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10 x LED 1.8mm 2mm UV / Purple Ultra Super Bright LEDs Light Clear Train Model
Additional Information
Size1.8mm / 2mm Round Top Clear
ColorUV / Purple
Luminosity/Brightness1,000-1,500 mcd
Forward Voltage3.0-3.4v
Current20mA
Wavelength395-405nm
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 1.8mm 2mm UV / Purple Ultra Super Bright LEDs Light Clear Train Model

These 1.8mm UV/Purple LEDs are purpose-built for applications where a tight, narrow beam of 400nm ultraviolet-purple light is needed in a compact package — from blacklight effects in model dioramas to instrument cluster accent lighting.

Each LED operates at a forward voltage of 3.0–3.4V at 20mA, emitting at 400nm wavelength with a narrow 25° viewing angle and a luminosity of 1,000–1,500 mcd through a clear lens. At just 1.8mm in diameter, these fit tight spaces that standard 3mm or 5mm LEDs simply cannot reach.

Common applications

  • HO and N scale model railroad blacklight effects — fluorescent building signs, station platform lighting, and yard scene accents
  • 1:24 and 1:18 diecast and resin diorama UV scene lighting
  • RC car and truck cabin accent lighting, dashboard glow effects in 1:10 scale builds
  • Pinball machine UV accent replacement — fits existing board positions designed for 1.8mm bulbs
  • Fluorescent mineral display cases and small UV inspection rigs
  • Custom automotive instrument cluster backlight accents and gauge face illumination where purple/UV tone is desired

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
4V56Ω1/4W
5V100Ω1/4W
6V150Ω1/4W
7V200Ω1/4W
8V270Ω1/4W
9V300Ω1/4W
10V360Ω1/4W
11V430Ω1/4W
12V470Ω1/4W
13V510Ω1/4W
14V560Ω1/2W
15V620Ω1/2W

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 LED

Need supporting components? We carry a few staples that pair directly with this LED:

  • Thin lead-extension wire: 30 AWG Kynar wire — solid core, Teflon jacket, perfect for extending LED leads in tight spaces.
  • Hookup wire for power runs: 26 AWG Kynar wire — thicker conductor for supply rails and longer runs without voltage drop.
  • Bare tinned bus bar: 24 AWG tinned copper — solid core bare wire for bus-bar power distribution on perfboard builds and LED arrays.
  • DIY timer / blinker circuit: NE555 Timer IC — the classic 8-pin DIP chip for building LED blinker, PWM dimmer, and tone-generator circuits without needing a microcontroller.

Quality LEDs made in the USA since 2005.

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