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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.

3336 Products showing for Crystal Units

Last RS stock
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 (1 pack of 20 units)
£13.70(exc. VAT)
£0.685/unit
Last RS stock
RS PRO 12 MHz Crystal ±20 ppm SMT 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 144-5056
Subtotal (1 pack of 20 units)
£4.84(exc. VAT)
£0.242/unit
Last RS stock
RS PRO 4.9152 MHz Crystal ±30 ppm 2-Pin 4.6 mm 12 mm 3.8mm
  • RS Stock No. 144-1088
Subtotal (1 pack of 25 units)
£4.50(exc. VAT)
£0.18/unit
Last RS stock
RS PRO 4 MHz Crystal ±50 ppm 2-Pin 10.5 mm
  • RS Stock No. 144-5019
Subtotal (1 pack of 20 units)
£6.84(exc. VAT)
£0.342/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 (1 pack of 25 units)
£4.50(exc. VAT)
£0.18/unit
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 (1 pack of 10 units)
£4.13(exc. VAT)
£0.413/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 (1 pack of 25 units)
£4.15(exc. VAT)
£0.166/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 (1 pack of 20 units)
£4.40(exc. VAT)
£0.22/unit
Last RS stock
RS PRO 16 MHz Crystal ±20 ppm SMT 4-Pin 0.7 mm 3.2 mm 2.5mm
  • RS Stock No. 144-5064
Subtotal (1 pack of 20 units)
£5.02(exc. VAT)
£0.251/unit
In Stock
IQD 2 MHz Crystal Unit ±50 ppm HC-49 2-Pin 13.46 mm 11.05 mm 4.65mm
  • RS Stock No. 148-5369
  • Mfr. Part No. LFXTAL003037B
Subtotal (1 pack of 10 units)
£11.91(exc. VAT)
£1.191/unit
In Stock
QANTEK 25 MHz Crystal ±20 ppm HC-49 2-Pin 3.5 mm 11.05 mm 4.65mm
  • RS Stock No. 814-9465
  • Mfr. Part No. QCL25.0000F18B23B
Subtotal (1 bag of 10 units)
£1.66(exc. VAT)
£0.166/unit
In Stock
ECS Inc International 12 MHz Crystal Oscillator ±10 ppm Ceramic package 4-Pin 0.8 mm 3.2 mm 2.5mm
  • RS Stock No. 301-216
  • Mfr. Part No. ECS-120-8-33B-CHN-TR
Subtotal (1 unit)
£0.36(exc. VAT)
£0.36/unit
In Stock
Euroquartz 8 MHz Crystal ±30 ppm HC-49 2-Pin 3.5 mm 10.77 mm 4.34mm
  • RS Stock No. 693-8793
  • Mfr. Part No. 8.000MHz HC49/4H/30/50/-40+85/18pF/ATF
Subtotal (1 unit)
£0.46(exc. VAT)
£0.46/unit
In Stock
Abracon 32.768 kHz Crystal Unit ±10 ppm Surface Mount 4-Pin 2.5 mm 8 mm 3.8mm
  • RS Stock No. 171-2692P
  • Mfr. Part No. ABS25-32.768KHZ-1-T
Subtotal 10 units (supplied on a continuous strip)
£7.80(exc. VAT)
£0.78/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 32.768 kHz Crystal ±20 ppm 2-Pin 2.1 mm 6.2 mm 2.1mm
  • RS Stock No. 171-0553
  • Mfr. Part No. AB26T-32.768KHZ
Subtotal (1 pack of 10 units)
£1.96(exc. VAT)
£0.196/unit
In Stock
CITIZEN FINEDEVICE 40 MHz Crystal Unit ±30 ppm 2-Pin 3.5 mm 11.5 mm 4.66mm
  • RS Stock No. 184-9616
  • Mfr. Part No. HC-49/U-S40000000ABJB
Subtotal (1 pack of 5 units)
£3.23(exc. VAT)
£0.646/unit
In Stock
Abracon 6.144 MHz Crystal 30 ppm Surface Mount 3.3 mm 11.4 mm 4.7mm
  • RS Stock No. 232-7216
  • Mfr. Part No. ABLS2-6.144MHZ-D4Y-T
Subtotal (1 pack of 25 units)
£4.85(exc. VAT)
£0.194/unit
Last RS stock
Euroquartz 32.768 kHz Crystal ±20 ppm Surface Mount 2-Pin 0.8 mm 4.8 mm 1.9mm
  • RS Stock No. 727-6267
  • Mfr. Part No. EQ160-32.768-12.5
Subtotal (1 bag of 5 units)
£7.00(exc. VAT)
£1.40/unit
In Stock
Abracon 3.072 MHz Crystal Unit ±30 ppm HC-49-US 2-Pin 4.2 mm 11.5 mm 4.7mm
  • RS Stock No. 240-0837P
  • Mfr. Part No. ABLS-LR-3.072MHZ-T
Subtotal 5 units (supplied on a continuous strip)
£13.75(exc. VAT)
£2.75/unit
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