Amphenol ICC 51866-037 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51866-037 is a 20-position receptacle connector featuring female sockets and blade sockets for board edge, through-hole, right-angle mounting in blade power applications. This connector is part of the PwrBlade® series and provides a contact layout of 12 signal and 8 power positions with press-fit and solder termination options.

The 51866-037 is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for maintenance, repair, and new design implementations where this connector specification is required.

Substiute Parts

51866-037

Amphenol ICC (FCI)In Stock: 107951866-037 Datasheet

Current PartRFQ

51866-037LF

Amphenol ICC (FCI)In Stock: 96651866-037LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 51866-037 is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets and blade sockets
• Number of positions: 20
• Pitch: 0.100" (2.54mm)
• Number of rows: 4
• Mounting configuration: Board edge, through-hole, right-angle
• Termination method: Press-fit and solder
• Contact layout: 12 signal, 8 power positions
• Contact finish: Gold or Gold, GXT™
• Contact finish thickness: 30.0µin (0.76µm)
• Color: Black
• Flammability rating: UL94 V-0
• Operating temperature range: -20°C to 105°C

The substitute part 51866-037LF maintains full electrical and mechanical compatibility with the original specification while offering improved compliance status and active product availability.

Parameter Comparison

Engineering Selection Recommendations

The 51866-037LF is the direct substitute for the obsolete 51866-037. Both parts are electrically and mechanically identical across all functional parameters. The primary distinctions are:

Product Status: The 51866-037 is obsolete, while the 51866-037LF is active. For new designs and ongoing production, the 51866-037LF ensures long-term component availability and supply chain continuity.

Compliance: The 51866-037LF is RoHS compliant and REACH affected, meeting current regulatory requirements. The original 51866-037 is RoHS non-compliant. For applications subject to RoHS or REACH regulations, the 51866-037LF is the appropriate selection.

Packaging: The 51866-037LF is supplied in tray packaging, which is standard for active production components and facilitates automated assembly processes.

Both parts share identical electrical performance, mechanical dimensions, contact configuration, and thermal operating range. Selection between them should be based on regulatory compliance requirements and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Are the 51866-037 and 51866-037LF electrically interchangeable?

A: Yes. Both parts are identical in electrical performance, contact configuration, pitch, number of positions, and operating temperature range. They can be used interchangeably in applications where the connector specification calls for a 20-position PwrBlade® receptacle with 12 signal and 8 power contacts.

Q: What is the difference between the 51866-037 and 51866-037LF?

A: The primary differences are product status, compliance certification, and packaging. The 51866-037LF is an active product with RoHS compliance and tray packaging, while the 51866-037 is obsolete and RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Can I use the 51866-037LF as a direct replacement in existing designs?

A: Yes. The 51866-037LF maintains full mechanical and electrical compatibility with the 51866-037. No design modifications are required for substitution.

Q: Why is the 51866-037 listed as obsolete?

A: The 51866-037 has been superseded by the 51866-037LF, which offers improved compliance status and active manufacturing support. Amphenol ICC has transitioned production to the LF variant.

Q: What does the "LF" designation in 51866-037LF indicate?

A: The "LF" suffix indicates lead-free and RoHS-compliant manufacturing. This variant meets current environmental and regulatory standards for electronic components.

Q: Are there any mechanical differences in mounting or board layout between these parts?

A: No. Both parts feature identical board edge, through-hole, right-angle mounting configurations. PCB footprints and mounting hole patterns are identical.

Q: What is the contact finish specification for both parts?

A: Both parts feature gold or gold GXT™ contact finish with a thickness of 30.0µin (0.76µm), ensuring consistent electrical performance and corrosion resistance.