The T821140A1R100CEU is a 40-way 2-row 2.54mm right angle Box Header without latch. This T821 series wire-to-board connector has gold-plated phosphor bronze contacts, black housing and a glass-reinforced thermoplastic insulator.
20mR at 1ADC Maximum contact resistance
1000MR at 500VDC Minimum insulation resistance
1000VAC at 60Hz for one minute Dielectric withstanding voltage