Harwin Inc. G125-MC21205L4-0450L

Mounting Type refers to the method by which an electronic component is attached to a printed circuit board (PCB) or other surface. Common mounting types include: * Through-hole: Component leads are inserted into holes in the PCB and soldered on the other side. * Surface-mount: Component is placed on the surface of the PCB and soldered in place. * Press-fit: Component is pressed into place on the PCB without soldering. * Socket: Component is inserted into a socket on the PCB, allowing for easy replacement. The mounting type is determined by factors such as the component's size, shape, and power requirements.

Number of Pins: Indicates the number of electrical connections available on the component. These pins are used to connect the component to other components or circuits on a printed circuit board (PCB). The number of pins determines the functionality and connectivity options of the component. It is important to ensure that the component has the correct number of pins for the intended application.

Moisture Sensitivity Level (MSL) is a measure of the susceptibility of a surface mount electronic component to moisture-induced damage during soldering. It is classified into six levels, from 1 (least sensitive) to 6 (most sensitive). MSL is determined by the materials used in the component's construction, including the solderability of its terminals and the presence of moisture-absorbing materials. Components with higher MSL ratings require more stringent handling and storage conditions to prevent moisture absorption and subsequent damage during soldering.

Pitch, in the context of electronic components, refers to the distance between the centers of adjacent pins or terminals on a component. It is typically measured in millimeters (mm) or inches (in). The pitch determines the spacing between components on a printed circuit board (PCB) and affects the overall size and layout of the board. A smaller pitch allows for more components to be placed on a given area, but it also increases the risk of shorts and other manufacturing defects.

Current Rating is the maximum amount of current that an electronic component can safely handle without overheating or failing. It is typically expressed in amperes (A) or milliamperes (mA). Exceeding the current rating can damage the component and potentially create a safety hazard. The current rating is determined by the physical characteristics of the component, such as its size, material, and construction.

Contact resistance is the electrical resistance between two electrical contacts. It is caused by the imperfect contact between the two surfaces, which results in a small amount of resistance to the flow of current. Contact resistance can be a significant factor in the performance of electrical circuits, especially in high-power applications. It can cause power loss, heating, and even damage to components.