ARJ11B-MASAB-MU2 Equivalent & Substitute Parts

Part Overview

The ARJ11B-MASAB-MU2 is a 1 Port RJ45 Through Hole modular connector manufactured by Abracon LLC, designed for 10/100 Base-T Ethernet applications with AutoMDIX support. This connector features a 90° right-angle orientation, solder termination, and board lock functionality. The part is currently active in production with 986 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to supply constraints, design flexibility, or packaging preferences while maintaining full functional compatibility in 10/100 Base-T applications.

Substiute Parts

ARJ11B-MASAB-MU2

Abracon LLCIn Stock: 1092ARJ11B-MASAB-MU2 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-MASAB-MU2 are qualified based on strict equivalence across the following critical parameters:

• Connector Type: RJ45
• Number of Ports: 1
• Applications: 10/100 Base-T, AutoMDIX
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Number of Cores per Jack: 4
• Shielding: Shielded, EMI Finger
• Features: Board Lock
• Tab Direction: Down
• Contact Finish: Gold
• Operating Temperature: 0°C ~ 70°C
• LED Color: Does Not Contain LED
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitutes maintain full functional and electrical compatibility for 10/100 Base-T Ethernet applications. Variations in height above board and contact finish thickness do not affect circuit performance or board integration in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ARJ11B-MASAB-MU2, ARJ11B-MASAA-MU2, and A63-113-300P422—are active products with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and packaging preference:

ARJ11B-MASAB-MU2 and ARJ11B-MASAA-MU2 are both Abracon LLC products within the ARJ11B series, differing only in packaging format (bulk versus tray). ARJ11B-MASAB-MU2 offers the highest current inventory at 986 units.

A63-113-300P422 from Mercury United Electronics, Inc. provides an alternative from a different manufacturer with equivalent electrical and mechanical specifications. The contact finish thickness of 15.0µin exceeds the 6.00µin specification of the Abracon parts, providing enhanced durability in high-cycle insertion applications.

All parts maintain identical functional performance in 10/100 Base-T Ethernet circuits and are suitable for direct substitution in PCB designs.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are identical in electrical and mechanical specifications. The only difference is packaging format: ARJ11B-MASAB-MU2 is supplied in bulk packaging, while ARJ11B-MASAA-MU2 is supplied in tray packaging. Functional performance in 10/100 Base-T applications is identical.

Q: Is A63-113-300P422 compatible with designs specified for ARJ11B-MASAB-MU2?

A: Yes. A63-113-300P422 meets all critical substitution parameters: RJ45 connector type, 1 port, 10/100 Base-T AutoMDIX support, through-hole mounting, 90° right-angle orientation, solder termination, 4 cores per jack, shielded construction with EMI finger, board lock feature, down tab direction, gold contact finish, and identical operating temperature range. The 0.014" (0.35mm) difference in height above board does not affect circuit compatibility.

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

A: Contact finish thickness is provided as a specification parameter. A63-113-300P422 specifies 15.0µin thickness compared to 6.00µin for the Abracon parts. Both thicknesses are within industry standards for gold-plated contacts in Ethernet connectors and do not affect electrical performance or 10/100 Base-T signal integrity.

Q: Are all three parts RoHS3 compliant?

A: Yes. ARJ11B-MASAB-MU2, ARJ11B-MASAA-MU2, and A63-113-300P422 are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected for new designs?

A: Selection is based on availability, packaging requirements, and supply chain preferences. All three parts are active products with current inventory. ARJ11B-MASAB-MU2 offers the highest stock level at 986 units. For designs requiring tray packaging, ARJ11B-MASAA-MU2 is available with 827 units in stock. A63-113-300P422 provides a multi-source option from Mercury United Electronics, Inc. with 709 units available.