1-644874-2

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Rectangular connectors have long held a place in devices that handle sensitive signals. This is due to their robust design, which is beneficial in application fields such as communications, computing, instrumentation, or medical devices. The 0.1" (2.54 mm) pitch headers such as the 1-644874-2 is one such example that helps provide reliability and performance. Here we will go over the application field and working principle of the 1-644874-2 header.

Application Field

The application field of the 1-644874-2 is mainly in the telecom sector. This header works particularly well in hazardous or high-voltage environments, as it offers a two connection point contact interface that can handle up to 5 Amps. This means that devices such as switches, routers, and telecom test instruments can enjoy a highly reliable connection when using the 1-644874-2. On top of that it is also Moisture Seal Rated for excellent performance in humid conditions. Lastly, this header is both high temperature (125°C) and salt spray rated to ensure the best performance possible in varying environmental conditions.

Working Principle

The 1-644874-2 head has a unique two-connection point contact interface, which provides reliable connections and adds durability. This header operates using an insulator body that is made from PBT (Polybutylene terephthalate) and an embedded insert made from copper alloy. It also has an optional ground spring for added reliability.

The insert is placed in the insulator body with a “plunger” that holds it in place. The plunger is then pushed into the insulator body when the header is connected to a mating receptor. This creates a reliable connection between the two mating parts. The header’s contact design also allows for a straight-through connection with no resistance.

To ensure reliable electrical performances, the specification also defines limits for maximum insertion and withdrawal force. This ensures that there is no interference when connecting the header and successful operation. The other important performance criteria are contact resistance, Durability, and Operating temperature which all fall in line with the intended application field.

Conclusion

The 1-644874-2 header is a robust device designed for telecom applications. It has a two-connection point contact interface which is highly reliable and durable. It is both high temperature rated and Moisture Seal Rated, making it an ideal choice for hazardous or high-voltage environments. The specification also provides limits for maximum insertion and withdrawal force as well as contact resistance, Durability, and Operating temperature criteria to ensure the best performance in varying conditions.

The specific data is subject to PDF, and the above content is for reference