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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Standard Clock Oscillators XO (Standard),4MHz,Standby (Power Down),CMOS, Multi-Volt,1.6 V 3.6 V, 50ppm,-40 C 85 C,7mA,Surface Mount,4-SMD, No Lead,(2.50mm x 2.00mm),(0.80mm) ECS-2520MV-040-BN-TR ECS 1: £0.818 506In Stock	Mfr. Part No. ECS-2520MV-040-BN-TR Mouser Part No 520-2520MV-040-BN-TR	ECS	Standard Clock Oscillators XO (Standard),4MHz,Standby (Power Down),CMOS, Multi-Volt,1.6 V 3.6 V, 50ppm,-40 C 85 C,7mA,Surface Mount,4-SMD, No Lead,(2.50mm x 2.00mm),(0.80mm)	Datasheet	506In Stock	Cut Tape £0.818 £0.675 £0.654 £0.627 Reel £0.57 View £0.608 £0.586 £0.537 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Standard Clock Oscillators 4.000 MHz Multi-Volt 1.6 3.6V 25 ppm -40 +85 C 4-SMD 2.5x2.0mm Low Current RoHS ECS-2520MVLC-040-CN-TR ECS 1: £0.952 1,345In Stock	Mfr. Part No. ECS-2520MVLC-040-CN-TR Mouser Part No 520-2520MVLC-040CNTR	ECS	Standard Clock Oscillators 4.000 MHz Multi-Volt 1.6 3.6V 25 ppm -40 +85 C 4-SMD 2.5x2.0mm Low Current RoHS	Datasheet	1,345In Stock	Cut Tape £0.952 £0.759 £0.72 £0.681 Reel £0.623 View £0.653 £0.565 £0.527 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators 1.6V 3.6V XO 2.50mm x 2.00mm CMOS -40 C 85 C Standby (Power Down) 50ppm 4 MHz 1.8mA 2.7 A ECS-2520MVLC-040-BN-TR ECS 1: £0.986 908In Stock 1,000On Order	Mfr. Part No. ECS-2520MVLC-040-BN-TR Mouser Part No 520-2520MVLC040BN-TR	ECS	Standard Clock Oscillators 1.6V 3.6V XO 2.50mm x 2.00mm CMOS -40 C 85 C Standby (Power Down) 50ppm 4 MHz 1.8mA 2.7 A Learn More about ECS 2520 mvlc multivolt oscillators	Datasheet	908In Stock 1,000On Order	Cut Tape £0.986 £0.78 £0.746 £0.705 Reel £0.626 View £0.606 £0.563 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators XTAL OSC XO 4.000MHZ CMOS SMD ECS-3225MVLC-040-CN-TR ECS 1: £0.871 1,490In Stock	Mfr. Part No. ECS-3225MVLC-040-CN-TR Mouser Part No 520-3225MVLC-040CNTR	ECS	Standard Clock Oscillators XTAL OSC XO 4.000MHZ CMOS SMD Learn More about ECS 3225mvlc	Datasheet	1,490In Stock	Cut Tape £0.871 £0.684 £0.656 £0.62 Reel £0.50 View £0.595 £0.582 £0.472 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Standard Clock Oscillators 5V 4MHz EXTENDED TEMP ECS-3951M-040-BN-TR ECS 1: £1.27 973In Stock 1,000Expected 18/03/2027	Mfr. Part No. ECS-3951M-040-BN-TR Mouser Part No 520-3951M-040-BN	ECS	Standard Clock Oscillators 5V 4MHz EXTENDED TEMP	Datasheet	973In Stock 1,000Expected 18/03/2027	Cut Tape £1.27 £1.00 £0.969 £0.917 Reel £0.863 View £0.882 £0.78 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators 4MHz 3.3V 5 X 7mm -55 to 125C ECS-3953M-040-AU-TR ECS 1: £1.84 139In Stock 1,000Expected 02/11/2026	Mfr. Part No. ECS-3953M-040-AU-TR Mouser Part No 520-3953M-040-AU	ECS	Standard Clock Oscillators 4MHz 3.3V 5 X 7mm -55 to 125C Learn More about ECS 3951m 3953m au clock oscillators	Datasheet	139In Stock 1,000Expected 02/11/2026	Cut Tape £1.84 £1.46 £1.33 £1.27 Reel £1.13 View £1.14 £1.13 £1.02 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators ECS-3953M,OSC XO 4.000MHZ HCMOS SMD,3.3V, 50ppm,-10 C 70 C,15mA,Surface Mount,0.295" L x 0.197" W (7.50mm x 5.00mm),0.069" (1.75mm) ECS-3953M-040-B-TR ECS 1: £1.48 1,029In Stock	Mfr. Part No. ECS-3953M-040-B-TR Mouser Part No 520-3953M-040-B-TR	ECS	Standard Clock Oscillators ECS-3953M,OSC XO 4.000MHZ HCMOS SMD,3.3V, 50ppm,-10 C 70 C,15mA,Surface