50003-1320E Equivalent & Substitute Parts

Part Overview

The 50003-1320E is a 320-position high-density backplane connector receptacle manufactured by Amphenol ICC (FCI). This component is a female socket connector designed for through-hole, right-angle PCB mounting with solder termination. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

50003-1320E

Amphenol ICC (FCI)In Stock: 95850003-1320E Datasheet

Current PartRFQ

50003-1320ELF

Amphenol ICC (FCI)In Stock: 75250003-1320ELF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 50003-1320E is determined by strict equivalence across the following critical parameters:

• Connector Type & Style: Must be receptacle with female sockets in high-density configuration
• Position Count & Layout: Exactly 320 positions in 4×80 row-column arrangement
• Pitch & Spacing: 0.100" (2.54mm) pitch maintained
• Mounting & Termination: Through-hole, right-angle orientation with solder termination
• Contact System: Gold-plated contacts with identical finish thickness
• Mechanical Features: Mating guide inclusion

The 50003-1320ELF meets all these criteria as a direct functional equivalent. The primary distinction is product status: the original part is obsolete, while the substitute is active in production, ensuring ongoing availability and compliance with current manufacturing standards.

Parameter Comparison

Engineering Selection Recommendations

The 50003-1320ELF is the direct substitute for the obsolete 50003-1320E. Selection of the substitute is based on the following engineering factors:

Product Status: The 50003-1320E is obsolete and no longer manufactured. The 50003-1320ELF is an active production part from the same manufacturer and series, ensuring supply chain continuity.

Regulatory Compliance: The substitute part is RoHS compliant, whereas the original part is RoHS non-compliant. For applications subject to RoHS regulations or requiring compliance with current environmental standards, the 50003-1320ELF is the appropriate choice.

Functional Equivalence: All electrical and mechanical parameters are identical between the two parts. The connector maintains the same 320-position high-density configuration, pitch, mounting orientation, termination method, and contact finish specifications. No design modifications are required for direct substitution.

Availability: The 50003-1320ELF has confirmed inventory availability (662 pcs new original in stock), whereas the 50003-1320E, though currently in stock (865 pcs), is no longer produced and represents finite legacy inventory.

Frequently Asked Questions (FAQ)

Q: Can the 50003-1320ELF be used as a direct replacement for the 50003-1320E in existing designs?

A: Yes. The 50003-1320ELF is a direct functional equivalent. All connector parameters—position count, pitch, mounting type, termination method, and contact specifications—are identical. No PCB layout or mating connector modifications are required.

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

A: The primary differences are product status and RoHS compliance. The 50003-1320E is obsolete and RoHS non-compliant. The 50003-1320ELF is an active production part that meets RoHS requirements. The "LF" suffix in the substitute part number indicates lead-free and RoHS compliance.

Q: Are there any mechanical or electrical differences that would affect PCB design?

A: No. Both parts are 320-position, high-density receptacles with 0.100" (2.54mm) pitch, 4×80 row-column configuration, through-hole right-angle mounting, and solder termination. Footprint and electrical performance are identical.

Q: What is the MSL rating for the 50003-1320ELF?

A: The moisture sensitivity level is MSL 1 (Unlimited), identical to the original part. This indicates the component has no moisture sensitivity restrictions and requires no special handling or storage conditions.

Q: Are both parts classified under the same export control category?

A: Yes. Both the 50003-1320E and 50003-1320ELF are classified as ECCN EAR99 and HTSUS 8536.69.4040, indicating identical export control and tariff classification.

Q: Should new designs use the 50003-1320ELF instead of the 50003-1320E?

A: Yes. For all new production designs, the 50003-1320ELF is the appropriate choice due to its active production status and RoHS compliance. The 50003-1320E should be reserved for legacy system maintenance only, as long as inventory permits.