Fellow TechNetters:

   Perhaps the third time is the charm:

   Is there any data out there regarding the integrity of a Thermal Header Solder Attachment/Bottom Termination Component solder joint integrity over time.   Most BTC that I have x-rayed exhibit some degree of voiding.   Can the solder joint voiding degrade the solder connection to a point that it would result in a shorted device internally due to heat build.   Is a solder joint a considered a Thermal Insulator?

Victor,

From: Hernandez, Victor G
Sent: Monday, January 16, 2017 3:15 PM
To: TechNet E-Mail Forum <[log in to unmask]>
Cc: Hernandez, Victor G <[log in to unmask]>
Subject: FW: IPC Standard, Thermal Header Solder Attachment Devices, or Bottom Termination Components

Fellow TechNetters:

   My original post last week did not generate any feedback.   Therefore, I post again in hope of reaching more audience the beginning of the week.   The holidays are over with and the serious work begins.

Victor,

From: Hernandez, Victor G
Sent: Thursday, January 12, 2017 7:46 AM
To: 'TechNet E-Mail Forum' <[log in to unmask]<mailto:[log in to unmask]>>
Cc: Hernandez, Victor G <[log in to unmask]<mailto:[log in to unmask]>>
Subject: IPC Standard, Thermal Header Attachment Devices, THAD

Fellow TechNetters:

    Is there any data out there regarding the integrity of a Thermal Header Solder Attachment/Bottom Termination Component solder joint integrity over time.   Most BTC that I have x-rayed exhibit some degree of voiding.   Can the solder joint voiding degrade the solder connector to a point that it would result in a shorted device internally.   Is a solder joint a Thermal Insulator?

Victor,