Indicator LED Supplier Checklist: From Panel Indicators to PCB Status Lights

Quick answer: indicator sourcing fails when buyers spec a bare LED but need an assembly — decide first whether you need a board-level LED, a panel-mount indicator, or an LED plus holder/light pipe combination, then qualify the supplier accordingly.

Step 1: Define the Level of Assembly

• Bare device: 3mm/5mm through-hole or SMD LED soldered to your PCB.
• Device + holder: LED in a panel-mount holder for clean front-panel mounting.
• Device + light pipe: SMD LED on the board, light pipe carries light to the panel.

Step 2: Fix the Optical Spec

• Color conventions: red = fault/alarm, green = run/OK, amber = warning, blue/white = status.
• Viewing angle matched to how the panel is read: wide diffused for close viewing, narrow clear for distance.
• Brightness appropriate to ambient light — indoor office and outdoor sunlit panels differ 10x.

Step 3: Supplier Questions

• Can you supply LED + holder + light pipe as matched parts?
• Per-die binning for multi-color panels?
• Lead forming for vertical/horizontal panel alignment?

Hongcheng Optoelectronics, a member of Guangyu Group, is a 20+ years LED packaging manufacturer with 40 automated ASM lines and 200KK pcs monthly capacity. Free samples and PDF datasheets are available in our datasheet center; browse the product center or contact us for a bulk quote. Matched accessories: LED holder series for panel mounting.