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Zhaga Releases Book 12 on COB LED Arrays

  • Author:emmachang
  • Source:LED INSIDE
  • Release on :2016-03-26
The Zhaga Consortium, a global association of lighting companies that is standardizing LED lightingcomponents, has published its eagerly-awaited specification on chip-on-board (COB) LED arrays. 
Book 12 defines a family of six rectangular and square LED modules with a circular light-emitting surface (LES). These modules require a separate LED driver, and can be used either with or without holders, depending on the luminaire type and application. Most Book 12 modules will use COB technology for the light-emitting section. 

By defining a small family of COB form-factors, Book 12 removes arbitrary variations in non-competitive properties such as outer dimensions and electrode positions. This reduces the complexity of luminaire development, and simplifies the supply chain for luminaire manufacturers. For COB makers, standardization of non-competitive properties allows them to focus on areas where they can add value, such as efficacy or lifetime (which are not included in the Zhaga specification).
Book 12 defines a family of modules with the following PCB dimensions: 

• Rectangular 12 x 15 mm (category C12x15)
• Rectangular 16 x 19 mm (C16x19)
• Square 19 x 19 mm (C19x19)
• Rectangular 20 x 24 mm (C20x24)
• Square 24 x 24 mm (C24x24)
• Square 28 x 28 mm (C28x28) 

Three test labs – DEKRA, Intertek and VDE – are authorized to perform testing procedures that will enable manufacturers to certify their COB products according to Zhaga Book 12. All certified products are listed in Zhaga’s online database.