Amphenol ICC 51750-044 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51750-044 is a 52-position backplane receptacle connector featuring female sockets and blade sockets for through-hole PCB mounting. This connector is part of the PwrBlade® series and provides a 48 signal, 4 power contact layout with press-fit termination and board lock features. The 51750-044 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

51750-044

Amphenol ICC (FCI)In Stock: 114251750-044 Datasheet

Current PartRFQ

51750-044LF

Amphenol ICC (FCI)In Stock: 114151750-044LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 51750-044 is determined by strict equivalence across the following critical parameters:

• Connector type and socket configuration (Receptacle, Female Sockets and Blade Sockets)
• Position count and arrangement (52 positions, 4 rows)
• Pitch specification (0.100" / 2.54mm)
• Contact layout distribution (48 Signal, 4 Power)
• Mounting and termination method (Through Hole, Press-Fit)
• Contact finish specification (Gold or Gold, GXT™)
• Operating temperature range (-20°C to 105°C)
• Flammability rating (UL94 V-0)

The 51750-044LF meets all these criteria and serves as the direct active equivalent. Substitution is valid only when all parameters remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

The 51750-044LF is the direct active equivalent for the obsolete 51750-044. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the 51750-044 is obsolete while the 51750-044LF is active and currently in production.

For new designs or ongoing procurement, the 51750-044LF is the appropriate selection. This part offers the additional advantage of RoHS compliance, whereas the original 51750-044 is RoHS non-compliant. Both parts are supplied with identical contact finish specifications and operating characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 51750-044LF be used as a direct replacement for the 51750-044?

A: Yes. The 51750-044LF is electrically and mechanically equivalent to the 51750-044 across all specified parameters. The primary difference is product status and RoHS compliance.

Q: What is the difference between the 51750-044 and 51750-044LF?

A: The 51750-044LF is the active production equivalent of the obsolete 51750-044. Both maintain identical connector specifications, contact layout, pitch, and operating temperature range. The 51750-044LF is RoHS compliant, while the 51750-044 is not. Packaging differs: the 51750-044 is supplied in bulk, while the 51750-044LF is supplied in trays.

Q: Are there any compatibility concerns when substituting the 51750-044 with the 51750-044LF?

A: No compatibility concerns exist. Both parts are mechanically and electrically identical in form, fit, and function. PCB layouts, mating connectors, and signal routing remain unchanged.

Q: What is the contact finish specification for these connectors?

A: Both the 51750-044 and 51750-044LF feature gold or gold GXT™ contact finish with a thickness of 30.0µin (0.76µm).

Q: What is the operating temperature range for the 51750-044LF?

A: The operating temperature range is -20°C to 105°C for both the 51750-044 and 51750-044LF.

Q: Is the 51750-044LF RoHS compliant?

A: Yes, the 51750-044LF is RoHS compliant. The original 51750-044 is RoHS non-compliant.