.hide-partial { max-height: none; } .show-more { display: none; }

4 mm Opto-electronics

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Opto-electronics

List Images

Results: 277

Applied Filters:

Width = 4 mm

Manufacturer

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Single Colour LEDs Yellow 590nm 250mcd 20mA SSL-LX3054SYD Lumex 1: £0.39 2,798In Stock	Mfr. Part No. SSL-LX3054SYD Mouser Part No 696-SSL-LX3054SYD	Lumex	Single Colour LEDs Yellow 590nm 250mcd 20mA	Datasheet	2,798In Stock	£0.39 £0.27 £0.194 £0.149 View £0.138 £0.123 £0.117 £0.108	Min.: 1 Mult.: 1
Single Colour LEDs Blue 470nm 80mcd 20mA SSL-LX3054USBD Lumex 1: £1.25 891In Stock	Mfr. Part No. SSL-LX3054USBD Mouser Part No 696-SSL-LX3054USBD	Lumex	Single Colour LEDs Blue 470nm 80mcd 20mA	Datasheet	891In Stock	£1.25 £0.849 £0.638 £0.554 View £0.512 £0.496 £0.475 £0.453 Quote	Min.: 1 Mult.: 1
Single Colour LEDs Yellow 585nm 30mcd 20mA SSL-LX3054YD Lumex 1: £0.271 1,964In Stock	Mfr. Part No. SSL-LX3054YD Mouser Part No 696-SSL-LX3054YD	Lumex	Single Colour LEDs Yellow 585nm 30mcd 20mA	Datasheet	1,964In Stock	£0.271 £0.184 £0.131 £0.11 View £0.10 £0.093 £0.083 £0.078 £0.072	Min.: 1 Mult.: 1
Multi-Colour LEDs Green/Yellow Milky White SSL-LX3059GYW Lumex 1: £0.458 2,316In Stock 5,000Expected 30/11/2026	Mfr. Part No. SSL-LX3059GYW Mouser Part No 696-SSL-LX3059GYW	Lumex	Multi-Colour LEDs Green/Yellow Milky White	Datasheet	2,316In Stock 5,000Expected 30/11/2026	£0.458 £0.315 £0.228 £0.187 View £0.163 £0.151 £0.143 £0.135	Min.: 1 Mult.: 1
Multi-Colour LEDs Red/Green Milky White SSL-LX3059IGW Lumex 1: £0.421 2,719In Stock 20,000Expected 25/11/2026	Mfr. Part No. SSL-LX3059IGW Mouser Part No 696-SSL-LX3059IGW	Lumex	Multi-Colour LEDs Red/Green Milky White	Datasheet	2,719In Stock 20,000Expected 25/11/2026	£0.421 £0.291 £0.21 £0.172 View £0.149 £0.138 £0.131 £0.123	Min.: 1 Mult.: 1
Single Colour LEDs Red 635nm 50mcd 12mA SSL-LX3054IT-12V Lumex 1: £0.458 5,445In Stock	Mfr. Part No. SSL-LX3054IT-12V Mouser Part No 696-SSLLX3054IT12V	Lumex	Single Colour LEDs Red 635nm 50mcd 12mA	Datasheet	5,445In Stock	£0.458 £0.316 £0.228 £0.189 View £0.175 £0.164 £0.153 £0.141 £0.13	Min.: 1 Mult.: 1
Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color HE Red/Grn 3BC-3-F Bivar 1: £0.578 799In Stock	Mfr. Part No. 3BC-3-F Mouser Part No 749-3BC-3-F	Bivar	Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color HE Red/Grn	Datasheet	799In Stock	£0.578 £0.40 £0.291 £0.241 View £0.212 £0.196 £0.187 £0.177	Min.: 1 Mult.: 1
Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color HE Red/Yel 3BC-3-R/Y-F Bivar 1: £0.615 799In Stock	Mfr. Part No. 3BC-3-R/Y-F Mouser Part No 749-3BC-3-R/Y-F	Bivar	Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color HE Red/Yel	Datasheet	799In Stock	£0.615 £0.415 £0.293 £0.243 View £0.223 £0.209 £0.172 £0.168	Min.: 1 Mult.: 1
Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color Yel/Grn 3BC-3-Y/G-F Bivar 1: £0.615 1,261In Stock	Mfr. Part No. 3BC-3-Y/G-F Mouser Part No 749-3BC-3-Y/G-F	Bivar	Multi-Colour LEDs LED Thru-Hole 3mm Bi-Color Yel/Grn	Datasheet	1,261In Stock	£0.615 £0.415 £0.321 £0.313 View £0.282 £0.203 £0.172	Min.: 1 Mult.: 1
Single Colour LEDs LED PMI SSL-LX3034GD Lumex 1: £0.233 4,443In Stock	Mfr. Part No. SSL-LX3034GD Mouser Part No 696-SSL-LX3034GD	Lumex	Single Colour LEDs LED PMI	Datasheet	4,443In Stock	£0.233 £0.159 £0.113 £0.091 View £0.072 £0.062 £0.06	Min.: 1 Mult.: 1
