Amphenol ICC 51732-003 Backplane Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51732-003 is a 36-position backplane connector header featuring male pins and blades configured for board edge, through-hole, right-angle mounting. This connector is part of the PwrBlade® series and combines 28 signal contacts with 8 power contacts in a 4-row configuration with 0.100" (2.54mm) pitch spacing. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

51732-003

Amphenol ICC (FCI)In Stock: 108851732-003 Datasheet

Current PartRFQ

51732-003LF

Amphenol ICC (FCI)In Stock: 94351732-003LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the 51732-003 is determined by strict adherence to the following electrical and mechanical parameters:

• Connector Type & Style: Header with male pins and blades, blade power configuration
• Position Count & Layout: 36 total positions with 28 signal and 8 power contacts
• Pitch Spacing: 0.100" (2.54mm) standard spacing
• Row Configuration: 4-row arrangement
• Mounting Method: Board edge, through-hole, right-angle orientation
• Termination Method: Solder termination
• Contact Finish Specification: Gold or Gold, GXT™ with 30.0µin (0.76µm) thickness
• Physical Color: Black housing
• Thermal & Environmental Ratings: UL94 V-0 flammability, -20°C to 105°C operating range, MSL 1

The substitute part 51732-003LF maintains identical electrical and mechanical specifications while offering improved compliance status and alternative packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 51732-003LF serves as the direct functional equivalent to the obsolete 51732-003. Both parts maintain identical electrical and mechanical specifications across all critical parameters including position count, pitch, contact layout, mounting configuration, and thermal ratings.

The primary distinction between these parts is product lifecycle status and regulatory compliance. The 51732-003LF is classified as active and RoHS compliant, whereas the original 51732-003 is obsolete and RoHS non-compliant. For new designs or systems requiring ongoing component availability, the 51732-003LF is the appropriate selection. The substitute part is supplied in tray packaging, which may differ from the original part's packaging configuration.

Both parts share identical contact finish specifications, flammability ratings, and environmental operating parameters, ensuring functional interchangeability in applications where the 51732-003 was originally specified.

Frequently Asked Questions (FAQ)

Q: Are the 51732-003 and 51732-003LF electrically interchangeable?

A: Yes. Both parts maintain identical electrical specifications including 36-position configuration, 28 signal and 8 power contact layout, 0.100" pitch spacing, gold contact finish with 30.0µin thickness, and UL94 V-0 flammability rating.

Q: What is the primary reason to substitute the 51732-003 with 51732-003LF?

A: The 51732-003 is classified as obsolete, making long-term availability uncertain. The 51732-003LF is an active product from the same manufacturer and series, ensuring continued supply and support. Additionally, the 51732-003LF is RoHS compliant, whereas the original part is not.

Q: Are there mechanical differences between these connectors?

A: No. Both parts feature identical mounting configuration (board edge, through-hole, right-angle), 4-row arrangement, black housing color, and solder termination method.

Q: Does the packaging difference affect compatibility?

A: Packaging differences do not affect electrical or mechanical compatibility. The 51732-003LF is supplied in tray packaging. Verify that your procurement and assembly processes accommodate the specified packaging format.

Q: Can the 51732-003LF be used in existing designs originally specified for the 51732-003?

A: Yes. The 51732-003LF is a direct substitute with identical form, fit, and function. No design modifications are required for PCB layout, mating connector selection, or electrical circuit implementation.

Q: What is the operating temperature range for both parts?

A: Both the 51732-003 and 51732-003LF operate across the temperature range of -20°C to 105°C with MSL 1 (unlimited moisture sensitivity level).