Cinch Connectivity Solutions 55B Terminal Lug Strip Equivalent & Substitute Parts

Part Overview

The Cinch Connectivity Solutions 55B is a 7-position terminal lug strip with 1.500" (38.10mm) pitch spacing, designed for single-end terminal lug applications. This component features a XPC board material with cadmium-plated steel contacts and is rated UL94 HB for flammability. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

55B

Cinch Connectivity SolutionsIn Stock: 93455B Datasheet

Current PartRFQ

823

Keystone ElectronicsIn Stock: 782823 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 55B is determined by the following critical parameters:

• Number of Positions: Must be 7 positions with 5 + 2 ground configuration
• Terminal Type: Must be terminal lug, single end
• Number of Rows: Must be single row
• Mounting Hole Diameter: Must be 0.140" (4.66mm)
• Pitch Spacing: Determines physical board layout and interconnect spacing
• Board Material & Contact Properties: Affect electrical performance and environmental durability
• Compliance Status: RoHS and regulatory certifications ensure suitability for current applications

The Keystone Electronics 823 qualifies as a substitute based on matching position count, terminal type, row configuration, and mounting hole diameter. However, the pitch spacing differs (0.375" vs. 1.500"), resulting in a different physical footprint and board dimensions.

Parameter Comparison

Engineering Selection Recommendations

The Keystone Electronics 823 is an active product with current manufacturing support and ROHS3 compliance, providing a path forward from the obsolete Cinch 55B. Both parts maintain identical position counts, terminal configurations, and mounting hole specifications, ensuring mechanical compatibility at the mounting interface.

The primary design consideration is pitch spacing: the 55B operates at 1.500" (38.10mm) while the 823 operates at 0.375" (9.53mm). This difference results in distinct physical footprints and board dimensions. Selection of the 823 requires verification that the reduced pitch spacing accommodates the target application's layout constraints and interconnect requirements.

Both parts carry MSL 1 ratings, indicating unlimited moisture sensitivity tolerance. The 823's active status and ROHS3 compliance support long-term supply chain continuity and regulatory alignment with current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the Keystone 823 directly replace the Cinch 55B in existing assemblies?

A: Direct mechanical replacement is possible at the mounting interface due to matching mounting hole diameter (0.140"). However, the pitch spacing difference (1.500" vs. 0.375") means the board dimensions and terminal spacing are not identical. PCB layout and interconnect routing must be evaluated for compatibility.

Q: What is the significance of the pitch spacing difference?

A: Pitch spacing determines the physical distance between terminal lugs and the overall board length. The 55B's 1.500" pitch results in a larger board footprint compared to the 823's 0.375" pitch. Applications with space constraints may benefit from the 823's compact design, while applications requiring specific terminal spacing must confirm the 0.375" pitch is acceptable.

Q: Are there compliance differences between the two parts?

A: The 55B is RoHS Compliant, while the 823 is ROHS3 Compliant. ROHS3 represents an updated compliance standard. Both parts carry MSL 1 ratings and are suitable for unlimited moisture exposure conditions.

Q: What are the contact material differences?

A: The 55B uses cadmium-plated steel contacts, while the 823 uses tin-plated brass contacts. These material compositions affect electrical conductivity, corrosion resistance, and environmental durability. Application-specific requirements for contact performance should be evaluated.

Q: Is the 823 suitable for new designs?

A: Yes. The 823 is an active product with current manufacturing support, ROHS3 compliance, and established supply chain availability. It is appropriate for new designs requiring a 7-position, single-row terminal lug strip configuration.