ARJM11A1-577-KB-CW2 Equivalent & Substitute Parts

Part Overview

The ARJM11A1-577-KB-CW2 is a 1 Port RJ45 Through Hole modular connector manufactured by Abracon LLC, designed for 10/100/1000 Base-T Ethernet applications with AutoMDIX capability. This connector features a 90° right-angle orientation, solder termination, and integrated LED indicators (Green, Orange-Yellow). The product is currently classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ARJM11A1-577-KB-CW2

Abracon LLCIn Stock: 1213ARJM11A1-577-KB-CW2 Datasheet

Current PartRFQ

1-2301994-2

TE Connectivity AMP ConnectorsIn Stock: 24531-2301994-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ARJM11A1-577-KB-CW2 is determined by strict equivalence across the following critical parameters:

• Connector Type & Port Configuration: RJ45, single port
• Electrical Application: 10/100/1000 Base-T with AutoMDIX support
• Physical Form Factor: Through Hole mounting, 90° right-angle orientation, solder termination
• Signal Integrity: 8-core jack with shielded construction and EMI finger protection
• Mechanical Features: Board lock mechanism, tab direction down
• Environmental Compliance: ROHS3 compliance, MSL 1 rating, ECCN EAR99 classification

The substitute part 1-2301994-2 (TE Connectivity AMP Connectors) meets all these criteria while maintaining Active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 1-2301994-2 (TE Connectivity AMP Connectors) is the qualified substitute for the obsolete ARJM11A1-577-KB-CW2. Selection is based on:

• Functional Equivalence: Identical connector type, port configuration, mounting method, and electrical application specifications
• Compliance Alignment: Both parts maintain ROHS3 compliance and MSL 1 rating; both are classified as EAR99 and share the same HTSUS code
• Product Availability: The substitute maintains Active product status with 2424 units in stock, ensuring procurement continuity
• Physical Compatibility: Height above board differential of 0.002" (0.06mm) is within standard PCB layout tolerances for through-hole connectors
• Enhanced Specifications: The substitute provides extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and increased contact finish thickness (30.0µin versus 6.00µin), offering improved durability and environmental performance

Frequently Asked Questions (FAQ)

Q: Can the 1-2301994-2 be used as a direct replacement in existing designs?

A: Yes. The 1-2301994-2 meets all functional and mechanical requirements of the ARJM11A1-577-KB-CW2. The 0.002" height differential is within standard PCB layout tolerances for through-hole connectors and does not require design modification.

Q: What is the difference in contact finish thickness between these parts?

A: The ARJM11A1-577-KB-CW2 has 6.00µin (0.152µm) gold plating, while the 1-2301994-2 has 30.0µin (0.76µm). The thicker plating on the substitute provides enhanced wear resistance and corrosion protection over extended operational life.

Q: Are there temperature operating range considerations for substitution?

A: The ARJM11A1-577-KB-CW2 operates from 0°C to 70°C, while the 1-2301994-2 operates from -40°C to 85°C. The substitute's extended range accommodates broader environmental conditions without performance degradation.

Q: Do both connectors support the same Ethernet standards?

A: Yes. Both connectors are rated for 10/100/1000 Base-T applications with AutoMDIX capability and are designed for identical signal integrity requirements.

Q: What packaging format is available for the substitute part?

A: The 1-2301994-2 is supplied in Cut Tape (CT) packaging format.