5mm Flat Top Concave Wide Angle Cool / Clear White LED - Similar to Christmas LED Lights

The 5mm Cool White LED (Flat Top Concave) delivers a wide viewing angle for even illumination from off-axis positions — the right choice when you need automotive gauge cluster and HVAC backlighting, Christmas string light LED replacements, and any application where maximum even coverage is critical.

The concave (dished inward) lens surface scatters light across nearly a full hemisphere — the widest beam in the flat top lineup (150-180 Degrees viewing angle). This is the variant to choose when standard flat top dispersion is not wide enough.

Why flat top instead of round top?

A standard round-top 5mm LED has a 15–30 degree beam — bright when viewed straight on, but nearly invisible from the side. The flat top (sometimes called a flat head LED or square LED due to its flat lens face) spreads that light wide, making the LED clearly visible whether you are looking down from a standing position, viewing a panel from across a room, or backlighting a translucent surface that needs even coverage with no hotspots.

Common applications

• Automotive gauge cluster backlighting: modern instrument cluster relamp (cool crisp white), dome/map light upgrade. The wide beam eliminates the bright-center/dark-edges problem that round-top LEDs cause behind gauge faces. Drop-in for GM Silverado/Sierra, Honda Civic, Jeep Wrangler TJ, Ford Mustang, and Toyota/Lexus clusters. The concave lens provides maximum coverage — fewer LEDs needed for full-face illumination.
• Christmas string light replacements: The ultra-wide beam makes concave flat tops an ideal LED replacement for burnt-out incandescent C7/C9 string light bulbs. The wide dispersion mimics the omnidirectional glow of traditional bulbs without the narrow-beam spotlight effect of standard LEDs.
• Guitar pedal status indicators: Cool white provides clean, bright indication without color tinting. The flat top is the standard choice on DIYStompboxes, r/diypedals, and The Gear Page. Visible from a standing position looking down at your pedalboard — a narrow round-top would appear dim from that angle.
• Arcade pushbutton illumination: Lights up the entire translucent button cap (Sanwa, Seimitsu, Happ/IL) with even color instead of a single bright dot. Also used for marquee backlighting in BYOAC cabinet builds.
• Model railroad building interiors: commercial and industrial structure lighting (fluorescent look). The wide angle fills HO and N scale structure interiors with realistic lighting instead of a spotlight effect.
• Panel indicators and control boxes: Fits standard 5mm LED holders and panel bezels. The wide angle means the indicator is readable from anywhere in front of the panel, not just dead center.
• Breadboard prototyping: The flat top sits stable in a breadboard hole without rocking, and the wide beam is visible from normal desk-level viewing angles.

5mm is the standard size for most flat top applications — direct replacement for T10 wedge bulbs in automotive clusters, standard fit for arcade pushbuttons, and visible at distance for panel indicators.

Standard T-1 3/4 through-hole footprint. Fits all 5mm LED holders, bezels, and panel-mount clips.

Sold individually (1 LED per quantity ordered).