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Molex Flexi-Pin Stack Connectors.

Flexi-Pin Stack Connectors

The unique dual-orientation design of Flexi-Pin Stack Connectors offers exceptional flexibility with vertical and right-angle configurations, enhancing product versatility and reducing design constraints. The streamlined design reduces handling steps, delivering cost savings and shorter production cycle times by eliminating the need for additional stitching machines.

Features and Benefits


With an increasing demand for flexible and modular designs, customers seek solutions that offer vertical and right-angle orientation flexibility to optimize PCB real estate and design efficiency. As devices grow more complex and compact, maintaining tight tolerances in connector positions is crucial for performance and reliability. Industries are focusing on lean manufacturing by reducing equipment needs and handling steps to streamline production and minimize costs.

Solutions that require low investment are necessary as manufacturers face high equipment costs and process inefficiencies. Avoiding the need for additional stitching or assembly equipment helps to accelerate process timelines by boosting productivity and overall efficiency.

Flexi-Pin Stack Connectors are compatible with existing surface mount technology (SMT) pick-and-place equipment which lowers capital investment. These connectors feature unique dual-orientation design options (vertical and right angle) that reduce design constraints and increase product versatility. Flexi-Pin Stack Connectors require less manufacturing space by eliminating the need for a stitch machine station. These connectors provide high reliability under electrical and mechanical stresses.

Low Capital Investment

Flexi-Pin Stack Connectors are compatible with existing SMT pick-and-place equipment, which eliminates the need for additional stitching machines. This leads to lower investment costs, faster production cycles and simplified manufacturing processes.

Molex Flexi-Pin Stack SMT-compatible connector with six circuits.

High Quality and Reliability

Flexi-Pin Stack Connectors are created via precision manufacturing processes that ensure the pins are positioned within very tight tolerances, using the PIN true position process. Accurate pin placement and tight pin tolerances help ensure reliable mating and reduce mechanical stress during mating.

Precision-manufactured Molex Flexi-Pin Stack connector with eight circuits.

Increased Space Savings

The unique vertical and right-angle options of Flexi-Pin Stack Connectors enable designers to optimize PCB real estate and provide more space for additional components or functionality to be integrated without increasing the overall size or cost.

Space-saving Molex Flexi-Pin Stack connector with four circuits.

Helps increase product versatility
Flexible vertical and right-angle configurations minimize design constraints while maximizing PCB real estate.

Ensures performance under harsh operating conditions
The connectors are designed for high reliability under electrical and mechanical stresses, and tested for insulation resistance, dielectric withstand voltage and axial pullout force.

Helps decrease overall cycle time and associated costs
The connectors are designed to fit seamlessly into existing SMT pick-and-place lines, enhancing process efficiency and reducing complexity.

Enhances product reliability and quality
Precision manufacturing improves pin true position accuracy and ensures tight tolerances.

Helps ensure compliance, durability and customer confidence
The connectors meet stringent automotive and global manufacturing standards, and provide robust, high-quality connector solutions that comply with international standards.

Documents and Resources


Applications by Industry


Electric loaders
Electric mowers
Electric tractors

Domain control unit devices
Electronic control unit devices

This is not a definitive list of applications for this product. It represents some of the more common uses.

Frequently Asked Questions


What are Flexi-Pin Stack Connectors?

Flexi-Pin Stack Connectors are reliable, versatile and precision-manufactured connectors designed for automotive and industrial automation applications. These connectors feature a unique dual-orientation design with vertical and right-angle options to optimize PCB real estate and design flexibility. Compatible with existing SMT pick-and-place lines, Flexi-Pin Connectors enhance process efficiency and decrease overall cycle time and associated costs.

What makes Flexi-Pin Stack Connectors different from the competition?

The unique dual-orientation design of the Flexi-Pin Stack Connectors, with vertical and right-angle options, reduces design constraints and increases product versatility. The compatibility of Flexi-Pin Stack Connectors with existing SMT pick-and-place lines helps improve process efficiency. Accurate pin placement and tight pin tolerances help ensure reliable mating and reduce mechanical stress during mating, improving product quality and reliability. These connectors are designed in such a way that multiple pin sizes are stacked into one family, reducing part numbers, equipment needs and handling steps to help streamline production and minimize costs.

Why should I choose Molex Flexi-Pin Stack Connectors?

Flexi-Pin Stack Connectors reduce capital investment since they do not require additional stitching machines, thus minimizing the total cost of ownership. Designed for seamless integration with customers’ SMT pick-and-place lines, these connectors leverage existing SMT infrastructure to help reduce cycle time and overall costs.