ARJ11B-MASBD-LU2 Equivalent & Substitute Parts

Part Overview

The ARJ11B-MASBD-LU2 is a 1-port RJ45 through-hole modular connector manufactured by Abracon LLC, designed for 10/100 Base-T Ethernet applications. This shielded connector features a 90° right-angle orientation with board lock functionality and gold-plated contacts. The part is currently active in production with 676 units in stock and maintains full RoHS3 and REACH compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in PCB designs without functional degradation.

Substiute Parts

ARJ11B-MASBD-LU2

Abracon LLCIn Stock: 745ARJ11B-MASBD-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

Substitution eligibility for the ARJ11B-MASBD-LU2 is determined by strict alignment of the following critical parameters:

• Connector Type: RJ45
• Number of Ports: 1
• Applications: 10/100 Base-T
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Shielding: Shielded, EMI Finger
• Features: Board Lock
• Tab Direction: Down
• Contact Finish: Gold
• Operating Temperature Range: 0°C ~ 70°C
• Compliance: RoHS3 Compliant, REACH Unaffected

The identified substitute parts meet all mandatory electrical and mechanical parameters. Variations in secondary attributes such as number of cores per jack, contact finish thickness, and height above board do not preclude substitution when primary functional parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both ARJ11B-MASAA-MU2 and A63-113-300P422 are qualified substitutes for the ARJ11B-MASBD-LU2 based on alignment of all critical electrical and mechanical parameters.

ARJ11B-MASAA-MU2 maintains identical manufacturer lineage (Abracon LLC) and identical height above board specification (0.545"), differing only in core count (4 vs. 5) and contact finish thickness (6.00µin). This variant is suitable for applications where AutoMDIX functionality is beneficial.

A63-113-300P422 from Mercury United Electronics, Inc. provides equivalent functionality with a marginally reduced height above board (0.531" vs. 0.545") and increased contact finish thickness (15.0µin vs. 6.00µin). All three parts maintain identical compliance certifications (RoHS3, REACH Unaffected) and operating temperature ranges.

Selection between substitutes should be based on PCB layout constraints, lead time availability, and design margin requirements for contact durability.

Frequently Asked Questions (FAQ)

Q: Can ARJ11B-MASAA-MU2 directly replace ARJ11B-MASBD-LU2 on existing PCBs?

A: Yes. Both connectors share identical mounting type (through hole), orientation (90° right angle), height above board (0.545"), and all critical electrical parameters. The difference in core count (4 vs. 5) does not affect substitution eligibility for 10/100 Base-T applications.

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

A: The A63-113-300P422 is 0.014" (0.35mm) lower than the original part. This difference is negligible for most PCB designs but should be verified if the connector height is a critical constraint in your application.

Q: Does the increased contact finish thickness on A63-113-300P422 affect compatibility?

A: No. The contact finish thickness (15.0µin vs. 6.00µin) does not impact electrical or mechanical compatibility. The increased thickness may provide enhanced durability in high-cycle mating applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. ARJ11B-MASBD-LU2, ARJ11B-MASAA-MU2, and A63-113-300P422 are all RoHS3 compliant and REACH unaffected.

Q: What does AutoMDIX functionality mean in the substitute parts?

A: AutoMDIX (Automatic Medium-Dependent Interface Crossover) is an additional feature present in ARJ11B-MASAA-MU2 and A63-113-300P422 that automatically detects and corrects cable polarity. This feature does not affect basic 10/100 Base-T compatibility with the original ARJ11B-MASBD-LU2.

Q: Can I use these substitutes interchangeably in production?

A: Yes, provided PCB layout accommodates the specified height above board and mounting footprint. Verify lead time and inventory availability with your supplier before committing to production quantities.