EJH-125-01-S-D-SM-41

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This article focuses on the application field and working principle of a specific type of rectangular connector, namely the EJH-125-01-S-D-SM-41 male pin connector.

Rectangular connectors or headers are a type of connector used mainly in electronic circuits and commonly employed as a mechanical device to connect two circuits together via their electrical conductors. They are typically found in applications such as computer peripherals, consumer electronics, audio-video equipment and industrial equipment.

The EJH-125-01-S-D-SM-41 male pin connector is a single row, two-piece male pin connector with a set of codes that indicate its characteristics. The “EJH” means that the connector type is a its corresponding male pin, while the 125 indicates the pitch size of 1.25mm. The 01 indicates the contact number, in this case 1, and the S-D-SM stand for Standard Interface, Density, Surface Mount respectively. The 41 stand for the contact Finishing of Tin over Nickel.

When using the EJH-125-01-S-D-SM-41 male pin connector, there is no need to solder the terminals. This is due to the surface mount-style interface, which ensures a secure and reliable connection between the terminal and the board without the need for soldering. This feature makes it suitable for applications that require quick and easy assembly and disassembly.

The EJH-125-01-S-D-SM-41 male pin headers are mostly compatible with board to board connectors from different brands and allow for simple swapping from one brand to another. This makes them suitable for applications requiring flexibility and quick repairs. They are widely used in applications such as aircraft interiors, medical equipment and telecommunications devices.

The working principle of the EJH-125-01-S-D-SM-41 male pin connector is quite simple. Two separate sets of contacts are placed on the board and the connector housing. When a mating connector is inserted, the two sets of corresponding contacts make a connection. The connection is then held securely in place with the connector housing, preventing the contacts from being pulled apart in the event of an overcompressed connection.

The contacts of the EJH-125-01-S-D-SM-41 male pin headers are plated with Tin over Nickel, providing a corrosion-resistant contact interface and a good electrical connection between the two connectors. Furthermore, the Tin-over-Nickel plating also helps to reduce contact resistance and improve the current-carrying capability of the connectors.

In conclusion, the EJH-125-01-S-D-SM-41 male pin headers offer a reliable and secure connection for electronic circuits. They feature a surface mount-style interface as well as a Tin-over-Nickel plated contact finish, making them suitable for a wide range of applications. Furthermore, they are compatible with board to board connectors from different brands, allowing for simple and easy swapping and repairs.

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