Single Colour LEDs LED PMI SSL-LX30S54YD Lumex 1: £0.421 395In Stock	Mfr. Part No. SSL-LX30S54YD Mouser Part No 696-SSL-LX30S54YD	Lumex	Single Colour LEDs LED PMI	Datasheet	395In Stock	£0.421 £0.276 £0.185 £0.132 View £0.112 £0.108 £0.101 £0.095 £0.087	Min.: 1 Mult.: 1
Single Colour LEDs AllnGaP 204-10SURT/S530-A3 Everlight Restricted Availability	Mfr. Part No. 204-10SURT/S530-A3 Mouser Part No 638-20410SURTS530A3	Everlight	Single Colour LEDs AllnGaP Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
Multi-Colour LEDs 4x4mm RA Red/Green PLCC2 AA4040R3G2CT/R-10MAT Kingbright 1: £1.13 Lead-Time 10 Weeks	Mfr. Part No. AA4040R3G2CT/R-10MAT Mouser Part No 604-AA4040R3G2CT/R10	Kingbright	Multi-Colour LEDs 4x4mm RA Red/Green PLCC2 Learn More about Kingbright high temperature leds	Datasheet	Lead-Time 10 Weeks	Cut Tape £1.13 £0.89 £0.667 Reel £0.57 £0.539 View £0.512 £0.49 £0.423 MouseReel Available	Min.: 1 Mult.: 1 : 500
Infrared Emitters Emitter Clear 940nm LTE-209 LITEON 1: £0.48 36,109Expected 25/11/2026	Mfr. Part No. LTE-209 Mouser Part No 859-LTE-209	LITEON	Infrared Emitters Emitter Clear 940nm Learn More about LITEON ir leds	Datasheet	36,109Expected 25/11/2026	£0.48 £0.313 £0.209 £0.144 View £0.127 £0.116 £0.107 £0.101 £0.095	Min.: 1 Mult.: 1
LED Lighting Driver ICs Funlight Led Driver A 926-LP3943ISQX/NOP A 926-LP3943ISQX/NOPB LP3943ISQ/NOPB Texas Instruments 1: £2.55 1,990Expected 02/11/2026	Mfr. Part No. LP3943ISQ/NOPB Mouser Part No 926-LP3943ISQ/NOPB	Texas Instruments	LED Lighting Driver ICs Funlight Led Driver A 926-LP3943ISQX/NOP A 926-LP3943ISQX/NOPB	Datasheet	1,990Expected 02/11/2026	Cut Tape £2.55 £1.90 £1.75 £1.57 Reel £1.38 View £1.48 £1.46 £1.31 £1.29 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Single Colour LEDs 4x4mm RA Red PLCC2 AA4040LSURCKT-AMT Kingbright 1: £0.615 5,219Expected 12/11/2026	Mfr. Part No. AA4040LSURCKT-AMT Mouser Part No 604-AA4040LSURCKTAMT	Kingbright	Single Colour LEDs 4x4mm RA Red PLCC2 Learn More about Kingbright high temperature leds	Datasheet	5,219Expected 12/11/2026	Cut Tape £0.615 £0.431 £0.316 Reel £0.27 £0.238 View £0.223 £0.217 £0.206 £0.201 MouseReel Available	Min.: 1 Mult.: 1 : 500
Single Colour LEDs 4x4mm RA Yellow PLCC2 AA4040LSYCKT/J3-AMT Kingbright 1: £0.736 1,497Expected 23/11/2026	Mfr. Part No. AA4040LSYCKT/J3-AMT Mouser Part No 604-AA4040LSYCKTJ3AM	Kingbright	Single Colour LEDs 4x4mm RA Yellow PLCC2 Learn More about Kingbright high temperature leds	Datasheet	1,497Expected 23/11/2026	Cut Tape £0.736 £0.516 £0.381 Reel £0.307 £0.291 View £0.278 £0.272 £0.264 MouseReel Available	Min.: 1 Mult.: 1 : 500
Single Colour LEDs AA4040SYSK/J3 Kingbright 1: £0.691 2,500Expected 28/12/2026	Mfr. Part No. AA4040SYSK/J3 Mouser Part No 604-AA4040SYSK/J3	Kingbright	Single Colour LEDs Learn More about Kingbright aa4040 smd leds	Datasheet	2,500Expected 28/12/2026	Cut Tape £0.691 £0.481 £0.354 Reel £0.298 £0.27 View £0.252 £0.245 £0.24 £0.232 MouseReel Available	Min.: 1 Mult.: 1 : 500
