Amphenol ICC 51772-003 Backplane Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51772-003 is a 36-position receptacle connector featuring female sockets and blade sockets for board edge, through-hole, right-angle mounting. This connector is part of the PwrBlade® series and provides a contact layout of 28 signal and 8 power positions with gold-plated contacts rated for -20°C to 105°C operation.

The 51772-003 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance where this connector type remains in use.

Substiute Parts

51772-003

Amphenol ICC (FCI)In Stock: 96651772-003 Datasheet

Current PartRFQ

51772-003LF

Amphenol ICC (FCI)In Stock: 121951772-003LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51772-003 is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets and blade sockets
• Position count: 36 positions
• Pitch specification: 0.100" (2.54mm)
• Row configuration: 4 rows
• Mounting method: Board edge, through-hole, right-angle orientation
• Contact layout: 28 signal and 8 power positions
• Contact finish and thickness: Gold or Gold, GXT™ at 30.0µin (0.76µm)
• Operating temperature range: -20°C to 105°C
• Flammability rating: UL94 V-0

The substitute part 51772-003LF maintains identical electrical and mechanical specifications while offering active product status and improved compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 51772-003LF is the direct substitute for the obsolete 51772-003. Both parts share identical electrical and mechanical specifications, ensuring functional compatibility in existing designs.

The primary distinction between these parts is product lifecycle status and regulatory compliance. The 51772-003 is obsolete and RoHS non-compliant, while the 51772-003LF maintains active product status and achieves RoHS compliance. The 51772-003LF also carries REACH Affected designation.

For new designs or system refreshes, the 51772-003LF is the appropriate selection. For legacy system support where the original 51772-003 is specified, the 51772-003LF provides direct functional equivalence with improved compliance posture.

Frequently Asked Questions (FAQ)

Q: Can the 51772-003LF be used as a direct replacement for the 51772-003?

A: Yes. The 51772-003LF maintains identical connector type, position count, pitch, mounting configuration, contact layout, and operating temperature range. Both parts are manufactured by Amphenol ICC within the PwrBlade® series and share the same electrical and mechanical interface specifications.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and compliance. The 51772-003 is obsolete and RoHS non-compliant. The 51772-003LF is active and RoHS compliant. The 51772-003LF is also packaged in trays, whereas packaging information for the 51772-003 is not specified.

Q: Are there any compatibility concerns when substituting the 51772-003 with the 51772-003LF?

A: No compatibility concerns exist. Both parts conform to the same electrical and mechanical specifications, including contact finish, flammability rating, and operating temperature range.

Q: Which part should be specified for new designs?

A: The 51772-003LF should be specified for new designs. It offers active product status, RoHS compliance, and ensures long-term supply chain availability.

Q: Is the 51772-003LF suitable for legacy system maintenance?

A: Yes. The 51772-003LF provides direct functional equivalence to the obsolete 51772-003 and is suitable for replacement in legacy systems requiring this connector type.