Na mgbakwunye na nhazi ọkwa mgbawa, A na-enyekwa ọkụ ọkụ na-agbawa agbawa nke LED maka ike mgbochi corrosion ha. Nhazi mgbawa na-adaba n'ụdị abụọ: IIB na IIC. Ọtụtụ ọkụ ọkụ LED na-ezute ụkpụrụ IIC siri ike karị.
Banyere mgbochi corrosion, A na-ekewa ọkwa ndị ahụ n'ime ọkwa abụọ maka gburugburu ime ụlọ yana ọkwa atọ maka ntọala n'èzí. Ọkwa mgbochi corrosion ime ụlọ gụnyere F1 maka oke na F2 maka oke nguzogide. Maka ọnọdụ dị n'èzí, nhazi ọkwa bụ W maka nguzogide corrosion ọkụ, WF1 maka agafeghị oke, na WF2 maka oke nguzogide corrosion.
Nkewa a zuru ezu na-eme ka a mata na a na-ahazi ihe ọkụ ọkụ na ọnọdụ gburugburu ebe obibi, na-akwalite ma nchekwa na ogologo ndụ.