What LED beads are used for industrial control board LED indicator lights? Selection scheme for LED indicator lights on industrial control boards

The LED indicator lights on the industrial control board (PLC motherboard, IO board, communication board) are responsible for power indication, signal status, fault alarm and other functions. Onboard LED chips require small size, low power consumption, and good consistency, and surface mount packaging is the mainstream choice. Hongcheng Optoelectronics provides a full range of onboard indicator LED solutions for industrial control board manufacturers.

Key points for selecting LED indicator lights for industrial control boards

• Package recommendation: 0603 and 0805 SMD LED chips are the mainstream of industrial control boards. If space is tight, choose 0402. If lateral light output is required, choose the side emitting SMD.
• Working voltage: onboard 3.3V/5V system, red yellow VF ≈ 2V, blue-green white VF ≈ 3V, pay attention to matching current limiting resistors.
• Low power consumption: Battery powered or low-power motherboard, choose 2mA low current high brightness model.
• Consistency: Multiple status lights on the same board should be sorted in the same batch to avoid brightness color differences.
• Dual color application: Single light position displays two states of operation/fault, select 0805 dual color surface mount light bead.

Hongcheng Optoelectronics recommends products

• 0603 SMD LED beads
• 0805 dual color patch LED beads
• 0805 SMD LED beads
• 1206 SMD LED beads
• 3mm bordered white misty dual color direct insertion LED beads
• 5mm Bordered White Misty Double Color Direct Insertion LED Bead
• 5mm white transparent dual color direct insertion LED beads with edges
• 4020 side emitting LED beads
• 0802 side emitting patch LED beads
• 0602 side emitting patch LED beads

Frequently Asked Questions

Q: How to choose and package the SMD LED chips on the industrial control board?
Answer: For regular display, choose 0603/0805. For limited space, choose 0402. For side display, choose the side illuminated series. see detailsSelection of circuit board status indicator lights.

Extended Reading

• What type of LED beads are used for the status indicator lights on the circuit board?
• Difference between SMD indicator beads and direct insertion beads
• Recommended models of low-power LED indicator lights

Hongcheng Optoelectronics has been focusing on LED indicator beads for more than 20 years, with A-level chips, 99.99% gold wire packaging, RoHS environmental certification, and support for free samples and customized selection. For procurement inquiries, please contactsales@led-hc.com.