How to Choose LED Indicators for PLC Control Panels | Selection Guide
Status indicators on PLCs and automation control cabinets are the first entry point for production-line diagnostics: power, run, communication, and fault states at a glance. Industrial sites bring dust, oil, and electromagnetic interference, so the LEDs must be industrial-grade. HC-LED supplies a full range of indicator LEDs for automation manufacturers.
Key Selection Points for PLC Panel Indicators
- Industrial-grade quality: A-grade chips, gold-wire bonding, HBM ESD resistance of at least 2000V for harsh industrial sites.
- Package: 0603/0805 SMD LEDs for dense rows of IO status lights; 5mm through-hole LEDs for panel lamps.
- Color code: Green = running, red = fault, yellow = warning/forcing. Bi-color LEDs save positions.
- Communication indication: TX/RX lamps blink quickly without ghosting; choose fast-response standard models.
- Batch supply: Full-BOM kitting supported; same-BIN binning keeps the whole cabinet visually consistent.
Recommended HC-LED Products
- 0603 SMD LED
- 0805 SMD LED
- 0805 Bi-color SMD LED
- 5mm Green Clear Through-Hole LED
- 5mm Yellow Clear Through-Hole LED
- 5mm Orange Clear Through-Hole LED
- 3mm Green Clear Through-Hole LED
- 3mm Blue Clear Through-Hole LED
- 3mm Bi-color Milky Through-Hole LED
- 5mm Bi-color Milky Through-Hole LED
- 5mm Bi-color Clear Through-Hole LED
FAQ
Q: What package suits the dense IO indicator rows on a PLC?
A: 0603/0805 SMD LEDs in high-density layouts, with same-BIN binning so the entire row stays uniform in brightness.
HC-LED (Hongcheng Optoelectronics) has specialized in indicator LEDs for over 20 years: A-grade chips, 99.99% gold-wire bonding, RoHS compliance, free samples, and custom selection support. Contact us at sales@led-hc.com.
