DO-214AC SMA — rework and board-fit note
Housed in the standard DO-214AC (SMA) surface-mount package, the SMAJ78A-13 is a two-terminal device with the cathode band marking pin 1. The SMA footprint is well-established — the solder pad geometry matches the JEDEC standard, and the package body is large enough that hand rework with a hot-air station is straightforward. No underfill or special stencil is required for typical reflow profiles. The wide margin above 125°C means the device can absorb repeated transients at elevated ambient without derating the peak power prematurely.