ARJ11B-MASAX-LU2 Equivalent & Substitute Parts

Part Overview

The ARJ11B-MASAX-LU2 is a 1 Port RJ45 Through Hole 10/100 Base-T connector with AutoMDIX functionality, manufactured by Abracon LLC. This modular connector is designed for PCB integration with solder termination and 90° right-angle orientation. The part is currently Active in product status with 1057 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to component availability, supply chain considerations, or design flexibility within the allowed parameter ranges.

Substiute Parts

ARJ11B-MASAX-LU2

Abracon LLCIn Stock: 1165ARJ11B-MASAX-LU2 Datasheet

Current PartRFQ

A63-113-300P422

Mercury United Electronics, Inc.In Stock: 754A63-113-300P422 Datasheet

MFR RecommendedRFQ

ARJ11B-MASAA-MU2

Abracon LLCIn Stock: 842ARJ11B-MASAA-MU2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ARJ11B-MASAX-LU2 are qualified based on the following critical parameters that must remain constant:

• Connector Type: RJ45
• Number of Ports: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Applications: 10/100 Base-T, AutoMDIX
• Shielding: Shielded, EMI Finger
• Features: Board Lock
• Contact Finish: Gold
• Operating Temperature: 0°C ~ 70°C
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)

The identified substitutes maintain these core electrical and mechanical specifications. Variations in height above board, contact finish thickness, and internal material composition do not affect functional compatibility within the specified application parameters.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ARJ11B-MASAX-LU2, ARJ11B-MASAA-MU2, and A63-113-300P422—are Active products with full ROHS3 compliance and REACH Unaffected status, qualifying them for equivalent use in 10/100 Base-T Ethernet applications.

ARJ11B-MASAA-MU2 is the primary substitute within the Abracon LLC ARJ11B series, offering identical height above board and contact finish thickness specifications. This part maintains complete mechanical and electrical parity with the main part number.

A63-113-300P422 from Mercury United Electronics, Inc. provides an alternative from a different manufacturer while maintaining all critical functional parameters. The height above board differential of 0.014" (0.35mm) and increased contact finish thickness of 15.0µin remain within acceptable tolerances for standard PCB integration. This part is supplied in Tray packaging, whereas the main part is supplied in standard packaging.

Selection between these substitutes should be based on supply availability, lead time requirements, and packaging preferences, as all three parts satisfy the electrical and mechanical requirements for 10/100 Base-T RJ45 connector applications.

Frequently Asked Questions (FAQ)

Q: Can ARJ11B-MASAA-MU2 be used as a direct replacement for ARJ11B-MASAX-LU2?

A: Yes. Both parts are manufactured by Abracon LLC within the ARJ11B series and share identical specifications for connector type, port configuration, mounting method, orientation, termination, shielding, and operating temperature range. The primary difference is packaging format (Tray vs. standard).

Q: What is the significance of the height above board difference between ARJ11B-MASAX-LU2 and A63-113-300P422?

A: The ARJ11B-MASAX-LU2 has a height of 0.545" (13.84mm), while the A63-113-300P422 measures 0.531" (13.49mm). This 0.014" (0.35mm) difference is within standard PCB layout tolerances and does not affect functional compatibility for 10/100 Base-T applications. PCB clearance and component placement should be verified during design integration.

Q: Are there differences in contact finish quality between these parts?

A: Contact finish thickness varies: ARJ11B-MASAX-LU2 and ARJ11B-MASAA-MU2 both specify 6.00µin (0.152µm), while A63-113-300P422 specifies 15.0µin (0.38µm). Both thicknesses provide adequate gold plating for reliable electrical contact and corrosion resistance in 10/100 Base-T applications. The increased thickness on the Mercury part offers additional durability margin.

Q: Do all three parts meet current regulatory requirements?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What packaging formats are available?

A: ARJ11B-MASAX-LU2 is supplied in standard packaging with 1057 units in stock. ARJ11B-MASAA-MU2 is supplied in Tray packaging with 827 units in stock. A63-113-300P422 is supplied in Tray packaging with 709 units in stock.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided PCB layout accommodates the minor height variation noted above. All three parts maintain identical electrical specifications, connector type, mounting method, and functional performance for 10/100 Base-T AutoMDIX applications.