Dynamic 1200 Series Headers The TE Connectivity Dynamic Range D-1200 Series Headers have a Tin plated Retention Leg for increased stability. The PCB solder tails of the D-1200 Series Headers are Tin plated and the contact Tabs are Gold plated. The recommended PCB thickness for these D-1200 Series Headers is 1.0 to 1.6 mm. The design of the D-1200 Series header helps prevent contacts bending during mating.