What it is
The 430450212: Rated 8 A per circuit at 600 V. The current rating is per contact, and the dual-row layout gives two parallel paths for power return or distribution. Contacts are tin-plated on both the mating face and the solder post, at 100 µin (2.54 µm) thickness on the mating surface. This is the full tin grade for the series — the 2-position member does not carry a gold-flash option. At 100 µin the tin is thick enough for multiple mating cycles in industrial environments, though connectors with gold-over-nickel in the same series will outlast it on high-cycle applications.
What the key ratings mean
Locking ramp and 4-wall shroud: the shroud wraps all four sides of the contact array — it keeps the mating receptacle fully covered against side load and vibration, which is the practical reason this series is specified into automotive and industrial harnesses rather than a plain unshrouded header. The locking ramp on the header body gives an audible positive mate confirmation with the matching receptacle latch. Board guide feature: moulded alignment towers at each end of the header body guide the receptacle onto the pins during assembly, reducing bent-pin risk on production lines where connectors are mated by automated or semi-automated heads. Kinked pin, through-hole solder: the kinked shoulder seats the pin in the PCB hole before solder reflow, reducing tombstoning risk on fine-pitch dual-row parts. The 0.125-inch (3.18 mm) post length is standard for single-side reflow or hand-solder board assembly. UL94 V-0 LCP housing: the liquid crystal polymer body meets the flammability rating required for most industrial and automotive panel or enclosure interiors. The 9.91 mm insulation height sits above the board for a board-to-cable header that clears typical reflow profiles.
Where this class is used
Micro-Fit 3.0 headers are used as board-to-cable power interconnects in automotive harnesses, industrial automation enclosures, and medical device interiors. The 600 V rating and 8 A per circuit give headroom for motor drive auxiliary rails, while the dual-row layout keeps the connector compact enough for confined panel spaces.