Cinch Connectivity Solutions 51A Terminal Lug Strip Equivalent & Substitute Parts

Part Overview

The Cinch Connectivity Solutions 51A is a 2-position terminal lug strip with single-end terminal lugs and integrated ground position. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications. The 51A features a compact board size of 0.375" W x 0.625" H with cadmium-plated steel contacts and XPC board material rated UL94 HB.

Due to obsolete product status, sourcing equivalent or substitute components is required for system maintenance, repair, and new production applications requiring compatible terminal lug strip functionality.

Substiute Parts

51A

Cinch Connectivity SolutionsIn Stock: 119151A Datasheet

Current PartRFQ

801

Keystone ElectronicsIn Stock: 1085801 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Cinch 51A terminal lug strip is determined by equivalence in the following critical parameters:

Functional Equivalence Criteria:

• Terminal Type: Terminal Lug, Single End
• Number of Positions: 2 (1 + 1 Ground)
• Number of Rows: 1
• Mounting Hole Diameter: 0.140" (3.56mm)

Mechanical Compatibility Criteria:

• Board mounting interface and hole diameter alignment
• Single-row configuration
• Two-position lug strip layout with ground position

The Keystone Electronics 801 satisfies these functional and mechanical equivalence requirements. While secondary parameters such as board material, contact finish, and contact material differ between the 51A and 801, these variations remain within acceptable substitution parameters for terminal lug strip applications where the primary function—providing two-position single-end terminal lug connectivity with ground—is preserved.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Product Replacement:

The Keystone Electronics 801 serves as the primary substitute for the discontinued Cinch 51A. Both components share identical functional specifications for terminal lug strip configuration, position count, and mounting interface. The 801 is currently in active production status, ensuring long-term availability and supply chain continuity.

Compliance Considerations:

The Keystone 801 achieves ROHS3 compliance, whereas the Cinch 51A is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 801 provides compliant substitution. Both components maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

Physical Dimensions:

The Keystone 801 board dimensions (0.750" L x 0.375" W x 0.062" H) differ from the Cinch 51A (0.375" W x 0.625" H). The mounting hole diameter remains identical at 0.140" (3.56mm). Physical space constraints in existing designs must be evaluated prior to substitution.

Contact Material and Finish:

The 51A employs cadmium-plated steel contacts, while the 801 uses tin-plated brass contacts. Both configurations provide electrical conductivity suitable for terminal lug strip applications. The brass/tin combination in the 801 offers improved corrosion resistance compared to cadmium-plated steel.

Frequently Asked Questions (FAQ)

Q: Can the Keystone 801 directly replace the Cinch 51A in existing applications?

A: The Keystone 801 provides functional equivalence as a terminal lug strip with identical position count, terminal type, and mounting hole diameter. Physical board dimensions differ; verify that the larger 801 board size accommodates existing mounting locations and clearance requirements.

Q: What are the key differences between these two components?

A: Primary differences include board material (XPC vs. XP Phenolic), contact material (Steel vs. Brass), contact finish (Cadmium vs. Tin), product status (Obsolete vs. Active), and RoHS compliance (non-compliant vs. ROHS3 compliant). Functional terminal lug strip operation remains equivalent.

Q: Is the Keystone 801 suitable for RoHS-regulated applications?

A: Yes. The Keystone 801 is ROHS3 compliant, making it suitable for applications subject to RoHS directives. The Cinch 51A is RoHS non-compliant and does not meet these regulatory requirements.

Q: Are the mounting hole diameters identical?

A: Yes. Both the Cinch 51A and Keystone 801 feature 0.140" (3.56mm) mounting hole diameter, ensuring mechanical compatibility at the mounting interface.

Q: What is the impact of different contact materials on electrical performance?

A: Both steel/cadmium and brass/tin contact combinations provide adequate electrical conductivity for terminal lug strip applications. Brass/tin contacts offer superior corrosion resistance in humid or corrosive environments.

Q: Are there any supply chain advantages to using the Keystone 801?

A: The Keystone 801 maintains active production status with current inventory availability, whereas the Cinch 51A is obsolete with limited remaining stock. The 801 ensures long-term sourcing capability for ongoing production and maintenance requirements.