Inside diameter: 5.5mm; Pin inside: 2.1mm; Operating temperature range: -40'C~+55'C; Rated Load: DC 30V 0.5A; Contact resistance: <=0.03 ohm; Insulation resistance: >= 100M ohm DC 250V; Withstand voltage: AC 500V (50Hz) / min Insertion force: 3~20N; Life: 5000 times