The DF12NB-30DS-0.5V(51) from Hirose is surface mount mezzanine connector receptacle with 30 positions, 2 rows, 0.5mm pitch and solder retention. Stacking height 3.5 to 5mm. This connector has black polyamide insulator, gold plated phosphor copper contacts and tin plated brass solder tab. Operating temperature range is from -55°C to 125°C.