Product Overview
Cree Screen Master 4mm Oval Blue LED - 470nm Through Hole, 10-Pack Ammo Strip
Condition
10-pack unused NOS, pulled from original ammo-pack carrier strips. Leads show light tarnish patina from age and the carrier tape has hardened, but the epoxy lenses are clear and undamaged throughout. LEDs are functional - tested and confirmed working, as shown in the product photos. Sourced from an electronics distributor consolidating inventory. Photos show the specific units you will receive.
Ships same business day from Idaho. Packed with ESD-appropriate protection.
Backed by our guarantee. Serving customers since 1999.
Product Overview
Cree C4SMA-BGF Screen Master 4mm oval blue LED, through-hole mount. Produces a bright oval beam at 470nm dominant wavelength, designed for high-visibility outdoor display applications including electronic signs, digital billboards, and variable message signs. Advanced optical-grade epoxy construction provides high-temperature and moisture resistance. RoHS compliant, lead-free.
Key Features
- Color: Blue, 470nm dominant wavelength (range 465-475nm)
- Lens: Oval with domed top, 3.90mm x 3.00mm
- Mounting: Through-hole, standard lead spacing
- Forward voltage: 3.2V typical at 20mA test current
- Recommended operating current: 10-30mA
- Optical-grade epoxy - high-temperature and moisture resistant
- RoHS compliant, lead-free
- Luminous intensity: 390-1415 mcd depending on bin - verify full part number suffix for exact bin
Applications
- Electronic signs and signals (ESS), variable message signs (VMS)
- Full-color video screens and digital billboards
- Outdoor indicators and motorway/petrol signage
- Panel indicators, status lights, and prototype breadboard builds
- Maker projects: costume lighting, model displays, custom indicator panels, and any build where a bright oval blue point source fits the design
Frequently Asked Questions
Are these tested and working?
Yes. Confirmed functional. The product photos show an LED illuminated on a breadboard with clear bright cyan-blue output and straight, undamaged leads.
What is the condition of the leads?
Light tarnish patina from age. Not corrosion - surface oxidation only. The leads solder normally and both the epoxy lenses and lead structure are intact throughout the pack.
What voltage and current do these require?
3.2V forward voltage typical, 20mA test current. Recommended operating range is 10-30mA for long-term performance. Use a current-limiting resistor sized for your supply voltage.
Is a datasheet or documentation included?
Not included. This is a through-hole LED - basic forward voltage and current specs are all you need to drop it into a circuit.
What is the exact luminous intensity?
Depends on the bin suffix of the specific units. The C4SMA-BGF range spans 390-1415 mcd across kit numbers. Not confirmed for this exact lot - verify against the full part number suffix if your application requires a specific bin.
These spent years in an ammo strip waiting for someone to put them to work. The leads have a little age on them, the lenses are clear, and the light still comes out strong and blue. Wherever they end up next, they are ready.
