Internal shield cages for EMI/RFI protection are offered with a choice of solder tails – straight or kinked tails for through-hole boards and gullwing for surface mount boards. 3M offers three tail length options: 2.79mm, 3.18mm and 3.56mm. In this example, we see the 36-position miniSAS Internal Right Angle Metal Shell with straight solder tails designed for a through-hole circuit board.