ARJM11D7-577-AD-ER2-T RJ45 Modular Connector Equivalent & Substitute Parts

Part Overview

The ARJM11D7-577-AD-ER2-T is a 1-port RJ45 through-hole modular connector manufactured by Abracon LLC, designed for 10/100/1000 Base-T Ethernet applications with AutoMDIX support. This connector features a 90° right-angle orientation, board lock mechanism, and shielded construction with gold-plated contacts. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ARJM11D7-577-AD-ER2-T

Abracon LLCIn Stock: 830ARJM11D7-577-AD-ER2-T Datasheet

Current PartRFQ

ARJM11D7-502-AB-ER2-T

Abracon LLCIn Stock: 776ARJM11D7-502-AB-ER2-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ARJM11D7-577-AD-ER2-T is determined by strict equivalence across the following critical parameters:

• Connector Type: RJ45 (8-core jack configuration)
• Mounting Method: Through-hole PCB termination
• Mechanical Orientation: 90° right-angle with identical height above board (13.80mm)
• Electrical Performance: 10/100/1000 Base-T with AutoMDIX capability
• Shielding: Shielded construction for EMI protection
• Contact System: Gold-plated finish with 6.00µin thickness
• Mechanical Features: Board lock retention mechanism
• Environmental Compliance: ROHS3 and REACH compliance maintained

The ARJM11D7-502-AB-ER2-T qualifies as a direct substitute based on identical alignment across all mechanical, electrical, and environmental parameters. The only variance is the LED indicator color specification, which does not affect functional compatibility or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The ARJM11D7-502-AB-ER2-T is the qualified substitute for the obsolete ARJM11D7-577-AD-ER2-T. Selection is based on:

• Full mechanical and electrical parameter equivalence across all critical specifications
• Active product status ensuring continued availability and supply chain support
• Maintained ROHS3 and REACH compliance certifications
• Identical operating temperature range and environmental ratings
• Preserved board lock feature and shielded construction for PCB integration

The LED indicator color difference (Green-Yellow versus Green-Orange) represents a cosmetic variation that does not impact electrical performance, signal integrity, or functional compatibility in 10/100/1000 Base-T Ethernet applications.

Frequently Asked Questions (FAQ)

Q: Can the ARJM11D7-502-AB-ER2-T be used as a direct replacement for the ARJM11D7-577-AD-ER2-T in existing designs?

A: Yes. Both connectors share identical mechanical dimensions, electrical specifications, mounting requirements, and environmental ratings. PCB layouts and circuit designs require no modification.

Q: What is the significance of the LED color difference between these two parts?

A: LED color is a visual indicator only and does not affect electrical performance, impedance, signal transmission, or compatibility with Ethernet protocols. The substitution is electrically transparent.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance, REACH status, and MSL ratings. Regulatory and environmental certifications are equivalent.

Q: Why is the original part listed as obsolete?

A: Product obsolescence is determined by the manufacturer and typically reflects end-of-life decisions. The ARJM11D7-502-AB-ER2-T remains in active production and provides functional continuity for applications previously using the obsolete variant.

Q: Are the mechanical footprints identical for PCB layout purposes?

A: Yes. Both connectors have identical height above board (13.80mm), orientation (90° right-angle), and through-hole mounting configuration. No PCB redesign is necessary.

Q: What is the board lock feature and does it function identically on both parts?

A: The board lock is a mechanical retention mechanism that secures the connector to the PCB during assembly and operation. Both parts incorporate this feature identically.