Amphenol ICC 51940-101 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51940-101 is a 35-position backplane receptacle connector featuring female sockets and blade sockets for through-hole PCB mounting. This connector is part of the PwrBlade® series and combines 20 signal contacts with 15 power contacts in a 4-row configuration with 0.100" pitch spacing.

The 51940-101 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and maintenance requirements for systems utilizing this connector.

Substiute Parts

51940-101

Amphenol ICC (FCI)In Stock: 68651940-101 Datasheet

Current PartRFQ

51940-101LF

Amphenol ICC (FCI)In Stock: 96451940-101LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 51940-101 is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets and blade sockets
• Number of positions: 35
• Contact layout: 20 signal, 15 power
• Pitch spacing: 0.100" (2.54mm)
• Number of rows: 4
• Mounting method: Through hole
• Termination method: Solder
• Contact finish specification: 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
• Guide pin feature: Present

The substitute part 51940-101LF meets all these criteria and is therefore electrically and mechanically interchangeable with the 51940-101.

Parameter Comparison

Engineering Selection Recommendations

The 51940-101LF is the direct substitute for the obsolete 51940-101. Both parts are electrically and mechanically identical across all specified parameters.

The 51940-101LF offers the additional advantage of active product status, ensuring ongoing manufacturer support and availability. The 51940-101LF also carries RoHS compliance and REACH compliance status, meeting current regulatory requirements for new designs and production environments.

For applications requiring the 51940-101, the 51940-101LF provides equivalent functionality with improved compliance posture and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Are the 51940-101 and 51940-101LF electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including connector type, position count, contact layout (20 signal, 15 power), pitch spacing, contact finish, and operating temperature range.

Q: Are the 51940-101 and 51940-101LF mechanically interchangeable?

A: Yes. Both parts have identical mechanical specifications including mounting type (through hole), number of rows (4), color (black), and guide pin feature.

Q: What is the difference between these two parts?

A: The primary differences are product status and regulatory compliance. The 51940-101 is obsolete and RoHS non-compliant. The 51940-101LF is active, RoHS compliant, and REACH compliant. Packaging differs: 51940-101LF is supplied in trays.

Q: Can I use 51940-101LF as a replacement for 51940-101 in existing designs?

A: Yes. The 51940-101LF is a direct substitute with identical electrical and mechanical specifications. No design changes are required.

Q: What does the "LF" designation indicate?

A: The "LF" suffix typically indicates lead-free and RoHS compliance in Amphenol ICC part numbering conventions.

Q: Are there any other substitute parts available?

A: Based on the provided data, 51940-101LF is the identified substitute for 51940-101.