frequency Stability Series Resistance Minimum Operating Temperature Automotive Standard
RS Stock No. 671-9274
Mfr. Part No.CAA-20.000-18-3050-X
BrandAKER
HK$6.32
Each (In a Pack of 5)
units
20MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 40Ω -40 °C -
RS Stock No. 173-4361
Mfr. Part No.CAA-20.000-18-3050-X
BrandAKER
HK$3.208
Each (On a Reel of 250)
units
20MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 40Ω -40 °C -
RS Stock No. 671-9224
Mfr. Part No.CAA-4.000-18-3050-X
BrandAKER
HK$6.44
Each (In a Pack of 5)
units
4MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 120Ω -40 °C -
RS Stock No. 173-4768
Mfr. Part No.CAA-4.000-18-3050-X
BrandAKER
HK$3.77
Each (On a Reel of 250)
units
4MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 120Ω -40 °C -
RS Stock No. 173-4547
Mfr. Part No.C3E-20.000-12-3030-X
BrandAKER
HK$11.602
Each (On a Reel of 250)
units
20MHz Surface Mount 12pF SMD 4 3.2mm 2.5mm 0.75mm 3.2 x 2.5 x 0.75mm ±30ppm ±30ppm 100Ω -40 °C -
RS Stock No. 671-9536
Mfr. Part No.C3E-20.000-12-3030-X
BrandAKER
HK$11.96
Each (In a Pack of 5)
units
20MHz Surface Mount 12pF SMD 4 3.2mm 2.5mm 0.75mm 3.2 x 2.5 x 0.75mm ±30ppm ±30ppm 100Ω -40 °C -
RS Stock No. 173-5905
Mfr. Part No.C7S-10.000-12-50100-X1
BrandAKER
HK$24.119
Each (On a Reel of 250)
units
10MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±50ppm ±100ppm 110Ω -40 °C -
RS Stock No. 671-9549
Mfr. Part No.C2E-16.000-12-3030-X
BrandAKER
HK$42.20
Each
units
16MHz Surface Mount 12pF SMD 4 2.5mm 2mm 0.6mm 2.5 x 2 x 0.6mm ±30ppm ±30ppm 100Ω -40 °C -
RS Stock No. 671-9242
Mfr. Part No.CAA-8.000-18-3050-X
BrandAKER
HK$6.32
Each (In a Pack of 5)
units
8MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 60Ω -40 °C -
RS Stock No. 173-5655
Mfr. Part No.CA4-7.3728-18-3050-X
BrandAKER
HK$7.63
Each (On a Reel of 250)
units
7.3728MHz Surface Mount 18pF HC-49-US SMD 4 13mm 4.7mm 5.2mm 13 x 4.7 x 5.2mm ±30ppm ±50ppm 80Ω -40 °C -
RS Stock No. 671-9485
Mfr. Part No.C5S-14.7456-12-3030-X
BrandAKER
HK$5.69
Each (In a Pack of 5)
units
14.7456MHz Surface Mount 12pF SMD 4 5mm 3.2mm 1mm 5 x 3.2 x 1mm ±30ppm ±30ppm 70Ω -40 °C -
RS Stock No. 671-9410
Mfr. Part No.C7S-25.000-12-3030-X
BrandAKER
HK$17.51
Each (In a Pack of 5)
units
25MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±30ppm ±30ppm 30Ω -40 °C -
RS Stock No. 671-9511
Mfr. Part No.C3E-14.7456-12-3030-X
BrandAKER
HK$11.86
Each (In a Pack of 5)
units
14.7456MHz Surface Mount 12pF SMD 4 3.2mm 2.5mm 0.75mm 3.2 x 2.5 x 0.75mm ±30ppm ±30ppm 100Ω -40 °C -
RS Stock No. 671-9527
Mfr. Part No.C3E-18.432-12-3030-X
BrandAKER
HK$11.96
Each (In a Pack of 5)
units
18.432MHz Surface Mount 12pF SMD 4 3.2mm 2.5mm 0.75mm 3.2 x 2.5 x 0.75mm ±30ppm ±30ppm 100Ω -40 °C -
RS Stock No. 173-5764
Mfr. Part No.C7S-16.384-12-3030-X
BrandAKER
HK$9.606
Each (On a Reel of 250)
units
16.384MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±30ppm ±30ppm 45Ω -40 °C -
RS Stock No. 173-4506
Mfr. Part No.C7S-11.0592-12-3030-X
BrandAKER
HK$9.89
Each (On a Reel of 250)
units
11.0592MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±30ppm ±30ppm 60Ω -40 °C -
RS Stock No. 671-9375
Mfr. Part No.C7S-8.000-12-3030-X
BrandAKER
HK$16.88
Each (In a Pack of 5)
units
8MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±30ppm ±30ppm 110Ω -40 °C -
RS Stock No. 671-9413
Mfr. Part No.C7S-24.000-12-3030-X
BrandAKER
HK$16.60
Each (In a Pack of 5)
units
24MHz Surface Mount 12pF SMD 4 7mm 5mm 1.1mm 7 x 5 x 1.1mm ±30ppm ±30ppm 30Ω -40 °C -
RS Stock No. 173-5782
Mfr. Part No.C6S-20.000-12-3030-X
BrandAKER
HK$12.628
Each (On a Reel of 250)
units
20MHz Surface Mount 12pF SMD 4 6mm 3.5mm 1mm 6 x 3.5 x 1mm ±30ppm ±30ppm 40Ω -40 °C -
RS Stock No. 173-4351
Mfr. Part No.CAA-4.194304-18-3050-X
BrandAKER
HK$3.77
Each (On a Reel of 250)
units
4.1943MHz Surface Mount 18pF HC-49-US SMD 2 13.5mm 4.8mm 4.6mm 13.5 x 4.8 x 4.6mm ±30ppm ±50ppm 120Ω -40 °C -