RH7083C-3.5-21/927366-1 12 V, 8 Position, Automotive Housing for Female Terminals

Detailed Product Description

The RH7083C-3.5-21/927366-1 is a robust, non-sealable 8-position automotive housing connector designed for 12V wire-to-wire power applications. This rectangular connector is specifically engineered for 2.8mm female receptacle terminals, making it an ideal choice for power distribution circuits in vehicles and industrial equipment. Featuring a distinctive yellow PA housing, keying code A, 2-row configuration, and terminal position assurance (TPA), this connector delivers reliable power transmission in non-sealed environments such as interior cabins, dry underhood areas, and industrial control panels.

Product Type Features

This connector features a rectangular shape, providing efficient space utilization and ease of handling during harness assembly. It is a non-mixed, non-hybrid connector, meaning all 8 positions accept identical 2.8mm female receptacle terminals, simplifying inventory management and assembly processes. As a housing for female terminals, it is designed to mate with corresponding male terminal housings or headers. The connector is non-sealable (Sealable: No) , making it suitable for interior or protected environments where moisture ingress is not a primary concern, while offering cost advantages compared to sealed alternatives.

The primary locking feature is on the terminal itself, not integrated into the housing. This design means the terminal provides its own retention mechanism, which is a proven approach for 2.8mm contact systems. The connector system is wire-to-wire, and the connector terminates directly to wire and cable, making it versatile for various cabling scenarios including harness-to-harness connections.

Configuration Features

The housing provides 8 positions arranged in 2 rows (typically 4 positions per row). This 2x4 configuration offers a balanced, compact design that is easy to handle and route in tight spaces. The two-row layout provides a low-profile connector body while maintaining clear contact assignment.

Electrical Characteristics

The nominal voltage architecture is 12V, making this connector perfectly suited for standard automotive electrical systems, including power distribution, lighting circuits, and control modules. The circuit application is specifically designated for Power, distinguishing this connector from signal-only connectors. This power-oriented design means the connector is optimized for higher current carrying capacity and robust mechanical durability required for power transmission applications.

Terminal Features

The housing accepts receptacle-type contacts (female terminals) with a contact size of 2.8mm. The mating tab width is precisely 2.8 mm (0.11 in) , a widely used standard in automotive and industrial power connectors. The 2.8mm contact system offers several advantages for power applications:

Higher current capacity compared to smaller 1.5mm or 1.8mm signal contacts – suitable for power distribution

Robust mechanical strength – withstanding high insertion forces and vibration

Proven reliability – widely used in automotive power circuits globally

Wide availability of mating terminals and tooling

The receptacle contact design provides reliable, low-resistance electrical connection when mated with corresponding 2.8mm male tabs, ensuring minimal voltage drop and heat generation in power circuits.

Mechanical Attachment

Mating alignment is provided with a keyed alignment type. Keyed connectors use asymmetric plastic features that physically prevent incorrect mating or cross-mating with connectors having different keying codes. The keying code A feature ensures that only connectors with matching keying code A can be mated correctly.

Terminal Position Assurance (TPA) is provided – Yes. TPA is a secondary locking device that independently locks terminals into the housing after initial insertion. This is a critical safety feature for power connectors because:

It prevents terminals from backing out due to vibration or thermal cycling

Provides visual confirmation that terminals are fully seated

Adds a redundant retention mechanism beyond the primary terminal lock

Required for power applications subject to shock, vibration, or high mating cycles

Strain relief is not provided (Without) – for applications with significant cable movement or vibration, external strain relief such as cable ties or conduit is recommended.

The connector mounting type is Cable Mount (Free-Hanging) , offering maximum flexibility for harness assembly without requiring panel or PCB mounting. This makes the connector ideal for in-line power connections between wire harnesses.

Housing Features

The housing is manufactured from PA (Polyamide/Nylon) . Polyamide (Nylon) is a high-performance engineering plastic offering distinct advantages for power connectors:

Excellent mechanical strength and toughness – highly resistant to impact and crack propagation

Good flexibility – less brittle than PBT, making it more resistant to housing damage during terminal insertion and connector mating

High heat resistance – retains mechanical properties at elevated temperatures

Good chemical resistance – withstands automotive fluids including oil, fuel, and coolants

Wear resistance – maintains dimensional stability under repeated mating cycles

Cost-effective – offers good performance at a competitive price point

The centerline (pitch) between adjacent contacts is 5.08 mm (0.2 in) . This 5.08mm (0.2 inch) pitch offers several benefits for power applications:

Ample electrical spacing – provides sufficient creepage and clearance for 12V power circuits

Excellent current isolation – reduces risk of arcing or cross-talk between adjacent power contacts

Accommodates larger wire gauges – allows for proper wire bending radius and termination

Industry standard pitch – 5.08mm is a common pitch for power connectors, ensuring compatibility with standard tooling

Dimensions – Low-Profile Design

Connector Height: 23 mm (0.9 in)
Product Length: 28.8 mm (1.13 in)
Product Width: 13.8 mm (0.54 in)
Row-to-Row Spacing: 5.08 mm (0.2 in)

The RH7083C-3.5 features a very compact, low-profile design. At only 13.8mm wide and 23mm high, this connector is significantly narrower than many 8-position connectors. The 28.8mm length provides ample room for terminal retention features and keying. The row-to-row spacing matches the contact pitch at 5.08mm, creating a consistent symmetrical grid. This slim, low-profile form factor makes the connector ideal for routing in tight spaces such as behind dashboards, inside door panels, or within equipment enclosures.