The CSL11 series are 0603-size reflector type white LEDs that deliver high luminosity, contributing to significantly improved set design and visibility. In terms of design, the transmittance of the cover material is typically reduced to black-out the display when the LEDs are not lit, but this makes low-brightness LEDs harder to see. In contrast, the CSL11 enables clear display even with blackout specifications, and the small reflector prevents light leakage during high-density mounting.