Single Colour LEDs Green Water Clear 525nm 1200mcd AA4040ZGS/G Kingbright 1: £0.796 3,000On Order	Mfr. Part No. AA4040ZGS/G Mouser Part No 604-AA4040ZGS/G	Kingbright	Single Colour LEDs Green Water Clear 525nm 1200mcd Learn More about Kingbright aa4040 smd leds	Datasheet	3,000On Order On Order Ship Dates Mfr. No: AA4040ZGS/G Stock: 0 On Order: 1,000 Expected 29/10/2026 2,000 Expected 12/11/2026 Factory Lead Time: 10 Weeks	Cut Tape £0.796 £0.559 £0.415 Reel £0.349 £0.317 View £0.298 £0.291	Min.: 1 Mult.: 1 : 500
Single Colour LEDs Yel Diffused 588nm 15mcd 60deg angle WP115A10YD Kingbright 1: £0.196 5,321On Order	Mfr. Part No. WP115A10YD Mouser Part No 604-WP115A10YD	Kingbright	Single Colour LEDs Yel Diffused 588nm 15mcd 60deg angle	Datasheet	5,321On Order On Order Ship Dates Mfr. No: WP115A10YD Stock: 0 On Order: 1,321 Expected 23/11/2026 4,000 Expected 27/11/2026 Factory Lead Time: 7 Weeks	£0.196 £0.135 £0.095 £0.092 View £0.073 £0.069 £0.059 £0.056 £0.052	Min.: 1 Mult.: 1
Multi-Colour LEDs Red Yellow 625 588nm Diffused 50 15mcd WP115VEYW Kingbright 1: £0.458 1,974Expected 19/11/2026	Mfr. Part No. WP115VEYW Mouser Part No 604-WP115VEYW	Kingbright	Multi-Colour LEDs Red Yellow 625 588nm Diffused 50 15mcd	Datasheet	1,974Expected 19/11/2026	£0.458 £0.319 £0.23 £0.19 View £0.167 £0.162 £0.151 £0.142 £0.133	Min.: 1 Mult.: 1
Photoelectric Sensors Fixed Field ; Range: 10 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 2 m (6.5 ft) Cable Q2FAN2FF10-2M Banner Engineering 1: £85.59 3Expected 03/11/2026 New Product	Mfr. Part No. Q2FAN2FF10-2M Mouser Part No 778-Q2FAN2FF10-2M New Product	Banner Engineering	Photoelectric Sensors Fixed Field ; Range: 10 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 2 m (6.5 ft) Cable Learn More about Banner Engineering banner q2f photoelectric sensors	Datasheet	3Expected 03/11/2026	£85.59	Min.: 1 Mult.: 1
Photoelectric Sensors Fixed Field ; Range: 15 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 150 mm (6 in) 4-pin M8 Pigtail QD Q2FAN2FF15-Q Banner Engineering 1: £85.59 3Expected 26/10/2026 New Product	Mfr. Part No. Q2FAN2FF15-Q Mouser Part No 778-Q2FAN2FF15-Q New Product	Banner Engineering	Photoelectric Sensors Fixed Field ; Range: 15 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 150 mm (6 in) 4-pin M8 Pigtail QD Learn More about Banner Engineering banner q2f photoelectric sensors	Datasheet	3Expected 26/10/2026	£85.59	Min.: 1 Mult.: 1
Photoelectric Sensors Fixed Field ; Range: 15 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 150 mm (6 in) 4-pin M12 Pigtail QD Q2FAN2FF15-Q5 Banner Engineering 1: £85.59 3Expected 26/10/2026 New Product	Mfr. Part No. Q2FAN2FF15-Q5 Mouser Part No 778-Q2FAN2FF15-Q5 New Product	Banner Engineering	Photoelectric Sensors Fixed Field ; Range: 15 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 150 mm (6 in) 4-pin M12 Pigtail QD Learn More about Banner Engineering banner q2f photoelectric sensors	Datasheet	3Expected 26/10/2026	£85.59	Min.: 1 Mult.: 1
Photoelectric Sensors Fixed Field ; Range: 30 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 2 m (6.5 ft) Cable Q2FAN2FF30-2M Banner Engineering 1: £85.59 3Expected 13/11/2026 New Product	Mfr. Part No. Q2FAN2FF30-2M Mouser Part No 778-Q2FAN2FF30-2M New Product	Banner Engineering	Photoelectric Sensors Fixed Field ; Range: 30 mm; Input 10-30 V dc ; Output: LO (Light Operate), 1 NPN ; 2 m (6.5 ft) Cable Learn More about Banner Engineering banner q2f photoelectric sensors	Datasheet	3Expected 13/11/2026	£85.59	Min.: 1 Mult.: 1