ARJM11B1-577-KB-EW2 Equivalent & Substitute Parts

Part Overview

The ARJM11B1-577-KB-EW2 is a 1 Port RJ45 Through Hole connector rated for 10/100/1000 Base-T with AutoMDIX functionality, manufactured by Abracon LLC. This component is classified as Obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The connector features a 90° right-angle orientation, solder termination, and dual LED indicators (Green and Orange-Yellow) for network status signaling.

Substiute Parts

ARJM11B1-577-KB-EW2

Abracon LLCIn Stock: 1003ARJM11B1-577-KB-EW2 Datasheet

Current PartRFQ

0826-1XX1-46-F

Bel Fuse Inc.In Stock: 9260826-1XX1-46-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJM11B1-577-KB-EW2 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Type: RJ45
• Number of Ports: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Applications: 10/100/1000 Base-T, AutoMDIX
• Termination: Solder
• Number of Cores per Jack: 8
• Shielding: Shielded
• Contact Finish: Gold

Allowable Variations:

• Height Above Board: ±0.001" tolerance acceptable
• LED Color: Functionally equivalent if dual-color status indication maintained
• Operating Temperature Range: May differ based on application requirements
• Contact Finish Thickness: Acceptable if minimum gold plating maintained
• Features: Board Lock vs. Board Guide acceptable as mechanical design variation
• Tab Direction: Up or Down acceptable as mechanical design variation
• Product Status: Active preferred over Obsolete for new designs

The substitute part 0826-1XX1-46-F (Bel Fuse Inc., MagJack® series) meets all mandatory matching parameters and is classified as Active, making it a valid equivalent for the obsolete ARJM11B1-577-KB-EW2.

Parameter Comparison

Engineering Selection Recommendations

The 0826-1XX1-46-F from Bel Fuse Inc. is the qualified substitute for the obsolete ARJM11B1-577-KB-EW2. Both components maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for current production environments.

The substitute part features an extended contact finish thickness (50.0µin vs. 6.00µin), which provides enhanced durability and contact reliability over the product lifecycle. The Active product status of the 0826-1XX1-46-F ensures ongoing availability and manufacturer support, eliminating supply chain risk associated with the obsolete ARJM11B1-577-KB-EW2.

Operating temperature range differs between the two parts. The original component operates from -40°C to 85°C, while the substitute operates from 0°C to 70°C. Component selection must account for the specific thermal environment of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 0826-1XX1-46-F directly replace the ARJM11B1-577-KB-EW2 in existing designs?

A: Yes. Both connectors share identical electrical specifications for RJ45 1 Port Through Hole 10/100/1000 Base-T AutoMDIX applications. Physical dimensions are equivalent within manufacturing tolerance (Height Above Board: 14.69mm vs. 13.61mm). PCB footprint compatibility is maintained.

Q: What is the significance of the difference in contact finish thickness?

A: The substitute part (0826-1XX1-46-F) provides 50.0µin gold plating compared to 6.00µin on the original. This increased thickness enhances contact durability, reduces wear during mating cycles, and improves long-term reliability in high-cycle applications.

Q: Are there temperature limitations when substituting?

A: The substitute part operates within 0°C to 70°C, compared to the original -40°C to 85°C range. Applications requiring operation below 0°C or above 70°C must evaluate thermal performance independently. Standard commercial networking environments typically operate within the substitute's temperature range.

Q: Do both parts support the same LED indicator functionality?

A: Yes. Both components feature dual LED indicators (Green and Orange-Yellow) for network status signaling, maintaining identical functional behavior in the application circuit.

Q: What is the difference between Board Lock and Board Guide features?

A: Board Lock (original) and Board Guide (substitute) are mechanical retention variations. Both secure the connector to the PCB during assembly and operation. Selection depends on PCB design and assembly process requirements; both are functionally equivalent for electrical performance.

Q: Are regulatory certifications equivalent between the two parts?

A: Yes. Both components are ROHS3 Compliant and REACH Unaffected, satisfying current regulatory requirements for electronic component manufacturing and distribution.