204351-4 Connectors, Interconnects

Wire Gauge:	22-28 AWG
Features:	--
Contact Size:	22
Termination Finish Thickness:	--
Termination Finish:	--
Contact Finish Thickness:	--
Contact Finish:	Gold
Contact Material:	Copper Alloy
Contact Termination:	Crimp
Series:	AMPLIMITE 90
Contact Form:	Machined
Contact Type:	Female Socket
Type:	Signal
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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What is 204351-4?

204351-4 is an internationally recognized standard for D-subminiature (D-sub) and D-shaped connectors contacts. The 204351-4 was developed through collaboration between the American National Standards Institute (ANSI) and the International Organization for Standardization (ISO) in order to provide uniform requirements for the contacts used in D-sub connectors. This specification ensures that contacts used in D-sub connectors have the identical physical characteristics, including both dimensions and connector wire sizes.

The Types of Contacts That Comply with the 204351-4 Standard

The 204351-4 standard covers two types of contacts that are most commonly used in D-sub connectors: male (plug) contacts and female (receptacle) contacts. Male contacts are typically equipped with curved contact fingers that are designed to fit into the circular cavities of the co-components’ female contacts. Female contacts have a spring-like design that helps ensure reliable connections when used with the male contacts.

Application Fields for D-Sub Connectors

D-sub connectors are widely used for various industrial applications, including the networking, communications, automotive, and medical industries. For example, they’re commonly used in the networking industry to connect computer systems and other electronic components. They’re also used in automotive for the purpose of connecting instrument clusters and other vehicle components. In the medical field, D-sub connectors are typically used to create connections between medical devices, such as diagnostic devices and monitoring equipment.

Working Principle of 204351-4 Connector Contacts

The working principle of the contacts listed in the 204351-4 specification revolves around four key elements: electrical contact, vibration protection, temperature resistance, and corrosion protection. Electrical contact is the primary purpose of D-sub connector contacts, so component accuracy is extremely important here. This is achieved by carefully controlling all of the dimensions of the contact, which ensures that the contact fingers securely fit into the female contacts and form reliable connections with other D-sub components. Vibration protection is also essential for ensuring reliable connections, especially in applications involving high vibration such as automotive and aerospace. This protection is ensured through the design of both the male and female contacts, which fit together in a manner that ensures the contact is securely held in place when subjected to vibration, further improving reliability. During operation, the contacts of D-sub connectors will be exposed to varying temperatures due to the environment. To ensure that the contacts maintain the same physical characteristics regardless of temperature, temperature resistance is essential for these components. Finally, corrosion protection is critical for protecting these components from environmental damage such as exposure to moisture. Special coatings or plating can be used to help protect the contacts from corrosion and extend their lifespan and reliability.

Conclusion

The 204351-4 standard provides a set of parameters for ensuring reliable connections between components in D-sub connectors. By controlling the dimensions, electrical contact, vibration protection, temperature resistance, and corrosion protection of the contacts, this standard helps to ensure reliable connections and a longer lifespan.

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