why pop package is challenging

Reworking POP Packages

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Overview of POP ReworkReview of Package Configurations

Challenges in POP Rework• Difficulty in inspection

• Shields

• Neighboring components

• Underfill

• Package warpage

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Overview of POP Rework-continued

Different POP Rework Methods• Stack, reflow and place

• Place, place and reflow

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POP Configurations

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POP Rework Challenges-Inspection

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POP Rework Challenges-Inspection

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X-Ray Imaging

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Single Piece Shield

Two Piece Shield

POP Rework Challenges- Shields

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Single Piece RF Shield Rework“Cold” scoring process-The Patch

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Single Piece RF Shield ReworkPortion over top of device to be reworked is removed. No shield removal required. Patent Pending Process.

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Single Piece RF Shield ReworkRF Shield Re-Applied. No RF shield reflow required. Fast process. Increased yields.

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Conductive RF Shield Rework

Photos Courtesy of OK International

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Measuring Warpage

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POP Rework Challenges-Underfill

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POP Rework Challenges-Close In Components

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POP Rework Challenges-Close In Components

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsFirst Make the Stack, then Place the Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Rework MethodsPlace First Layer, then Next and Reflow Entire Stack

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POP Reworkwww.solder.netinfo@solder.net