RH70680A-1.5-11/1-1703773-1 12 V / 24 V / 48 V, 6 Position, Automotive Housing for Female Terminals

The RH71616Y-1.8-21/368047-1 is a high-performance 6-position automotive connector housing designed specifically for female terminals. This connector is part of the advanced MCP 1.5K series, which is widely recognized in the automotive industry for its reliability, durability, and excellent electrical performance. The housing is engineered to support nominal voltage architectures of 12V, 24V, and 48V, making it highly versatile for a broad range of vehicle electrical systems, from traditional passenger cars to commercial vehicles and emerging 48V mild hybrid platforms.

Mechanical and Structural Design

The connector features a rectangular shape, which allows for efficient space utilization within crowded engine compartments or other vehicle areas. It adopts a wire-to-wire connection system, enabling secure and stable connections between different wiring harnesses. The housing is designed for cable mounting (free-hanging), offering flexibility during installation and maintenance. With a cable exit angle of 180 degrees, the connector allows straight cable routing, simplifying harness assembly and reducing bending stress on wires.

Terminal and Contact Specifications

This housing is intended for use with receptacle-type contacts. The contact size is 1.5K, with a mating tab width of 1.5 mm (0.059 inches). Each contact can carry a maximum current rating of 20A, making the connector suitable for power circuit applications. The primary locking feature is located on the terminal itself, ensuring that the terminals are securely anchored within the housing once properly inserted. Additionally, the connector includes Terminal Position Assurance (TPA), which provides a secondary locking mechanism to prevent terminal back-out or misalignment, even under high-vibration conditions commonly found in automotive environments.

Sealing and Environmental Protection

The connector is fully sealable, providing excellent protection against moisture, dust, and other contaminants. This sealing capability is critical for under-hood and exterior applications where exposure to water, road salt, and chemicals is inevitable. The operating temperature range of -40°C to 140°C (-40°F to 284°F) further demonstrates the connector's ability to perform reliably in extreme cold and high-heat environments, from arctic conditions to hot engine bays.

Housing Material and Durability

The housing is molded from glass-filled PBT (Polybutylene Terephthalate), a high-strength engineering thermoplastic known for its excellent dimensional stability, heat resistance, and chemical resistance. The glass-fiber reinforcement enhances the mechanical strength of the housing, making it resistant to impact and creep under load. The primary product color is black, which is standard for many automotive connectors and provides UV resistance for applications where sunlight exposure may occur.

Dimensions and Pitch

The connector has a centerline (pitch) of 4 mm (0.157 inches) between adjacent positions. The overall product length is 43 mm (1.693 inches), the width is 25.7 mm (1.012 inches), and the height is 31.25 mm (1.23 inches). The connector features two rows of positions, with a row-to-row spacing of 2.54 mm (0.1 inches). These compact dimensions allow the connector to be used in space-constrained environments without compromising on performance or reliability.

Electrical Characteristics

The operating voltage is rated at 60 VDC, which comfortably covers the 12V, 24V, and 48V nominal voltage architectures. This makes the connector suitable for a wide range of electrical systems, including lighting, control modules, sensors, and power distribution units. The connector is not a mixed or hybrid type, meaning all positions are designed for the same contact size and type, simplifying inventory and assembly.

Applications

This connector is ideal for automotive power circuit applications. Common uses include engine control units, transmission controllers, battery management systems (especially for 48V mild hybrids), electric power steering, lighting systems, and various sensors and actuators. Its robust design and high current rating make it a preferred choice for demanding environments where vibration, temperature extremes, and moisture are present.

Installation and Assembly Considerations

During assembly, care must be taken to insert the female terminals correctly into the housing. The Terminal Position Assurance feature should be engaged after terminal insertion to lock the terminals in place. No strain relief is provided on the housing itself, so the wiring harness should include appropriate strain relief measures near the connector. The free-hanging mounting type allows the connector to float within the harness, reducing stress on the terminals and wires.

Reliability and Testing

Connectors of this series are typically subjected to rigorous testing, including thermal shock, temperature cycling, vibration, moisture resistance, and contact resistance tests. The use of glass-filled PBT and high-quality contact materials ensures long-term reliability and stable electrical performance throughout the vehicle's lifespan.

Conclusion

The RH71616Y-1.8-21/368047-1 6-position automotive housing for female terminals is a well-engineered, highly reliable component suitable for modern automotive electrical systems. Its combination of sealing, terminal position assurance, keyed mating, wide temperature range, and support for 12V/24V/48V architectures makes it an excellent choice for engineers seeking a durable and easy-to-use connector for power applications.