What is the difference between SMD and COB UV LEDs?

2025/03/30
  • Apollux Optoelectronics Technology LTD

Surface Mount Device (SMD) LEDs are commonly available, square packages of LED chips available in compact form factors ranging from 3x3mm to 6x6mm. SMD UV LEDs need to be mounted to PCBs or MCPCBs to be powered on. A more recent development in LED packaging is the Chip-On-Board (COB) LED, which consist of LED chips directly mounted onto the PCB or MCPCB for improved heat dissipation. COBs do not require additional MCPCBs and can offer high density, flexible arrangements of LED die.

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