20-position DIP header, 2.54 mm pitch
The 1825094-6 is the 20-position member of TE's Diplomate DL DIP header line, arranged as 2 x 10 on a 0.3" (7.62mm) row spacing.
The 1825094-6 is listed as Obsolete by TE Connectivity AMP Connectors. The base product number is 1825094.
