Component
1.1 Description
The LUXEON Z emitter is an ultra-compact, surface mount, high-power direct color or white LED. Each LUXEON Z
emitter consists of a high brightness InGaN or AlInGaP LED chip on a ceramic substrate. The ceramic substrate provides
mechanical support and provides a thermal path from the LED chip to the bottom of the emitter. An interconnect layer
electrically connects the LED chip to cathode and anode pads of equal size on the bottom of the ceramic substrate. The
cathode of the LUXEON Z emitter is marked with a small notch in the center of the electrode (see Figure 1).
The top of the LUXEON Z is covered with a thin layer of silicone to shield the chip from the environment. The bottom of the
LUXEON Z emitter contains two equally sized metallization pads for the anode and cathode.
All InGaN LUXEON Z emitters contain a transient voltage suppressor (TVS) chip which protects the LED chip against
electrostatic discharge (ESD) events. The TVS chip creates some minor topographical variations across the top surface of
the InGaN LUXEON Z emitters; all AlInGaP LUXEON Z emitters have a flat top surface.
The LUXEON Z emitter comes in four different form-factors, depending on the targeted color (see Table 1 and Figure 2):
Table 1. Summary of various LUXEON Z colors, chip technology, phosphor and nominal height of the light emitting area
