JIS C 60695-1-2:1993

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Fire hazard testing of electronic components is influenced by the following: Electronic components are made of heterogeneous materials in relatively small amounts arranged in such a complex construction that synergistic effects may be various and are generally unforeseeable. Functioning of electronic components implies a supply of electrical energy; in normal operation heat dissipation is generally small but sparks may be produced (e.g. by relays). However, when operated under faulty or abnormal conditions, a large amount of energy may be liberated as heat. Electronic components of various kinds are generally associated into equipments in quite a large number and for various purposes, so that each type of component has to perform in a wide range of situations and a typical situation can therefore not be defined. Only in exceptional cases where some components may be particularly dangerous or endangered with regard to fire hazard a study of the actual situation may be useful and specified requirements may be necessary.