Zhaga Book 10 defines a family of circular LED modules that have a small circular light-emitting surface (LES). Book 10 LED modules can be used with luminaire optics such as lenses and reflectors and are typically used in spot-lighting applications.

Book 10 contains simplified and harmonized specifications for the LED modules that were previously described in older Zhaga specifications:

• Book 3 (50-mm diameter LED modules)
• Book 11 (35-mm diameter LED modules)

Book 10 modules can be standalone LED modules, or they can be constructed by combining a COB LED array (defined in Book 12) with an array holder.

D50 Book 10 LED module (formerly Book 3). Separate driver not shown.