What LED chips are used for circuit board status lights? Selection scheme for circuit board status lights

Almost every circuit board requires status indicator lights: power indicator, running heartbeat, and fault alarm. The core of selecting onboard LED chips is to choose the appropriate packaging based on the board space, voltage platform, and assembly process. Hongcheng Optoelectronics' onboard indicator LED covers the 0402 to 5mm fully packaged series.

Key points for selecting circuit board status lights

• Packaging by space: Choose 0805/1206 for ample space, 0603/0402 for compact models, and direct insertion for panel holes.
• Voltage matching: 3.3V system with red and yellow light direct series resistors, blue-green and white VF ≈ 3V, pay attention to the margin.
• Lateral light emission: The light is located on the edge of the board and the side emitting patch is selected, and the light is emitted from the structural gap.
• Dual color space saving: Select 0603/0805 dual color patch for single light position and dual state.
• Process adaptation: Reflow soldering selects surface mount, wave soldering player inserts, pay attention to temperature resistance curve.

Hongcheng Optoelectronics recommends products

• 0603 SMD LED beads
• 0805 dual color patch LED beads
• 0805 SMD LED beads
• 1206 SMD LED beads
• 4020 side emitting LED beads
• 0802 side emitting patch LED beads
• 0602 side emitting patch 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

Frequently Asked Questions

Q: Should we choose surface mount or direct insertion for the onboard status light?
Answer: SMT technology prioritizes surface mount (0603/0805), and requires direct insertion through the panel or hand soldering for repair. see detailsDifference between SMT and direct insertion.

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.