IEC 60749-30:2020 pdf download

IEC 60749-30:2020 pdf download

This part of IEC 60749 establishes a standard procedure for determining the preconditioning of non-hermetic surface mount devices (SMDs) prior to reliability testing. The test method defines the preconditioning flow for non-hermetic solid-state SMDs representative of a typical industry multiple solder reflow operation. These SMDs are subjected to the appropriate preconditioning sequence described in this

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IEC 60721-3-4:2019 pdf download

IEC 60721-3-4:2019 pdf download

This part of IEC 60721 classifies groups of environmental parameters and their severities to which products are subjected when installed for stationary use at non-weatherprotected locations. Weatherprotected locations where products can be mounted for stationary use permanently or temporarily are addressed in IEC 60721 -3-3. The environmental conditions specified in this document are limited to

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