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10 x LED 3mm Cool White Ultra Bright Water Clear Round Top LEDs Light RC Car
Additional Information
Size3mm Round Top Clear
ColorCool / Clear White
Luminosity/Brightness14,000-15,000 mcd
Forward Voltage3.0-3.4v
Current20mA
WavelengthN/A
Viewing Angle20-30 Degrees
Mount StyleThrough Hole (DIP)
Lens ColorClear
LED Brightness ClassSuper/Ultra/Extreme

Lighthouse LEDs has been providing top quality components for over 20 years and have become the go-to supplier for many industries through Ebay and our personal website, where there is more ordering flexibility and products offered. If you need resistors, wire, heatshrink, switches or LED drivers you can find them at those links. We have, perhaps, the best and widest selection of LEDs out there!
10 x LED 3mm Cool White Ultra Bright Water Clear Round Top LEDs Light RC Car

These 3mm cool white LEDs deliver a striking, crisp daylight-white output that makes them the go-to choice for RC car headlights, HO and N scale locomotive lighting, and any project where a modern, high-intensity white point matters.

Each LED runs at 3.0–3.4V forward voltage and 20mA, producing an impressive 14,000–15,000 mcd of luminosity through a clear water-clear lens with a focused 25° viewing angle. The 3mm round-top form factor fits standard drill clearance holes (use a 3.2mm / ?" bit through polycarbonate body shells) and drops directly into through-hole footprints on perfboard and PCBs.

Common applications

  • RC cars and trucks: Drill through polycarbonate body shells for headlights — cool white is the natural match for modern HID-style headlight builds. Yeah Racing and similar LED lighting kits use exactly this size and color.
  • HO scale model railroads: Retrofit Atlas, Walthers, and Athearn locomotive headlights away from grain-of-wheat incandescents. Cool white matches the color temperature of modern prototype headlights.
  • N scale (1:160): Locomotive ditchlights, crossing flashers, and building accent lighting — Evans Designs pre-wired kits use 3mm as the standard size.
  • Slot cars (1:32): Carrera Evolution and Digital headlight kits, Scalextric body lighting — two whites in series on a 12V track supply with a 470O resistor is the standard wiring approach.
  • Warhammer 40K terrain and vehicles: Searchlight effects on Land Raiders and Thunderhawks, cockpit illumination, and white OSL on large-scale centrepiece models.
  • Vintage equipment repair: Panel indicators on 1980s–2000s Tektronix and HP bench instruments, Kenwood/Yaesu/ICOM radio TX/RX indicators, and PLC control board replacements.

Wiring & power notes

DC power recommended: LEDs are designed for DC. Running on AC will cause flickering and reduce lifespan. If using a low-voltage AC source (model railroad transformer, DCC track voltage), convert it to DC with a MB1S bridge rectifier plus a 100µF 50V electrolytic capacitor for clean, ripple-free output.

Resistor quick reference — 3V LEDs (blue, green, white, UV) at 20mA:

Supply VoltageResistorPower Rating
4V56O1/4W
5V100O1/4W
6V150O1/4W
7V200O1/4W
8V270O1/4W
9V300O1/4W
10V360O1/4W
11V430O1/4W
12V470O1/4W
13V510O1/4W
14V560O1/2W
15V620O1/2W

Prefer not to calculate resistor values? Our 20mA LED Current Limiter eliminates the math entirely. Active constant-current drive to 20mA across a 4–45V DC supply — ideal for automotive circuits where voltage fluctuates. Multiple LEDs in series share one driver.

Building with this item

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Quality LEDs made in the USA since 2005.



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