1.8mm / 2mm Round Top UV / Purple LED - Miniature Blacklight (Pack of 100)

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• Compact 1.8mm/2mm LED for miniature displays - 100 UV Purple 1.8mm/2mm tower LEDs — the smallest standard LED form factor — fit miniature displays, dollhouse lighting, model railroad scale buildings, and tight spaces
• Near-UV violet emission at 395-405nm wavelength - 1.8mm tower-style through-hole LED delivers 1,000-1,500 mcd output with a 20-30 degree narrow viewing angle through a clear (water-clear) lens. Forward voltage 3.0-3.4V at 20mA drive current. Wavelength sits at the violet edge of the visible spectrum; produces a saturated purple/violet glow with a faint pinkish hue rather than true blacklight UV, so it will not reliably activate fluorescent paints or inks.
• 1.8mm cylindrical tower package - Compact through-hole (DIP) body measures just 1.8mm in diameter, the smallest standard leaded LED footprint, fitting into spaces where 3mm or 5mm bulbs will not clear. Two long radial leads on standard 2.54mm pitch drop into perfboard, breadboard, or custom PCB layouts. Tower lens profile concentrates output into a tight forward beam.
• Polarity and resistor reference - Through-hole LEDs are polarity-sensitive: longer lead is anode (+), shorter lead is cathode (−). For 20mA drive current with a 3.0-3.4V LED, use a series resistor of 100Ω 1/4W on 5V, 300Ω 1/4W on 9V, 470Ω 1/4W on 12V, or 620Ω 1/2W on 15V.
• Applications for violet micro-lighting - 1.8mm diameter suits miniature scene work where larger emitters do not fit: dollhouse accent fixtures, dioramas, theatrical micro-effects, costume and prop detail, scale-model instrument glow, wearable electronics, and tight-space indicators on hobby PCBs. Violet output reads as an accent color rather than a blacklight source.