Mount,0.295" L x 0.197" W (7.50mm x 5.00mm),0.069" (1.75mm) Learn More about ECS 3951m 3953m smd clock oscillators	Datasheet	1,029In Stock	Cut Tape £1.48 £1.17 £1.12 £1.06 Reel £0.995 View £1.04 £0.882 £0.803 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4MHz 18pF 100ppm -40C +85C ECS-40-18-18-TR ECS 1: £2.78 239In Stock 1,000Expected 08/06/2027	Mfr. Part No. ECS-40-18-18-TR Mouser Part No 520-40-18-18-TR	ECS	Crystals 4MHz 18pF 100ppm -40C +85C	Datasheet	239In Stock 1,000Expected 08/06/2027	Cut Tape £2.78 £2.42 £2.28 £2.19 £2.15 Reel £2.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4MHz 18pF -10C +70C ECS-40-18-4XEN ECS 1: £0.39 3,003In Stock	Mfr. Part No. ECS-40-18-4XEN Mouser Part No 520-40-18-4XEN	ECS	Crystals 4MHz 18pF -10C +70C Learn More about ECS hc 49usx quartz crystals	Datasheet	3,003In Stock	£0.39 £0.306 £0.27 £0.262 View £0.255 £0.24 £0.217	Min.: 1 Mult.: 1
Crystals 4MHz 20ppm 30ppm 18pF 150 Ohm Fundamental -40 C 85 C - Surface Mount HC49/US - 3 Lead 0.449" L x 0.185" W (11.40mm x 4.70mm) 0.165" (4.20mm) ECS-40-18-5G3X-JGN-TR ECS 1: £0.353 635In Stock	Mfr. Part No. ECS-40-18-5G3X-JGN-TR Mouser Part No 520-40-18-5G3X-JGNTR	ECS	Crystals 4MHz 20ppm 30ppm 18pF 150 Ohm Fundamental -40 C 85 C - Surface Mount HC49/US - 3 Lead 0.449" L x 0.185" W (11.40mm x 4.70mm) 0.165" (4.20mm) Learn More about ECS csm 7x 3l smd crystals	Datasheet	635In Stock	Cut Tape £0.353 £0.277 £0.251 £0.241 Reel £0.23 View £0.206 £0.197 £0.181 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4MHz 18pF 50ppm -40C +85C ECS-40-18-5PXEN-TR ECS 1: £0.255 1,590In Stock	Mfr. Part No. ECS-40-18-5PXEN-TR Mouser Part No 520-40-18-5PXEN	ECS	Crystals 4MHz 18pF 50ppm -40C +85C Learn More about ECS csm 7x quartz crystals	Datasheet	1,590In Stock	Cut Tape £0.255 £0.247 Reel £0.247 £0.224 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4.000 MHz 20 pF CSM-4AX +/-30/50 ppm -40 - +85C RoHS ECS-40-20-28AX-EN-TR ECS 1: £0.834 1,632In Stock	Mfr. Part No. ECS-40-20-28AX-EN-TR Mouser Part No 520-40-20-28AX-EN-TR	ECS	Crystals 4.000 MHz 20 pF CSM-4AX +/-30/50 ppm -40 - +85C RoHS Learn More about ECS csm 4ax smd crystals	Datasheet	1,632In Stock	Cut Tape £0.834 £0.657 £0.63 £0.596 Reel £0.547 View £0.572 £0.502 £0.44 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals CRYSTAL 4.0000MHZ SERIES SMD,CSM-7X, 50ppm, 30ppm,Series,150 Ohm,Fundamental,-10 C 70 C,HC49/US,0.449" L x 0.189" W (11.40mm x 4.80mm),0.169" (4.30mm) ECS-40-S-5PX-TR ECS 1: £0.263 1,606In Stock	Mfr. Part No. ECS-40-S-5PX-TR Mouser Part No 520-40-S-5PX-TR	ECS	Crystals CRYSTAL 4.0000MHZ SERIES SMD,CSM-7X, 50ppm, 30ppm,Series,150 Ohm,Fundamental,-10 C 70 C,HC49/US,0.449" L x 0.189" W (11.40mm x 4.80mm),0.169" (4.30mm) Learn More about ECS csm 7x quartz crystals	Datasheet	1,606In Stock	Cut Tape £0.263 £0.208 £0.189 £0.181 Reel £0.173 View £0.162 £0.153 £0.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators 4MHz 1.8-3.3V 25ppm -40C +85C ECS-5032MV-40-CN-TR ECS 1: £1.01 1,390In Stock	Mfr. Part No. ECS-5032MV-40-CN-TR Mouser Part No 520-5032MV-40-CNT	ECS	Standard Clock Oscillators 4MHz 1.8-3.3V 25ppm -40C +85C Learn More about ECS 5032mv xtal oscillators	Datasheet	1,390In Stock	Cut Tape £1.01 £0.796 £0.766 £0.721 Reel £0.663 View £0.692 £0.62 £0.552 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4MHz 20pF ECS-40-20-5PXDN-TR ECS 1: £0.292 1,897In Stock 15,000Expected 16/02/2027	