IEC 60747-5-13 pdf – Semiconductor devices – Part 5-13: Optoelectronic devices – Hydrogen sulphide corrosion test for LED packages 1Scope This part of lEC 60747 provides the accelerated test method to assess effects of the tarnishing of silver and silver alloys used for LED packages due to hydrogen sulphide. Particularlty，thistest method is intended to give information on silver and silver...