Product Overview
5mm Round Dome Water Clear Blue Solid-State Indicator Lamp
Condition
Unused new old stock (NOS). Leads are straight and unclipped with clean radial pins. Light emission confirmed under bench test. Offered as an individual component.
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Product Overview
This 5mm round-dome solid-state emitter delivers bright blue light through a transparent water-clear epoxy package. Built with standard radial through-hole wire leads, it mounts directly into perfboards, solderless breadboards, and custom control panels requiring dependable visual status indication.
Key Features
- Standard 5mm (T-1 3/4) diameter round-dome package
- Water-clear transparent epoxy lens
- Emitted light color: bright blue
- 2-pin radial through-hole wire leads for PCB and breadboard mounting
- Solid-state construction with no filament to burn out
Applications
- Prototyping circuit status on solderless breadboards during bench development
- Installing panel-mount indicators for custom test boxes, audio gear, and synthesizer projects
- Adding illuminated accents and functional status lighting to robotics and hobby builds
Frequently Asked Questions
How is polarity identified on this LED?
Polarity follows standard through-hole conventions: the longer lead is the anode (positive) and the shorter lead adjacent to the flat edge on the epoxy base rim is the cathode (negative).
Does this LED require a current-limiting resistor?
Yes. Like all standard through-hole LEDs, it requires an external series current-limiting resistor calculated for your supply voltage to prevent overcurrent damage.
Why buy individual LEDs instead of a bulk multi-pack?
Buying by the piece lets you order the exact count needed for a specific repair or build without paying for excess inventory that sits unused in a drawer. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Shipping is an $8 flat rate across your entire order, turns free once your cart passes $28, and orders ship out from our Idaho warehouse the same or next business day.
It looks like clear glass on the bench until power hits the leads and that piercing blue takes over. Stick it in your panel, set your resistor, and let it do its job.
