Amphenol ICC 51752-021 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51752-021 is a 29-position backplane connector receptacle featuring female sockets and blade sockets for through-hole PCB mounting. This connector is part of the PwrBlade® series and is designed for applications requiring blade power distribution with integrated signal contacts. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

51752-021

Amphenol ICC (FCI)In Stock: 107451752-021 Datasheet

Current PartRFQ

51752-021LF

Amphenol ICC (FCI)In Stock: 75551752-021LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51752-021 is determined by strict equivalence across the following critical parameters:

• Connector Type & Style: Receptacle with female sockets and blade sockets, blade power configuration
• Position Count & Layout: 29 total positions with 24 signal and 5 power contacts
• Pitch & Row Configuration: 0.100" (2.54mm) pitch across 4 rows
• Mounting & Termination: Through-hole PCB mounting with press-fit termination
• Contact Specifications: Gold or Gold GXT™ finish at 30.0µin thickness
• Environmental Ratings: UL94 V-0 flammability, -20°C to 105°C operating range

The substitute part 51752-021LF maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Parameter Comparison

Engineering Selection Recommendations

The 51752-021LF is the direct substitute for the obsolete 51752-021. Both parts are manufactured by Amphenol ICC (FCI) and maintain identical electrical and mechanical specifications across all critical parameters including connector type, position count, pitch, mounting configuration, and contact specifications.

The primary distinction between these parts is product status and regulatory compliance. The 51752-021LF is an active product with RoHS compliance, whereas the 51752-021 is obsolete and RoHS non-compliant. For new designs or ongoing system support where component availability is required, the 51752-021LF is the appropriate selection.

Both parts are rated for identical operating conditions (-20°C to 105°C) and environmental specifications (UL94 V-0, MSL 1). The substitution is direct with no functional or performance trade-offs.

Frequently Asked Questions (FAQ)

Q: Can the 51752-021LF be used as a direct replacement for the 51752-021?

A: Yes. The 51752-021LF is a direct substitute with identical electrical and mechanical specifications. All connector parameters, contact configurations, and environmental ratings are equivalent.

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

A: The primary differences are product status and RoHS compliance. The 51752-021 is obsolete and RoHS non-compliant, while the 51752-021LF is an active product with RoHS compliance. All functional specifications remain identical.

Q: Are there any compatibility concerns when substituting the 51752-021 with the 51752-021LF?

A: No compatibility concerns exist. Both parts share identical connector type, position count, pitch, mounting type, and contact specifications. PCB layouts and mating components designed for the 51752-021 are fully compatible with the 51752-021LF.

Q: What does the "LF" suffix in 51752-021LF indicate?

A: The "LF" suffix typically indicates lead-free or RoHS-compliant variants in Amphenol ICC part numbering. The 51752-021LF maintains the same functional design as the base part while meeting RoHS compliance requirements.

Q: Is the 51752-021LF available in the same packaging as the 51752-021?

A: The 51752-021LF is supplied in Tray packaging. Both parts are manufactured by Amphenol ICC (FCI) and are available through authorized distributors.

Q: What are the key parameters that determine substitution eligibility for this connector?

A: Substitution is determined by equivalence in connector type, number of positions (29), pitch (0.100"), row configuration (4 rows), mounting type (through-hole), termination method (press-fit), contact layout (24 signal, 5 power), and environmental ratings (UL94 V-0, -20°C to 105°C operating range).