91403-003

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Rectangular connectors are an essential part of any board-mount, cable interconnect system. The 91403-003 series is a reliable and versatile solution suited for a range of applications, including edge boards, mezzanine boards, and more. This article explains both the application field and working principle of the 91403-003.

Application Field of 91403-003

The 91403-003 is primarily used to connect board-to-board components and cables in mezzanine and edge type applications. It is a two-row board-to-wire connector that supports reliable high-speed signal transmission. The 91403-003 features two 4-lane, high-speed differential pairs, mated with a solder tail or surface mount tail solution. This makes it suitable for applications that require high-performance data transmission, such as bus-based systems. The 91403-003 series is also supported by stands and can be soldered to minimize component installation time. It is made of UL94V-0 rated material and is tested to meet UL and CSA safety standards, making it suitable for industrial and commercial applications.

Working Principle of the 91403-003

The 91403-003 series is designed to deliver a high-performance signal transmission path by combining two 4-lane differential pairs with a common ground return. The differential pairs support bidirectional data transmission, with one pair pushing data and the other pair receiving data. This helps reduce electromagnetic interference (EMI) since the output voltage levels remain the same regardless of operating conditions. Each differential pair is supported by a unique connector interface that is designed for low contact resistance. The mated connectors maintain their mechanical integrity throughout the range of thermal cycling during installation.

The 91403-003 features a rugged housing to ensure a reliable connection in edge and mezzanine board applications. The contacts are arranged into two rows, and the gap between the rows helps reduce crosstalk. The connector is mated with a closed-end cap, which helps protect the contacts from contaminants. The 91403-003 connectors also feature a locking mechanism that helps make sure the connector stays securely mated.

The 91403-003 series is an efficient and reliable solution for high-speed differential pair signals and board-to-board connections. It is easy to install, thanks to its solder tail or surface mount tail solution. The 91403-003 connectors are also designed to pass UL and CSA safety standards, making them suitable for industrial and commercial applications.

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