550/551/555 Series LED Circuit Board Indicators

Dialight 550, 551, and 555 Series Single Level Circuit Board Indicators (CBI) are offered in 2mm, 3mm, and 5mm package sizes, and in a wide variety of colors. The 550 Series includes 5mm LEDs in green, red, yellow, and bi-color red/green, in top view, square back, and sloped back housing. Multiple 550 Series CBIs form horizontal LED arrays on 6.35mm, 7.24mm, or 7.62mm center-lines. The 551 Series includes 3mm LEDs in green, yellow, red, blue, bi-color red/green, and yellow/green. Multiple 551 Series CBIs form horizontal LED arrays on 4.2mm or 4.45mm center-lines. The 555 Series includes 2mm LEDs in yellow, red, and green, in single, top view, and quad packaging. Multiple 555 Series CBIs form horizontal LED arrays on 2.54mm center-lines. All of the Dialight 550/551/555 Series Single Level Circuit Board Indicators come in high contrast, UL 94 V-0 rated, black housing with housing stand-offs to facilitate PCB cleaning.

Results: 34
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Description Datasheet Availability Pricing (HKD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Illumination Colour
LED Size
Wavelength
Luminous Intensity
Mounting Type
Viewing Angle
Lens Colour/Style
If - Forward Current
Vf - Forward Voltage
Series
Packaging
Dialight LED Circuit Board Indicators CBI 3MM BLUE
Datasheet
2,700In Stock
Min.: 1
Mult.: 1

Blue 3 mm 428 nm 12 mcd Through Hole 70 deg Colorless, Diffused 10 mA 3.5 V 551 Bulk
Dialight LED Circuit Board Indicators RED/GREEN DIFFUSED 3 LEAD
Datasheet
1,213In Stock
1,100Expected 28/10/2026
Min.: 1
Mult.: 1

Red, Green 5 mm 5 mcd, 8 mcd Through Hole 65 deg Tinted, Diffused 10 mA 550 Bulk
Dialight LED Circuit Board Indicators YELLOW DIFFUSED LOW CURRENT
Datasheet
4,105In Stock
Min.: 1
Mult.: 1

Yellow 1.6 mcd Through Hole 60 deg Tinted 2 mA 1.8 V 551 Bulk
Dialight LED Circuit Board Indicators GREEN DIFFUSED 5 VOLT
Datasheet
3,498In Stock
1,600Expected 18/9/2026
Min.: 1
Mult.: 1

Green 2 mm 565 nm 2.5 mcd Through Hole 40 deg Tinted 20 mA 555 Bulk
Dialight LED Circuit Board Indicators GREEN DIFFUSED
Datasheet
1,010In Stock
Min.: 1
Mult.: 1

Green 565 nm 12.3 mcd Through Hole 60 deg Tinted 20 mA 2.1 V 550 Bulk
Dialight LED Circuit Board Indicators GREEN DIFFUSED
Datasheet
137In Stock
6,600On Order
Min.: 1
Mult.: 1

Green 565 nm 12.3 mcd Through Hole 60 deg Tinted 20 mA 2.1 V 550 Bulk
Dialight LED Circuit Board Indicators YELLOW DIFFUSED
Datasheet
1,791In Stock
Min.: 1
Mult.: 1

Yellow 5 mm 585 nm 12.3 mcd Through Hole 60 deg Tinted 20 mA 2.1 V 550 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED
Datasheet
529In Stock
1,400Expected 16/12/2026
Min.: 1
Mult.: 1

Red 635 nm 12.3 mcd Through Hole 60 deg Tinted 20 mA 2 V 550 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED
Datasheet
329In Stock
1,700Expected 16/12/2026
Min.: 1
Mult.: 1

Red 635 nm 12.3 mcd Through Hole 60 deg Tinted 20 mA 2 V 550 Bulk
Dialight LED Circuit Board Indicators CBI 5MM RGB W 4 LEADS
Datasheet
439In Stock
1,800Expected 16/9/2026
Min.: 1
Mult.: 1

