Amphenol ICC 50003-1256H High Density Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 50003-1256H is a 256-position high-density backplane connector featuring female sockets in a through-hole, right-angle configuration. This receptacle connector is part of the HPC™ series and utilizes a 0.100" (2.54mm) pitch with a 4-row by 64-column layout. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and maintenance applications.

Substiute Parts

50003-1256H

Amphenol ICC (FCI)In Stock: 97450003-1256H Datasheet

Current PartRFQ

50003-1256HLF

Amphenol ICC (FCI)In Stock: 84850003-1256HLF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 50003-1256H is determined by strict equivalence across the following critical parameters:

• Connector Type & Style: Receptacle with female sockets in high-density configuration
• Electrical Interface: 256 positions at 0.100" (2.54mm) pitch
• Physical Layout: 4-row by 64-column arrangement
• Mounting Configuration: Through-hole, right-angle orientation
• Termination Method: Solder attachment
• Contact Properties: Gold finish at specified thickness
• Series Compatibility: HPC™ series designation

The substitute part 50003-1256HLF meets all these criteria while offering the additional advantage of active product status and RoHS compliance, making it a direct functional equivalent suitable for new designs and component replacement scenarios.

Parameter Comparison

Engineering Selection Recommendations

The 50003-1256HLF is the direct equivalent for the obsolete 50003-1256H. Selection of the substitute part is justified on the following engineering grounds:

Product Status: The original part is classified as obsolete, creating supply chain risk. The substitute maintains active product status with confirmed inventory availability (820 pcs in stock), ensuring reliable procurement for current and future applications.

Regulatory Compliance: The substitute part is RoHS compliant, meeting current environmental and regulatory requirements for electronic components in most jurisdictions. The original part's non-compliant status may restrict its use in new designs or regulated markets.

Functional Equivalence: All critical electrical and mechanical parameters are identical between the two parts, including connector type, position count, pitch, mounting configuration, and contact specifications. This ensures direct interchangeability without design modification.

Certification & Standards: Both parts carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications, confirming equivalent trade and export status.

Frequently Asked Questions (FAQ)

Q: Can the 50003-1256HLF be used as a direct replacement for the 50003-1256H in existing designs?

A: Yes. The substitute part is functionally identical across all specified electrical and mechanical parameters. No design changes are required for PCB layout, mating connector specifications, or signal integrity considerations.

Q: What is the primary difference between these two parts?

A: The 50003-1256HLF is the active production equivalent with RoHS compliance, while the 50003-1256H is obsolete and non-compliant. The "LF" designation in the substitute part number indicates lead-free and RoHS-compliant manufacturing.

Q: Are there any compatibility concerns with mating connectors?

A: No. Both parts use identical pitch (0.100"), position count (256), and row/column configuration (4×64). Any connector designed to mate with the 50003-1256H will mate with the 50003-1256HLF without modification.

Q: What is the MSL rating, and does it affect storage or handling?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage practices for electronic components apply; no special moisture-control measures are required.

Q: Is the contact finish specification identical between the two parts?

A: Yes. Both parts feature gold-plated contacts with a thickness of 30.0µin (0.76µm), ensuring equivalent electrical performance and corrosion resistance.

Q: Can I mix the 50003-1256H and 50003-1256HLF in the same assembly?

A: While electrically and mechanically compatible, mixing obsolete and active parts in production is not recommended. Standardize on the 50003-1256HLF for all new builds and maintenance stock to simplify inventory management and ensure long-term supply continuity.