Mfr. Part No. ECS-40-20-5PXDN-TR Mouser Part No 520-CSM400-20DN-X	ECS	Crystals 4MHz 20pF	Datasheet	1,897In Stock 15,000Expected 16/02/2027	Cut Tape £0.292 £0.233 £0.215 Reel £0.215 £0.196 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Standard Clock Oscillators 2.5V 4MHz SMD CLOCK ECS-3525-040-B-TR ECS 1: £1.26 490In Stock	Mfr. Part No. ECS-3525-040-B-TR Mouser Part No 520-ECS-3525-4	ECS	Standard Clock Oscillators 2.5V 4MHz SMD CLOCK	Datasheet	490In Stock	Cut Tape £1.26 £1.17 Reel £1.17 £1.07 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals HC-49USX, 4MHz, 18pF, +/-30ppm, +/-50ppm, -10C +70 C, RoHS ECS-40-18-4X ECS 1: £0.48 220In Stock	Mfr. Part No. ECS-40-18-4X Mouser Part No 520-ECS-40-18-4X	ECS	Crystals HC-49USX, 4MHz, 18pF, +/-30ppm, +/-50ppm, -10C +70 C, RoHS Learn More about ECS hc 49usx quartz crystals	Datasheet	220In Stock	Cut Tape £0.48 £0.377 £0.336 Reel £0.336 £0.325 View £0.313 £0.275 £0.262 £0.248	Min.: 1 Mult.: 1 : 200
Crystals 4.000 MHz ECS-40-20-28AX-TR ECS 1: £0.834 468In Stock 1,000Expected 02/03/2027	Mfr. Part No. ECS-40-20-28AX-TR Mouser Part No 520-ECS-40-20-28A	ECS	Crystals 4.000 MHz	Datasheet	468In Stock 1,000Expected 02/03/2027	Cut Tape £0.834 £0.657 £0.63 £0.596 Reel £0.535 View £0.571 £0.508 £0.482 £0.466 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Crystals 4MHz 18pF ECS-40-18-10X ECS 1: £0.684 217In Stock 2,000Expected 06/11/2026	Mfr. Part No. ECS-40-18-10X Mouser Part No 520-ECS-400-18-10X	ECS	Crystals 4MHz 18pF	Datasheet	217In Stock 2,000Expected 06/11/2026	£0.684 £0.536 £0.514 £0.48 View £0.442 £0.422	Min.: 1 Mult.: 1
Crystals 4MHz 20pF ECS-40-20-1X ECS 1: £0.458 2,442In Stock	Mfr. Part No. ECS-40-20-1X Mouser Part No 520-HCA400-20X	ECS	Crystals 4MHz 20pF	Datasheet	2,442In Stock	£0.458 £0.364 £0.326 £0.315 View £0.303 £0.286 £0.274 £0.264	Min.: 1 Mult.: 1
Crystals 4MHz SERIES ECS-40-S-1X ECS 1: £0.458 286In Stock	Mfr. Part No. ECS-40-S-1X Mouser Part No 520-HCA400-SX	ECS	Crystals 4MHz SERIES	Datasheet	286In Stock	£0.458 £0.364 £0.326 £0.315 View £0.283 £0.268 £0.251 £0.236	Min.: 1 Mult.: 1
Crystals 4MHz 20pF EX/TEMP HC-49US ECS-40-20-4XDN ECS 1: £0.488 1,958In Stock	Mfr. Part No. ECS-40-20-4XDN Mouser Part No 520-HCU400-20DNX	ECS	Crystals 4MHz 20pF EX/TEMP HC-49US Learn More about ECS hc 49usx quartz crystals	Datasheet	1,958In Stock	£0.488 £0.384 £0.339 £0.33 View £0.32 £0.302 £0.28	Min.: 1 Mult.: 1
Crystals 4MHz 20pF ECS-40-20-4X ECS 1: £0.405 3,287In Stock 5,000Expected 06/11/2026	Mfr. Part No. ECS-40-20-4X Mouser Part No 520-HCU400-20X	ECS	Crystals 4MHz 20pF Learn More about ECS hc 49usx quartz crystals	Datasheet	3,287In Stock 5,000Expected 06/11/2026	£0.405 £0.324 £0.274 £0.265 View £0.257 £0.255 £0.241	Min.: 1 Mult.: 1
Crystals 4MHz SERIES ECS-40-S-4X ECS 1: £0.436 304In Stock	Mfr. Part No. ECS-40-S-4X Mouser Part No 520-HCU400-SX	ECS	Crystals 4MHz SERIES Learn More about ECS hc 49usx quartz crystals	Datasheet	304In Stock	£0.436 £0.347 £0.32 £0.311 View £0.283 £0.268 £0.256 £0.251 £0.243	Min.: 1 Mult.: 1
Buzzers & Audio Indicators - Industrial SIREN, 5-15VDC 105DB, 45X58X40MM PS523AQ Mallory Sonalert 1: £14.86 75In Stock	Mfr. Part No. PS523AQ Mouser Part No 539-PS523AQ	Mallory Sonalert	Buzzers & Audio Indicators - Industrial SIREN, 5-15VDC 105DB, 45X58X40MM	Datasheet	75In Stock	£14.86 £9.68 £8.50	Min.: 1 Mult.: 1

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