DF33-8DS-3.3C

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DF33-8DS-3.3C Application Field and Working Principle

DF33-8DS-3.3C is an advanced rectangular housing connector designed to meet a broad range of applications that require a low profile, space-saving device. This ultra-small package allows for connection of up to 8 discrete signals with shielding capability in a low profile 5mm pitch. Its versatile terminal design accepts a wide range of signal and power contact circuits in the same housing, providing users with a flexible design without external modifications to the connector and allowing for easier manufacturing.

Applications for this type of connector vary greatly, but may include industrial and medical equipment, as well as PCB mounting such as portable devices, embedded systems, and various automotive and aerospace systems. This rectangular connector is often the choice for applications requiring a compact design with high reliability in a short space.

Pin Assignments

The DF33-8DS-3.3C rectangular housing connector is available in two different pin assignments: 2 signal + 2 power (2S+2P), and 4 signal + 2 power (4S+2P). The configuration components for the connectors are pre-assembled and ready to use. The power pins contain dual-row contacts, allowing current paths to two power circuits from the same pin assignment. The number of power pins is determined by the application’s power requirements.

Design

The connector design features a robust printed circuit board (PCB) mountable housing with a pitch of just 5mm, allowing for connection of up to 8 discrete signals. The contacts are also specially designed with high contact density and retention, providing a reliable connection in a small package. The contacts are also equipped with a retention feature to ensure secure mating and vibration, shock, and other environmental conditions.

The housing is made from high-temperature polyamide with a white flame retardant rating (UL 94V-0) that is resistant to heat and chemicals. The cable openings and terminals are designed for ease of use while providing adequate strain relief for the cables. The connectors have universal polarizing features for removing mis-mating and preventing incorrect cable assembly. The terminal contacts feature superior electrical and mechanical stability, with enhanced contact reliability and durability.

Working Principle

The working principle of the DF33-8DS-3.3C Rectangular Housing Connector is based on contact force and contact friction. Its sliding contact system allows the contacts to mate by being pushed together under force from the terminal or the mating connector. Both sides of the contact contain a spring tongue that is in contact with the mating surface, creating a positive connection. The contact pin pressure increases with the applied mating force, creating superior electrical and mechanical reliability.

The spring tension in the contact ensures that the mating surfaces will always make secure contact, eliminating contact bouncing and unreliable connections. When the contact is fully engaged, the contact surface between the contacts and the housing is electrically insulated, ensuring no short circuit between adjacent contacts. The spring-loaded design also reduces wear in the contacts from vibration, shock, and other environmental conditions.

The DF33-8DS-3.3C is designed to meet a wide range of application needs in terms of flexibility and reliability. Its small and robust footprint allows for optimal board space utilization, while its pre-assembled and easy-to-use design makes assembly easier for manufacturers. The wide range of contacts and power pins makes it suitable for a variety of power requirements and the secure connections insure maximum reliability for its users.

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