ARJ11C-MASAA-B-A-2LU2 Equivalent & Substitute Parts

Part Overview

The ARJ11C-MASAA-B-A-2LU2 is a 1-port RJ45 modular connector manufactured by Abracon LLC, designed for 10/100/1000 Base-T Ethernet applications. This through-hole, right-angle connector features shielded construction with EMI finger protection and integrated board lock functionality. The part is currently active in production with 845 units in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part becomes unavailable or when design requirements permit functional alternatives.

Substiute Parts

ARJ11C-MASAA-B-A-2LU2

Abracon LLCIn Stock: 892ARJ11C-MASAA-B-A-2LU2 Datasheet

Current PartRFQ

A63-113-213N491

Mercury United Electronics, Inc.In Stock: 1394A63-113-213N491 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJ11C-MASAA-B-A-2LU2 is determined by 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)
• Shielding: Shielded, EMI Finger (mandatory match)
• Features: Board Lock (mandatory match)
• Operating Temperature Range: 0°C ~ 70°C (mandatory match)
• RoHS Compliance: ROHS3 Compliant (mandatory match)

The substitute part A63-113-213N491 meets all mandatory electrical and mechanical parameters. The primary functional difference is the supported application bandwidth: the substitute supports 10/100 Base-T with AutoMDIX capability, whereas the original part supports 10/100/1000 Base-T. This represents a reduced bandwidth specification suitable for applications not requiring gigabit performance.

Parameter Comparison

Engineering Selection Recommendations

Both the ARJ11C-MASAA-B-A-2LU2 and A63-113-213N491 maintain active production status and full compliance with ROHS3 and REACH regulations. Selection between these parts depends on application bandwidth requirements:

• ARJ11C-MASAA-B-A-2LU2: Select for applications requiring gigabit Ethernet (10/100/1000 Base-T) performance.
• A63-113-213N491: Select for applications limited to fast Ethernet (10/100 Base-T) with AutoMDIX capability. This substitute offers higher contact finish thickness (15.0µin versus 6.00µin), which may provide enhanced durability in high-cycle mating environments.

Both connectors share identical mechanical mounting characteristics, operating temperature range, and regulatory compliance status, ensuring functional interchangeability within their respective bandwidth specifications.

Frequently Asked Questions (FAQ)

Q: Can A63-113-213N491 be used as a direct replacement for ARJ11C-MASAA-B-A-2LU2?

A: A63-113-213N491 is mechanically and electrically compatible for through-hole PCB mounting. However, it supports 10/100 Base-T applications, not gigabit (1000 Base-T). Use this substitute only in applications where gigabit performance is not required.

Q: What is the difference in the number of cores per jack?

A: The ARJ11C-MASAA-B-A-2LU2 has 5 cores per jack, while A63-113-213N491 has 4 cores per jack. This reflects the difference in supported bandwidth specifications. The 4-core configuration is sufficient for 10/100 Base-T applications.

Q: Are the physical dimensions compatible?

A: Yes. Both connectors have nearly identical height above board (0.535" versus 0.530"), identical 90° right-angle orientation, and the same through-hole mounting footprint. PCB layout compatibility is maintained.

Q: What does AutoMDIX mean on the substitute part?

A: AutoMDIX is an automatic medium-dependent interface crossover feature that enables the connector to automatically detect and adapt to straight-through or crossover cable configurations. This feature is present on the substitute part but not specified for the original part.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both ARJ11C-MASAA-B-A-2LU2 and A63-113-213N491 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part has better contact durability?

A: A63-113-213N491 features a thicker gold contact finish (15.0µin) compared to ARJ11C-MASAA-B-A-2LU2 (6.00µin). The thicker finish may provide extended contact life in high-cycle mating applications.