Amphenol ICC 51786-003 Backplane Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51786-003 is a 30-position backplane connector header featuring male pins and blades with right-angle board edge mounting. This connector is part of the PwrBlade® series and is designed for through-hole soldering applications with integrated blade power distribution. The part is currently classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

51786-003

Amphenol ICC (FCI)In Stock: 75651786-003 Datasheet

Current PartRFQ

51786-003LF

Amphenol ICC (FCI)In Stock: 549751786-003LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51786-003 is determined by strict equivalence across the following critical parameters:

• Connector Type & Style: Header with male pins and blades, blade power configuration
• Position Count & Layout: 30 total positions with 24 signal and 6 power contacts
• Pitch & Row Configuration: 0.100" (2.54mm) pitch with 4-row arrangement
• Mounting Specification: Board edge, through-hole, right-angle orientation
• Contact Finish & Thickness: Gold or Gold GXT™ at 30.0µin (0.76µm)
• Environmental Ratings: UL94 V-0 flammability, -20°C to 105°C operating range, MSL 1

The substitute part 51786-003LF maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Parameter Comparison

Engineering Selection Recommendations

The 51786-003LF is the direct functional equivalent of the 51786-003 and is suitable for all applications requiring the 51786-003 specification. Selection of the 51786-003LF is supported by the following factors:

• Product Status: The 51786-003LF maintains active product status with confirmed inventory availability (5400 pcs), whereas the 51786-003 is obsolete.
• Regulatory Compliance: The 51786-003LF is RoHS compliant, meeting current environmental regulations. The original 51786-003 is RoHS non-compliant.
• Electrical & Mechanical Equivalence: All connector specifications, contact configurations, pitch, mounting orientation, and environmental ratings are identical between both parts.
• Packaging: The 51786-003LF is supplied in tray packaging, suitable for automated assembly and component handling.

Frequently Asked Questions (FAQ)

Q: Can the 51786-003LF be used as a direct replacement for the 51786-003?

A: Yes. The 51786-003LF is electrically and mechanically equivalent to the 51786-003. Both parts share identical connector type, position count, pitch, mounting configuration, contact layout, and environmental ratings. The primary differences are product status and RoHS compliance.

Q: What is the significance of the "LF" suffix in the part number 51786-003LF?

A: The "LF" suffix indicates lead-free construction, which aligns with RoHS compliance requirements. This designation reflects the material composition of the connector contacts and solder termination.

Q: Are there any compatibility concerns when substituting the 51786-003 with the 51786-003LF?

A: No compatibility concerns exist. Both parts are designed for the same PCB footprint, mounting method, and mating interface. The contact finish, thickness, and electrical properties remain consistent.

Q: What packaging options are available for the 51786-003LF?

A: The 51786-003LF is supplied in tray packaging, which is standard for backplane connector distribution and compatible with automated pick-and-place assembly processes.

Q: Is the 51786-003 still available for purchase?

A: The 51786-003 is classified as obsolete. The 51786-003LF is the active equivalent with confirmed inventory availability and is the recommended selection for new designs and ongoing system support.