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Introduction

Connector technology is used for the connection of two objects whendisconnecting them is not desired. Connectors with a specific applicationand working principle are specified in the classification known as“Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board)”.This article includes an examination of the “QFS-026-04.25-H-D-A-GP”connector as an example of this classification. This connector’s features,application field, and working principle will be discussed in thefollowing sections.

Features

The QFS-026-04.25-H-D-A-GP connector consists of two separatepieces; the male connector header and the female connector terminal. Themale header is typically installed on a printed circuit board (PCB) withthe female terminal connected externally through cables and wires.The male connector header has three rows of two pins each, with apitch (spacing between pins) of 0.1 inches (2.54mm) and is 0.4 inches(10.16mm) in length. The female terminal, meanwhile, has individualterminals in each row, which are configured with a pitch of 0.95 inches(4.1mm) and a length of 1.6 inches (6.35mm).

Application Field

The QFS-026-04.25-H-D-A-GP connector is specifically designed forthe engagement of printed circuit boards (PCBs) which need to beconnected with external cables and wires. It is particularly suited forapplications which require a high level of reliability as it provides asecure connection due to its positively locking design. It is mostcommonly used in industrial control panels, measuring and monitoringsystems, medical systems, communications equipment, and otherprofessional equipment.

Working Principle

The QFS-026-04.25-H-D-A-GP connector uses the principle of mechanicalengagement to provide a secure connection between two components.The male header is designed to be inserted into the female terminal,which is normally affixed to a printed circuit board or cable. The maleheader is secured to the female terminal by two pins which hold theconnector in place. This positively locking design provides a secureconnection and ensures that no contact is lost during vibration ormechanical misalignment.

Conclusion

The QFS-026-04.25-H-D-A-GP connector is a reliable and secureconnector which is specifically designed to engage printed circuitboards and externally cabled devices. It uses the principle of mechanicalengagement to provide a secure connection and is used in a variety ofapplications including industrial control panels, measuring andmonitoring systems, medical systems, communications equipment, andother professional equipment.

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