ARJM11B1-576-KB-EW2 Equivalent & Substitute Parts

Part Overview

The ARJM11B1-576-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 integrated LED indicators (Green, Orange-Yellow) for network status monitoring.

Substiute Parts

ARJM11B1-576-KB-EW2

Abracon LLCIn Stock: 1131ARJM11B1-576-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 of the ARJM11B1-576-KB-EW2 is determined by strict equivalence across the following critical parameters:

• Connector Type: RJ45 (mandatory match)
• Number of Ports: 1 (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Orientation: 90° Angle (Right) (mandatory match)
• Termination: Solder (mandatory match)
• Applications: 10/100/1000 Base-T, AutoMDIX (mandatory match)
• Number of Cores per Jack: 8 (mandatory match)
• Shielding: Shielded (mandatory match)
• LED Color: Green, Orange-Yellow (mandatory match)

The substitute part 0826-1XX1-46-F from Bel Fuse Inc. meets all mandatory electrical and mechanical parameters. Variations in height above board (0.536" vs 0.535"), contact finish thickness, and operating temperature range represent acceptable tolerances within standard PCB layout and environmental specifications for this connector category.

Parameter Comparison

Engineering Selection Recommendations

The 0826-1XX1-46-F from Bel Fuse Inc. is the qualified substitute for the obsolete ARJM11B1-576-KB-EW2. Both parts maintain ROHS3 compliance and EAR99 export classification. The substitute part carries Active product status, ensuring continued availability and supply chain support.

The operating temperature range of the substitute part (0°C ~ 70°C) is narrower than the original (−40°C ~ 85°C). Component selection should account for the application's thermal environment. For applications requiring the full −40°C ~ 85°C range, thermal performance validation against the substitute part's specifications is necessary.

The height differential of 0.02mm (0.001") is negligible for standard PCB layout and does not impact mechanical fit or electrical performance in typical network interface applications.

Frequently Asked Questions (FAQ)

Q: Can the 0826-1XX1-46-F directly replace the ARJM11B1-576-KB-EW2 in existing designs?

A: Yes, for applications operating within 0°C ~ 70°C. The substitute part matches all critical electrical and mechanical parameters: RJ45 connector type, 1 port, through-hole mounting, 90° right-angle orientation, solder termination, 10/100/1000 Base-T with AutoMDIX support, 8-core jack configuration, shielding, and dual LED indicators. PCB layout modifications are not required due to negligible height variation.

Q: What is the impact of the narrower operating temperature range?

A: The substitute part operates from 0°C ~ 70°C versus the original's −40°C ~ 85°C. Applications requiring operation below 0°C or above 70°C must evaluate thermal performance against actual environmental conditions. Standard commercial networking equipment typically operates within this narrower range.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. No compliance barriers exist for substitution.

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

A: The substitute part specifies 50.0µin (1.27µm) versus the original's 6.00µin (0.152µm). The thicker gold plating on the substitute part provides enhanced durability and corrosion resistance, representing an improvement over the original specification.

Q: Are there alternative substitute parts available?

A: The Bel Fuse Inc. MagJack® series includes cross-reference part JK0-0136NL as an additional equivalent option within the same product family.