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Crystal Units

Crystal units are used as resonators in crystal oscillator circuits and have a 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. The mode of oscillation in the resonance frequency operation is specified at the fundamental frequency or the third overtone.

Crystal Unit Modes

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.

3475 Products showing for Crystal Units

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Currently unavailable
RS PRO 32 MHz Crystal ±10 ppm SMT 4-Pin 0.5 mm 2 mm 1.6mm
  • RS Stock No. 144-2284
Subtotal (10 units, in packs of 10)
£4.13(exc. VAT)
£0.413/unit
Currently unavailable
RS PRO 4 MHz Crystal ±50 ppm 2-Pin 10.5 mm
  • RS Stock No. 144-5019
Subtotal (20 units, in packs of 20)
£6.84(exc. VAT)
£0.342/unit
Currently unavailable
RS PRO 12 MHz Crystal ±20 ppm SMT 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 144-5056
Subtotal (20 units, in packs of 20)
£4.84(exc. VAT)
£0.242/unit
Currently unavailable
RS PRO 10 MHz Crystal ±30 ppm 2-Pin 3.5 mm 11.35 mm 5mm
  • RS Stock No. 144-1033
Subtotal (25 units, in packs of 25)
£4.15(exc. VAT)
£0.166/unit
Currently unavailable
RS PRO 16 MHz Crystal ±20 ppm SMT 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 144-5064
Subtotal (20 units, in packs of 20)
£5.02(exc. VAT)
£0.251/unit
Currently unavailable
RS PRO 4.9152 MHz Crystal ±30 ppm 2-Pin 4.6 mm 12 mm 3.8mm
  • RS Stock No. 144-1088
Subtotal (25 units, in packs of 25)
£4.50(exc. VAT)
£0.18/unit
Currently unavailable
RS PRO 4.1943 MHz Crystal ±30 ppm 2-Pin 4.6 mm 12 mm 3.8mm
  • RS Stock No. 144-1087
Subtotal (25 units, in packs of 25)
£4.50(exc. VAT)
£0.18/unit
Currently unavailable
RS PRO 12 MHz Crystal ±20 ppm SMT 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 144-5057
Subtotal (20 units, in packs of 20)
£4.48(exc. VAT)
£0.224/unit
Currently unavailable
RS PRO 32.768 kHz Crystal ±10 ppm SMT 2-Pin 0.8 mm 3.2 mm 1.5mm
  • RS Stock No. 144-2326
Subtotal (20 units, in packs of 20)
£13.70(exc. VAT)
£0.685/unit
In Stock
QANTEK 8 MHz Crystal Unit ±30 ppm Surface Mount 4-Pin 3.7 mm 12.5 mm 4.6mm
  • RS Stock No. 823-8931P
  • Mfr. Part No. QCP98.00000F18B35R
Subtotal (1 unit, supplied on a continuous strip)
£1.15(exc. VAT)
£1.15/unit
In Stock
Euroquartz 16 MHz Crystal ±30 ppm HC-49 2-Pin 3.5 mm 10.77 mm 4.34mm
  • RS Stock No. 693-8819
  • Mfr. Part No. 16.000MHz HC49/4H/30/50/-40+85/18pF/ATF
Subtotal (1 unit)
£0.46(exc. VAT)
£0.46/unit
In Stock
Abracon 16 MHz Crystal Unit ±10 ppm Surface Mount 4-Pin 0.8 mm 3.2 mm 2.5mm
  • RS Stock No. 187-5959P
  • Mfr. Part No. ABM8-16.000MHZ-12-K1-T
Subtotal (10 units, supplied on a continuous strip)
£3.06(exc. VAT)
£0.306/unit
In Stock
Abracon 16 MHz Crystal Unit ±20 ppm Surface Mount 4-Pin 0.8 mm 3.2 mm 2.5mm
  • RS Stock No. 171-2817
  • Mfr. Part No. ABM8AIG-16.000MHZ-12-2Z-T3
Subtotal (5 units, in packs of 5)
£4.84(exc. VAT)
£0.968/unit
Last RS stock
Abracon 0.032768 MHz Crystal ±20 ppm Cylindrical 2-Pin 16.3 mm 3.1mm
  • RS Stock No. 226-0725
  • Mfr. Part No. FKT38EIHQ0.032768
Subtotal (1 unit)
£0.47(exc. VAT)
£0.47/unit
In Stock
Wurth Elektronik 27.12 MHz Crystal ±10.00 ppm SMT 4-Pin 2.5 mm 3.2 mm 2.5mm
  • RS Stock No. 197-471
  • Mfr. Part No. 830053099
Subtotal (10 units, on tapes of 10)
£4.04(exc. VAT)
£0.404/unit
In Stock
Wurth Elektronik 16 MHz Crystal ±20.00 ppm SMT 4-Pin 2.5 mm 3.2 mm 2.5mm
  • RS Stock No. 197-626
  • Mfr. Part No. 830055951
Subtotal (10 units, on tapes of 10)
£5.35(exc. VAT)
£0.535/unit
In Stock
Abracon 24 MHz Crystal Unit ±20 ppm Surface Mount 4-Pin 1 mm 3.2 mm 2.5mm
  • RS Stock No. 171-2708P
  • Mfr. Part No. ABM8G-24.000MHZ-18-D2Y-T
Subtotal (10 units, supplied on a continuous strip)
£3.43(exc. VAT)
£0.343/unit
In Stock
Wurth Elektronik 32.768 kHz Crystal ±15 ppm Cylindrical 2-Pin 8.2 mm 3mm
  • RS Stock No. 197-712
  • Mfr. Part No. 830002996B
Subtotal (10 units, on tapes of 10)
£1.54(exc. VAT)
£0.154/unit
In Stock
MERCURY 4 MHz Crystal ±30 ppm HC-49-US 2-Pin 3.5 mm 10.7 mm 4.3mm
  • RS Stock No. 672-0255
  • Mfr. Part No. HUS-4.000-18-30/50/4085
Subtotal (5 units, in packs of 5)
£1.91(exc. VAT)
£0.382/unit
In Stock
Abracon 48 MHz Crystal 30 ppm Surface Mount 1 mm 3.2 mm 2.5mm
  • RS Stock No. 232-7257P
  • Mfr. Part No. ABM8G-48.000MHZ-B4Y-T
Subtotal (10 units, supplied on a continuous strip)
£3.46(exc. VAT)
£0.346/unit
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