1N4001 DiodeShipped in a strong cardboard envelope. First Class USPS Shipping. SpecificationsStandard Recovery Power RectifierRepetitive Reverse Voltage Max, Vrrm: 50VForward Current Avg Rectified, IF(AV): 1AForward Surge Current Max, Ifsm: 30AForward Voltage Max, VF: 1.1VCurrent Rating: 1A