Amphenol ICC 73304-111 Modular Connector RJ45 Jack — Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 73304-111 is a modular jack connector with 8 positions/8 contacts (RJ45, Ethernet) configured for 90° right-angle surface mount termination. This unshielded Cat3-rated connector features solder retention and phosphor bronze contacts with gold finish. The part is currently listed as obsolete, making identification of functional equivalents essential for ongoing design support and component procurement.

Substiute Parts

73304-111

Amphenol ICC (FCI)In Stock: 114273304-111 Datasheet

Current PartRFQ

73304-111LF

Amphenol ICC (FCI)In Stock: 217073304-111LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 73304-111 is determined by strict equivalence across the following critical parameters:

• Connector type (Jack)
• Contact configuration (8p8c RJ45 Ethernet)
• Mounting method (Surface Mount)
• Mechanical orientation (90° right angle)
• Termination method (Solder)
• Shielding classification (Unshielded)
• Electrical rating (Cat3)
• Contact material and finish specifications (Phosphor Bronze, Gold GXT™)

The substitute part 73304-111LF maintains identical electrical and mechanical specifications across all these parameters, differing only in packaging format and housing material composition, which do not affect functional compatibility in the connector interface.

Parameter Comparison

Engineering Selection Recommendations

The 73304-111LF is the direct functional equivalent for the obsolete 73304-111. Both parts maintain identical electrical and mechanical interface specifications, ensuring pin-for-pin compatibility and interchangeability in circuit board layouts.

The 73304-111LF offers the following advantages for new designs and ongoing production:

• Active product status with confirmed inventory availability (2123 pcs in stock)
• RoHS compliance certification, meeting current regulatory requirements
• Housing material upgrade to PCT (Polycyclohexylenedimethylene Terephthalate), providing improved thermal and chemical resistance compared to standard polyamide
• Tape & Reel packaging format suitable for automated assembly processes

The operating temperature range of the 73304-111LF (-50°C ~ 50°C) is slightly narrower than the original part (-50°C ~ 55°C). This difference must be evaluated against specific application requirements. For applications requiring operation above 50°C, the original 73304-111 specifications should be confirmed with the manufacturer or alternative solutions assessed.

Frequently Asked Questions (FAQ)

Q: Can the 73304-111LF be used as a direct replacement for the 73304-111 in existing designs?

A: Yes. Both parts share identical connector type, contact configuration (8p8c RJ45), mounting method (surface mount 90° right angle), termination (solder), shielding (unshielded), and electrical rating (Cat3). The interface is fully compatible. Verify that your application's maximum operating temperature does not exceed 50°C, as the substitute part has a slightly lower upper temperature limit.

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

A: The primary differences are product status, compliance certification, and packaging. The 73304-111LF is an active product with RoHS compliance and uses PCT housing material instead of polyamide. The "LF" suffix typically indicates lead-free and RoHS-compliant variants in Amphenol ICC product lines.

Q: Are there any compatibility concerns with PCB layout or footprint?

A: No. Both parts are surface mount connectors with identical mechanical orientation (90° right angle) and tab direction (up). PCB footprints and mounting requirements are equivalent.

Q: What is the significance of the housing material change from polyamide to PCT?

A: PCT (Polycyclohexylenedimethylene Terephthalate) offers superior thermal stability and chemical resistance compared to polyamide (PA/Nylon). This material upgrade enhances connector durability in demanding environments without affecting electrical or mechanical interface specifications.

Q: Does the Tape & Reel packaging affect component performance?

A: No. Tape & Reel is a packaging and delivery format for automated assembly processes. It does not alter the electrical or mechanical characteristics of the connector itself. The component performance remains identical to bulk-packaged versions.

Q: Why is the operating temperature range different?

A: The 73304-111LF operates from -50°C to 50°C, while the original 73304-111 extends to 55°C. This reflects material and design refinements in the newer product. For applications requiring operation above 50°C, confirm compatibility with Amphenol ICC technical documentation or consider alternative connector solutions.