Amphenol ICC 51740-10402002AA Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51740-10402002AA is a 26-position blade power receptacle connector from the PwrBlade® series, designed for through-hole PCB mounting with solder termination. This connector features female sockets and blade sockets configured for 20 signal and 6 power contacts. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

51740-10402002AA

Amphenol ICC (FCI)In Stock: 92651740-10402002AA Datasheet

Current PartRFQ

51740-10402002AALF

Amphenol ICC (FCI)In Stock: 85951740-10402002AALF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51740-10402002AA is determined by strict equivalence across the following critical parameters:

• Connector type and style (Receptacle, Female Sockets and Blade Sockets, Blade Power)
• Number of positions and contact layout (26 positions, 20 Signal / 6 Power)
• Pitch and row configuration (0.100" / 2.54mm, 4 rows)
• Mounting and termination method (Through Hole, Solder)
• Contact finish specification (Gold or Gold, GXT™, 30.0µin thickness)
• Environmental ratings (UL94 V-0, -20°C to 105°C operating range, MSL 1)

The substitute part 51740-10402002AALF maintains identical electrical and mechanical specifications while differing in product status and compliance certifications. The primary distinction is packaging format and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The 51740-10402002AALF is the direct functional equivalent of the 51740-10402002AA. Both connectors are electrically and mechanically identical across all specified parameters. Selection between these parts should be based on the following criteria:

For new designs and ongoing production: The 51740-10402002AALF is the appropriate choice. This part carries Active product status, ensuring long-term availability and manufacturer support. It meets RoHS compliance requirements and is REACH-affected, aligning with current regulatory standards for electronic components.

For legacy system support: The 51740-10402002AA remains available in inventory (877 pieces) for applications requiring the original obsolete part number. However, transition to the 51740-10402002AALF is recommended where system design permits, as the obsolete designation indicates limited future availability.

Both parts share identical electrical performance, mechanical dimensions, contact specifications, and environmental ratings. The choice between them is determined by regulatory compliance requirements and product lifecycle considerations rather than functional capability.

Frequently Asked Questions (FAQ)

Q: Are the 51740-10402002AA and 51740-10402002AALF electrically interchangeable?

A: Yes. Both connectors feature identical contact configurations (26 positions, 20 signal / 6 power), pitch (0.100" / 2.54mm), contact finish (Gold or Gold, GXT™), and operating specifications (-20°C to 105°C, UL94 V-0). They are direct electrical equivalents.

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

A: The primary differences are product status and regulatory compliance. The 51740-10402002AA is classified as obsolete, while the 51740-10402002AALF is active. The substitute part is RoHS compliant and REACH-affected, whereas the main part is RoHS non-compliant. Packaging differs: the substitute is supplied in trays.

Q: Can I use the 51740-10402002AALF as a direct replacement for the 51740-10402002AA in existing designs?

A: Yes. The connectors are mechanically and electrically identical. PCB footprints, mating interfaces, and electrical performance are equivalent. The tray packaging of the substitute part does not affect component functionality.

Q: Why is the 51740-10402002AA marked as obsolete?

A: Obsolete designation indicates the manufacturer has discontinued active production and support. The 51740-10402002AALF represents the current active equivalent within the PwrBlade® series.

Q: Are there any compliance considerations when switching from the main part to the substitute?

A: Yes. The 51740-10402002AALF is RoHS compliant and REACH-affected, meeting current regulatory requirements. If your application or region requires RoHS compliance, the substitute part is the appropriate selection.

Q: What is the contact finish thickness specification, and is it identical between both parts?

A: Both connectors specify 30.0µin (0.76µm) contact finish thickness. This specification is identical and ensures equivalent electrical and mechanical performance.

Q: How does the MSL (Moisture Sensitivity Level) rating affect storage and handling?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard component storage practices apply; no special moisture control measures are required.