ARJM11D7-809-KB-ER4-T RJ45 Modular Connector Equivalent & Substitute Parts

Part Overview

The ARJM11D7-809-KB-ER4-T is a 1-port RJ45 through-hole modular connector manufactured by Abracon LLC, designed for 2.5G Base-T Ethernet applications with AutoMDIX functionality. This connector features a 90° right-angle orientation, solder termination, and integrated board lock mechanism with dual LED indicators (green and orange-yellow). The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ARJM11D7-809-KB-ER4-T

Abracon LLCIn Stock: 768ARJM11D7-809-KB-ER4-T Datasheet

Current PartRFQ

ARJM11D7-809-KB-ER2-T

Abracon LLCIn Stock: 973ARJM11D7-809-KB-ER2-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJM11D7-809-KB-ER4-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: RJ45
• Number of Ports: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Height Above Board: 0.543" (13.80mm)
• Number of Cores per Jack: 8
• Shielding: Shielded
• Features: Board Lock
• Operating Temperature Range: -40°C to 85°C
• RoHS Compliance: ROHS3 Compliant

The ARJM11D7-809-KB-ER2-T meets all mandatory substitution criteria. Both connectors are members of the ARJM11 series and share identical mechanical, electrical, and environmental specifications. The primary difference lies in contact finish thickness (30.0µin versus 6.00µin), which does not affect functional compatibility or performance in 2.5G Base-T applications.

Parameter Comparison

Engineering Selection Recommendations

The ARJM11D7-809-KB-ER2-T is the direct functional equivalent for the obsolete ARJM11D7-809-KB-ER4-T. Selection of the substitute part is supported by:

Product Status: The substitute part maintains active product status with Abracon LLC, ensuring continued availability and manufacturer support. The main part is obsolete, making the substitute the appropriate choice for new designs and ongoing procurement.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for electronic component deployment.

Certifications and Environmental Ratings: Both connectors share identical moisture sensitivity level (MSL 1) and operating temperature specifications (-40°C to 85°C), confirming environmental equivalence across all specified conditions.

Mechanical and Electrical Compatibility: Identical mechanical footprint, pin configuration, and electrical specifications ensure direct PCB-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the ARJM11D7-809-KB-ER2-T be used as a direct replacement for the ARJM11D7-809-KB-ER4-T?

A: Yes. Both connectors are mechanically and electrically equivalent. They share identical mounting type, orientation, pin count, shielding, and operating specifications. The substitute part is currently in active production status.

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

A: The primary difference is contact finish thickness. The ARJM11D7-809-KB-ER4-T specifies 30.0µin (0.76µm) gold plating, while the ARJM11D7-809-KB-ER2-T specifies 6.00µin (0.152µm). Both thicknesses meet gold contact finish standards for RJ45 connectors and do not affect functional performance in 2.5G Base-T applications.

Q: Are there any PCB layout or design changes required when switching to the substitute part?

A: No. The substitute part maintains identical height above board (0.543" / 13.80mm), footprint, and through-hole termination specifications. Existing PCB designs require no modification.

Q: What is the availability status of each part?

A: The ARJM11D7-809-KB-ER4-T is obsolete with 719 units in current inventory. The ARJM11D7-809-KB-ER2-T is active production with 922 units in current inventory, providing superior long-term availability.

Q: Do both parts meet the same regulatory and environmental standards?

A: Yes. Both connectors are ROHS3 compliant, REACH unaffected, and rated for identical operating temperature ranges (-40°C to 85°C) and moisture sensitivity levels (MSL 1).