Transcription of IPC-TM-650 Originating Task Group TEST …
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IPC-TM-650 Originating Task Group TEST …
1 ScopeThis method is to determine the physical endur-ance of printed boards to sudden changes of temperature. Itis designed to expose specimens to a series of high and lowtemperature excursions to cause physical Applicable DocumentsIPC-2221 Generic Standard on Printed Board Design3 Test SpecimenCoupon D from IPC-2221 or other suit-able test coupon (see ).4 automatically controlled dual temperature environ-mental test chamber or other dual chamber apparatuscapable of maintaining 65, 55, 40 or 0 C+0 5 C[ 85, 67, 40, +32 F+0 9 F]inthelowtemperature chamberand 70, 85, 105, 125, 150 or 170 +5 0 C [158, 185, 221,257, 302 or 338 +9 0 F] in the high temperature :The temperature extremes (high and low) that arerequired is dependent on the base material of the specimenthat is to be tested (see and the temperatures listed inTable 2).
shall be such that the ambient temperature shall reach the specified temperature within twp minutes after the test speci-men has been transferred to the appropriate chamber.
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