Amphenol ICC 51776-003 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51776-003 is a 30-position receptacle connector featuring female sockets and blade sockets, designed for board edge, through-hole, right-angle mounting applications. This connector is part of the PwrBlade® series and provides a contact layout of 24 signal and 6 power positions with gold-plated contacts rated for -20°C to 105°C operation.

The 51776-003 is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this connector.

Substiute Parts

51776-003

Amphenol ICC (FCI)In Stock: 85151776-003 Datasheet

Current PartRFQ

51776-003LF

Amphenol ICC (FCI)In Stock: 91451776-003LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51776-003 is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets and blade sockets
• Connector style: Blade Power
• Number of positions: 30
• Pitch: 0.100" (2.54mm)
• Number of rows: 4
• Mounting type: Board edge, through-hole, right-angle configuration
• Termination method: Solder
• Contact layout: 24 signal, 6 power positions
• Contact finish: Gold or Gold, GXT™
• Contact finish thickness: 30.0µin (0.76µm)
• Color: Black
• Material flammability rating: UL94 V-0
• Operating temperature range: -20°C to 105°C
• Moisture sensitivity level: 1 (Unlimited)

The substitute part 51776-003LF maintains identical electrical and mechanical specifications while differing in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The 51776-003LF is the direct substitute for the obsolete 51776-003. Both connectors are electrically and mechanically identical across all specified parameters. The primary distinctions are:

The 51776-003LF carries active product status, ensuring ongoing manufacturer support and availability. The 51776-003 is classified as obsolete and should not be selected for new designs or long-term supply requirements.

The 51776-003LF is RoHS compliant, meeting current regulatory requirements for electronic component manufacturing and end-of-life management. The 51776-003 is RoHS non-compliant and may present compliance challenges in regulated markets.

The 51776-003LF is designated as REACH Affected, indicating compliance with European chemical safety regulations. This status is not specified for the 51776-003.

For applications currently using the 51776-003, transition to the 51776-003LF is supported by identical electrical and mechanical specifications. No design modifications are required.

Frequently Asked Questions (FAQ)

Q: Are the 51776-003 and 51776-003LF electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including connector type, number of positions, pitch, contact layout (24 signal, 6 power), contact finish, and operating temperature range (-20°C to 105°C).

Q: Are the 51776-003 and 51776-003LF mechanically interchangeable?

A: Yes. Both connectors feature identical mechanical specifications including 30 positions, 4 rows, 0.100" (2.54mm) pitch, board edge through-hole right-angle mounting, and solder termination.

Q: Why is the 51776-003 obsolete?

A: The 51776-003 is classified as obsolete by the manufacturer. The 51776-003LF is the active equivalent and should be used for all new designs and ongoing supply requirements.

Q: What is the difference between the packaging of these connectors?

A: The 51776-003 packaging is not specified. The 51776-003LF is supplied in tray packaging.

Q: Does the 51776-003LF meet RoHS requirements?

A: Yes. The 51776-003LF is RoHS compliant. The 51776-003 is RoHS non-compliant.

Q: What is the REACH status of these connectors?

A: The 51776-003LF is designated as REACH Affected. The REACH status of the 51776-003 is not specified.

Q: Can I use the 51776-003LF as a direct replacement in existing applications?

A: Yes. The 51776-003LF is a direct substitute for the 51776-003 with no design modifications required. All electrical and mechanical parameters are identical.