Amphenol ICC 51731-008 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51731-008 is a 30-position blade power connector header designed for board edge, through-hole, right-angle mounting applications. This connector features male pins and blades with a 0.100" (2.54mm) pitch, organized in 4 rows with 24 signal and 6 power contacts. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance requirements.

Substiute Parts

51731-008

Amphenol ICC (FCI)In Stock: 92951731-008 Datasheet

Current PartRFQ

51731-008LF

Amphenol ICC (FCI)In Stock: 73151731-008LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 51731-008LF serves as a direct functional equivalent to the 51731-008. Substitution is valid based on identical electrical and mechanical parameters: both connectors maintain the same 30-position configuration, 0.100" pitch, 4-row layout, contact arrangement (24 signal, 6 power), blade power style, board edge mounting orientation, solder termination, gold contact finish, UL94 V-0 flammability rating, and -20°C to 105°C operating temperature range.

The primary distinction between these parts is product status and compliance certification. The 51731-008 is obsolete with RoHS non-compliant status, while the 51731-008LF is active with RoHS compliant and REACH affected designations. The packaging differs (51731-008LF supplied in Tray format), and inventory availability reflects current market conditions.

Parameter Comparison

Engineering Selection Recommendations

The 51731-008LF is the appropriate selection for new designs and ongoing production requirements. This part maintains full electrical and mechanical compatibility with the obsolete 51731-008 while offering active product status and current compliance certifications. The 51731-008LF carries RoHS compliant designation and REACH affected status, aligning with contemporary regulatory requirements for electronic components in most markets.

For applications where the 51731-008 is currently deployed, transition to the 51731-008LF presents no functional risk, as all critical parameters—connector geometry, contact configuration, pitch, mounting orientation, termination method, and thermal operating range—remain identical. The compliance upgrade from RoHS non-compliant to RoHS compliant status represents an improvement for supply chain continuity and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Are the 51731-008 and 51731-008LF mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications: 30-position configuration, 0.100" pitch, 4-row layout, board edge through-hole right-angle mounting, and solder termination. Physical dimensions and mating interfaces are equivalent.

Q: What is the functional difference between these two parts?

A: There is no functional difference. Both parts deliver identical electrical performance with 24 signal and 6 power contacts, gold contact finish at 30.0µin thickness, and UL94 V-0 flammability rating. The distinction lies in product lifecycle status and compliance certifications.

Q: Why is the 51731-008 listed as obsolete?

A: The 51731-008 has reached end-of-life status. The 51731-008LF represents the active equivalent within the PwrBlade® series, ensuring continued availability and compliance with current regulatory standards.

Q: Does the packaging difference affect compatibility?

A: No. The 51731-008LF is supplied in Tray packaging, which is a distribution format. This does not alter the connector's electrical or mechanical properties. Packaging selection is determined by procurement and inventory management requirements.

Q: Can the 51731-008LF be used as a direct replacement in existing assemblies?

A: Yes. The 51731-008LF is a direct replacement. All mating interfaces, pin configurations, and electrical characteristics are identical to the 51731-008. No design modifications are required.

Q: What does RoHS compliance mean for this connector?

A: RoHS compliance indicates the 51731-008LF meets restrictions on hazardous substances in electrical and electronic equipment. The 51731-008 is RoHS non-compliant, while the 51731-008LF is RoHS compliant, making the latter suitable for applications subject to RoHS regulations.

Q: Are there any temperature or environmental limitations?

A: Both connectors operate within the same temperature range: -20°C to 105°C. Both carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.