ARJM11B1-007-KB-ER4-T RJ45 Modular Connector Equivalent & Substitute Parts

Part Overview

The ARJM11B1-007-KB-ER4-T is a 1-port RJ45 through-hole modular connector manufactured by Abracon LLC, designed for 10/100 Base-T Ethernet applications with AutoMDIX capability. This connector features a 90° right-angle orientation, board lock mechanism, and dual LED indicators (green and orange-yellow). The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and legacy system support.

Substiute Parts

ARJM11B1-007-KB-ER4-T

Abracon LLCIn Stock: 951ARJM11B1-007-KB-ER4-T Datasheet

Current PartRFQ

ARJM11B1-009-KB-ER2-T

Abracon LLCIn Stock: 1156ARJM11B1-009-KB-ER2-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJM11B1-007-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)
• Applications: 10/100 Base-T, AutoMDIX
• Height Above Board: 0.535" (14.69mm)
• Shielding: Shielded
• Features: Board Lock
• Operating Temperature Range: -40°C ~ 85°C
• RoHS Status: ROHS3 Compliant

The ARJM11B1-009-KB-ER2-T qualifies as a direct substitute because it maintains identical values across all mandatory parameters. Both connectors belong to the ARJM11 series and are manufactured by Abracon LLC. The substitute part is currently in active production status, providing supply continuity for the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

The ARJM11B1-009-KB-ER2-T is the qualified substitute for the obsolete ARJM11B1-007-KB-ER4-T. Both parts maintain full compliance with ROHS3 and REACH regulations, ensuring regulatory continuity. The substitute part is in active production status, providing assured supply availability and manufacturing support.

The primary difference between the original and substitute is the contact finish thickness: the original specifies 30.0µin (0.76µm) while the substitute specifies 6.00µin (0.152µm). Both gold contact finishes meet the electrical and mechanical requirements for 10/100 Base-T Ethernet applications. The reduced finish thickness in the substitute part reflects current manufacturing standards within the ARJM11 series while maintaining functional equivalence.

Selection of the ARJM11B1-009-KB-ER2-T ensures design compatibility, regulatory compliance, and supply chain continuity for applications requiring 1-port RJ45 through-hole connectors with 90° right-angle orientation and board lock features.

Frequently Asked Questions (FAQ)

Q: Can the ARJM11B1-009-KB-ER2-T be used as a direct replacement for the ARJM11B1-007-KB-ER4-T?

A: Yes. Both connectors are functionally equivalent across all critical parameters including connector type, port configuration, mounting method, orientation, height, applications, shielding, and operating temperature range. The substitute part is currently in active production.

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

A: The primary difference is the contact finish thickness. The original part specifies 30.0µin (0.76µm) gold plating, while the substitute specifies 6.00µin (0.152µm). Both finishes are gold and meet the electrical requirements for 10/100 Base-T Ethernet connectivity. The difference reflects manufacturing process updates within the ARJM11 series.

Q: Are there any compliance or regulatory differences?

A: No. Both parts maintain identical ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity ratings. Regulatory requirements are fully satisfied by either part.

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both connectors share identical mounting specifications: through-hole termination, 90° right-angle orientation, 0.535" (14.69mm) height above board, and board lock features. PCB layout and footprint compatibility is maintained.

Q: Why is the original part obsolete?

A: The ARJM11B1-007-KB-ER4-T has been discontinued by the manufacturer. The ARJM11B1-009-KB-ER2-T represents the current active equivalent within the ARJM11 series and is the recommended part for new designs and legacy system support.