Buy 3mm Dome Diffused Orange LED Lamp Online - Stock & Specs at Communica

Overview: What "3mm Dome Diffused Orange LED Lamp" Means

A 3mm dome diffused orange LED lamp refers to an LED packaged in a 3 millimetre diameter epoxy lens with a rounded (dome) shape and a diffused finish. Diffusion softens the point-source appearance, producing a wider viewing angle and a more uniform colour spread - useful for indicators and aesthetics. Orange typically refers to dominant wavelength or a descriptive colour (approx. 590-610 nm), though exact chromaticity varies by manufacturer.

Common Specs to Check

• Forward voltage (Vf): usually 1.8-2.2V for orange LEDs.
• Recommended forward current (If): standard 20 mA for through-hole 3mm LED lamps; check if available in higher-efficiency 5-10 mA variants.
• Luminous intensity: expressed in mcd (millicandela); higher values mean brighter appearance at a given current.
• Viewing angle: diffused dome typically 60 degrees-180 degrees depending on the internal lens and diffuser.
• Lead spacing and polarity: confirm anode/cathode and lead length if mounting in PCB or panel.

Compatibility & Use Cases

• Panel indicators: diffused lens hides the point-source and reads well at angles.
• Prototyping on breadboards or PCBs: 3mm form factor fits standard 3mm holes and sockets.
• Education labs: low current options are safer for student projects and battery-powered kits.

Selecting and Sizing: Resistor Calculations and Examples

Most LED circuits require a current-limiting resistor when driven from a fixed DC source. Use Ohm's law to calculate resistor value:

R (ohms) = (Vsource - Vf) / If

Example: 5V Supply, 20 mA LED

For a 5V source and a 3mm orange LED with Vf = 2.0 V and desired If = 20 mA (0.02 A):

R = (5.0 - 2.0) / 0.02 = 150 ohms. Choose a standard 150 ohm resistor rated 1/4 W or higher.

Lower Current Option (Longer Life)

Running at 10 mA reduces brightness but extends life and reduces power draw. For If = 10 mA: R = (5.0 - 2.0) / 0.01 = 300 ohms.

Ordering, Accessories & Local Buying Tips

• Check Communica's product categories for LEDs and semiconductors to compare part options and datasheets.
• Buy matching resistors, holders, and panel mounts in the same order to simplify assembly.
• For classroom packs, request quantity availability and ask for VAT invoices for institutional purchases; prices are typically shown in ZAR on the product pages (quotes may be required for bulk orders).
• Use branch pickup: Check Stock in Samrand or other branches to save on courier costs and collect during trading hours.

Accessory Bundles to Consider

• LED assortments (various colours) for teaching basic electronics.
• Pre-cut resistors (150, 220, 330 ohm) and resistor kits.
• Breadboards, jumper wires, and solderless PCB adaptors for quick testing.

Availability, Pricing & Local Examples

Stock levels for a specific 3mm dome diffused orange LED lamp can vary by brand and reel/package. For small-maker quantities (10-50 pcs), expect unit prices in the low ZAR range; for classroom or production batches (100s to 1k), request a quote to confirm lead times and volume pricing. These figures are indicative; check the product page for exact ZAR pricing and availability.

How to Buy

• Shop Now: add the LED lamp and accessories to your basket and choose delivery or branch pickup.
• Check Stock in Samrand: view real-time availability for fastest local collection.
• Request a Quote: for bulk classroom or procurement orders, request formal pricing and VAT invoices.

Sources

• Communica - All Products Collection
• Communica - Branches & Trading Hours
• Light-emitting diode - Wikipedia