Product Overview

This package contains 10 pieces of 3mm Tower LED Indicator Lamps featuring a distinctive 10mm-high cylindrical lens design. Available in Red, Green, Blue and Yellow, these through-hole LEDs are ideal for equipment repairs, custom control panels, restoration projects, status indicators and general-purpose electronics applications.

The extended tower-style lens provides a unique appearance compared to traditional dome LEDs while providing enhanced visibility for indicator applications. Long leads allow for easy installation in printed circuit boards, prototyping projects and equipment maintenance applications.

Features

Pack of 10 LEDs
3mm (T-1) through-hole package
10mm cylindrical tower lens design
Available in Red, Green, Blue and Yellow
Long leads for easy installation
Suitable for PCB mounting and prototyping
Suitable for low-voltage electronic circuits
Ideal for indicator and status lamp applications

Applications

Control panels
Status indicators
Equipment repairs
Audio equipment restoration
Test equipment
Industrial electronics
DIY electronics projects
Educational projects
Prototyping applications

Specifications

Package Quantity	10 Pieces
LED Type	Through-Hole LED
Package Size	3mm (T-1)
Lens Style	Cylindrical Tower
Lens Height	10mm
Lens Diameter	3mm
Mounting Type	Through-Hole
Lead Configuration	2 Lead
Polarity	Anode / Cathode
Available Colours	Red, Green, Blue, Yellow
Lens Finish	Tinted Diffused
Viewing Direction	Axial

Typical Electrical Characteristics

LED Colour	Forward Voltage	Recommended Forward Current
Red (RF0993-03)	2.0V - 2.2V	18mA
Yellow (YF0993-03)	2.0V - 2.2V	18mA
Green (GF0993-03)	2.0V - 2.2V	18mA
Blue (BF0993-03)	2.9V - 3.2V	18mA

LED Resistor Calculator Reference Table

Each light emitting diode (LED) has an optimal operating current and a maximum current rating that it can safely handle. Going beyond that maximum current, even briefly, may damage the LED internally without any visible signs. The damage can include reduced intensity, inconsistent power requirements, heating, or shortened useful life. Thus, limiting the current through the LED with the use of a series resistor is a necessary and straightforward practice.

Resistor values are based on typical LED forward voltages and standard indicator-light operating currents.

Typical LED Forward Voltages: Red 2.0 - 2.2V, Yellow 2.0 - 2.2V, Green 2.0 - 2.2V, Blue 2.9 - 3.2V.

LED Dropping Resistor Selection Guide
LED Model	3.3V	5V	9V	12V	14V
BF0993-03 Blue Frosted	15 Ω 1/4 watt	110 Ω 1/4 watt	330 Ω 1/4 watt	510 Ω 1/2 watt	620 Ω 1/2 watt
RF0993-03 Red Frosted	75 Ω 1/4 watt	180 Ω 1/4 watt	390 Ω 1/4 watt	560 Ω 1/2 watt	750 Ω 1/2 watt
YF0993-03 Yellow Frosted	75 Ω 1/4 watt	180 Ω 1/4 watt	390 Ω 1/4 watt	560 Ω 1/2 watt	750 Ω 1/2 watt
GF0993-03 Green Frosted	75 Ω 1/4 watt	180 Ω 1/4 watt	390 Ω 1/4 watt	560 Ω 1/2 watt	750 Ω 1/2 watt
If you need to determine the dropping resistor value for multiple LEDs in Series or maybe at a different operating voltage, visit our online Series Dropping Resistor Calculator.