The T816120A1S101CEU is a 20-way 2-row 2.54mm straight through-hole Header with short latch. This T816 series wire-to-board connector has gold flash over 50µinch nickel plated brass contacts, black housing and a glass-reinforced PBT insulator. 

20mR at 1ADC Maximum contact resistance 

1000MR at 500VDC Minimum insulation resistance 

500VAC at 60Hz for one minute Dielectric withstanding voltage 

3A Current rating per contact 

250VAC at 60Hz Voltage rating