High-Brightness Indicator LED

Question

Problem: High-Brightness Indicator LED. Solve this hands-on electronics task on EWskills.

Accepted Answer

1. Component Purpose

On an industrial front panel, ambient light from factory lighting, windows, and other displays can make standard LEDs hard to see. A high-brightness LED (≥80mcd) with a wide viewing angle (≥100°) ensures the indicator is clearly visible from any reasonable position.

Red is the standard color for alert, fault, or warning indicators in industrial equipment.

Required: Red · 1206 · SMD · Vf 1.8–2.4V · 20mA · ≥80mcd · ≥100° viewing · −40°C to +85°C · RoHS

2. How to Find It on DigiKey

Go to DigiKey.com → Optoelectronics → LED Indication - Discrete

Apply these filters:

Color → Red
Package / Case → 1206 (3216 Metric)
Millicandela Rating → 80mcd or higher
Viewing Angle → 100° or wider
Mounting Type → Surface Mount
Part Status → Active

Tip: Series resistor for 12V supply: R = (12V − 2V) / 20mA = 500Ω. Nearest standard value is 470Ω (gives ~21mA) or 510Ω (gives ~19.6mA). Both are fine.

3. Key Specifications & What They Mean

Specification	Required	Why
Color	Red	Standard for fault/warning indication.
Package	1206	Visible front-panel LED size.
Forward Voltage	1.8V to 2.4V	Typical red LED range; for resistor calc.
Test Current	20mA	Standard brightness drive level.
Luminous Intensity	≥80mcd	Bright enough for factory lighting.
Viewing Angle	≥100°	Visible from side angles too.
Temp Range	−40°C to +85°C	Indoor industrial range.
RoHS	Yes	Compliance required.

4. Selecting a Safe, Production-Ready Part

The filtered list will show matching parts. Before you pick one, check: Is it Active? Is stock available? Is the manufacturer reputable? Is a datasheet available?

Full checklist: How to Select a Safe, Production-Ready Component — EWskills Guide

5. Filtered DigiKey Link

➡ View Matching Parts — Red, 1206, ≥80mcd, ≥100°, SMD

40. High-Brightness Indicator LED