3mm Round Top Cool White Slow Flashing 1Hz LED - Strobe Effect (Pack of 10)

About this item

• Self-flashing LED with integrated flash circuit - 10 Cool White self-flashing LEDs with built-in flash circuit that pulse on a fixed cadence — suitable for model railroad signals, security indicators, prop electronics, and panel displays with integrated timing
• Cool white slow flashing output - Emits clear white light at 14,000-15,000 mcd through a clear lens with a 20-30 degree viewing angle. Built-in flash IC drives the LED at Slow Flashing 1Hz (one flash per second) on 3.0-3.4V forward voltage at 20mA drive current.
• Standard radial through-hole package - Discrete 5mm DIP LED with two leads on standard 2.54mm pitch for breadboard, perfboard, or PCB mounting. Clear epoxy lens focuses output into a narrow 20-30 degree beam. Flash IC is integrated inside the LED body, no separate timer chip on the board.
• 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.
• Strobe and indicator applications - Cool white 1Hz flash rate suits strobe effects, beacon markers, attention-getting status indicators, security light simulation, scale-model emergency vehicle roof lights, and novelty props. Cool/clear white output reads as a modern daylight tone rather than a warm incandescent.