TE Connectivity’s Buchanan series products are popular and well known terminal blocks We sometimes get questions concerning markings for the products, such as for the 282844 series within Buchanan. Does TE make these markings known?
Per their document: Application Specification for AMPMODU 2mm Header Platform, there are specific product codes for these devices. These codes include 7742, 7743, and 7744, all of which are considered valid markings for these products.