Hirose Electric DF3A-9P-2DS

Row Number is a parameter used to identify the position of a component in a row of a component array. It is typically used in conjunction with Column Number to uniquely identify a component within an array. Row Number is often used in printed circuit board (PCB) design to specify the location of components on the board. It can also be used in other applications, such as in the design of integrated circuits (ICs) and other electronic devices.

Number of Positions, in the context of electronic components, refers to the number of distinct terminals or connection points available on the component. It indicates the number of individual electrical connections that can be made to the component. A higher number of positions typically allows for more complex functionality and versatility in circuit design.

Series, in the context of electronic components, refers to the arrangement of components in a circuit. When components are connected in series, they form a single path for current to flow through. The total resistance of a series circuit is the sum of the individual resistances of each component. Series connections are often used to control the flow of current in a circuit, as the total resistance can be adjusted by changing the number or type of components in the series.