Blue, Green, Red 3 mm 470 nm, 525 nm, 634 nm 2500 mcd, 3200 mcd, 6000 mcd 30 mA 2.7 V Bulk
Dialight LED Circuit Board Indicators HI EFF GREEN DIFF
Datasheet
2,383In Stock
4,700Expected 9/12/2026
Min.: 1
Mult.: 1

Green 563 nm 16 mcd Through Hole 45 deg Tinted 10 mA 2.1 V 551 Bulk
Dialight LED Circuit Board Indicators HI EFF RED DIFFUSED
Datasheet
746In Stock
1,500Expected 28/10/2026
Min.: 1
Mult.: 1

Red 650 nm 10 mcd Through Hole 45 deg Tinted 10 mA 2 V 551 Bulk
Dialight LED Circuit Board Indicators GREEN DIFFUSED 5 VOLTS
Datasheet
1,367In Stock
3,200On Order
Min.: 1
Mult.: 1

Green 565 nm 19 mcd Through Hole 60 deg Tinted 10 mA 5 V 551 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED LOW CURRENT
Datasheet
2,300In Stock
3,400Expected 9/12/2026
Min.: 1
Mult.: 1

Red 635 nm 1.6 mcd Through Hole 60 deg Tinted 2 mA 1.7 V 551 Bulk
Dialight LED Circuit Board Indicators RED/GREEN DIFFUSED
Datasheet
1,479In Stock
4,900On Order
Min.: 1
Mult.: 1

Red, Green 4.7 mcd, 10 mcd Through Hole 50 deg Tinted 10 mA 2 V 551 Bulk
Dialight LED Circuit Board Indicators YELLOW/GREEN DIFF
Datasheet
78In Stock
2,800On Order
Min.: 1
Mult.: 1

Green, Yellow 3 mm 585 nm, 565 nm 4.3 mcd, 6.3 mcd Through Hole 80 deg Tinted 10 mA 2.1 V, 2.1 V 551 Bulk
Dialight LED Circuit Board Indicators CBI 3MM RG W 3 LEADS
Datasheet
87In Stock
Min.: 1
Mult.: 1

Green, Red 3 mm 630 nm, 565 nm 75 deg 30 mA 2.6 V Bulk
Dialight LED Circuit Board Indicators YELLOW DIFFUSED
Datasheet
698In Stock
Min.: 1
Mult.: 1

Yellow 2 mm 583 nm 2 mcd Through Hole 40 deg Tinted 20 mA 2.2 V 555 Bulk
Dialight LED Circuit Board Indicators YELLOW DIFFUSED 5 VOLT
Datasheet
28In Stock
1,300Expected 11/8/2026
Min.: 1
Mult.: 1

Yellow 2 mm 583 nm 2.1 mcd Through Hole 40 deg Tinted 20 mA 5 V 555 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED 5 VOLT
Datasheet
772In Stock
Min.: 1
Mult.: 1

Red 2 mm 650 nm 0.9 mcd Through Hole 40 deg Tinted 20 mA 555 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED 24 VOLTS
Datasheet
1,125In Stock
Min.: 1
Mult.: 1

Red 2 mm 650 nm 0.9 mcd Through Hole 40 deg Tinted 20 mA 555 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED 5 VOLT
Datasheet
227In Stock
Min.: 1
Mult.: 1

Red 650 nm 1.9 mcd Through Hole 40 deg Tinted 6 mA 5 V 555 Bulk
Dialight LED Circuit Board Indicators RED DIFFUSED 5 VOLT
Datasheet
9In Stock
300Expected 16/9/2026
Min.: 1
Mult.: 1

Red 650 nm 0.9 mcd Through Hole 40 deg Tinted 3 mA 5 V 555 Bulk
Dialight LED Circuit Board Indicators GREEN DIFFUSED 5 VOLT
Datasheet
28In Stock
1,600On Order
Min.: 1
Mult.: 1

Green 2 mm 583 nm 2.5 mcd Through Hole 40 deg Tinted 4.7 mA 5 V 555 Bulk
Dialight LED Circuit Board Indicators HI EFF YELLOW DIFF
Datasheet
10,014On Order
Min.: 1
Mult.: 1

Yellow 585 nm Through Hole 50 deg Tinted 10 mA 2.1 V 550 Bulk