ARJ11F-MASD-AB-A-FM2 Equivalent & Substitute Parts

Part Overview

The ARJ11F-MASD-AB-A-FM2 is a 1-port RJ45 modular connector manufactured by Abracon LLC, designed for 10/100/1000 Base-T Ethernet applications with AutoMDIX support. This through-hole connector features a 90° right-angle orientation and integrated board lock mechanism. The product is currently active in production with 1109 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are met, enabling component sourcing flexibility and supply chain continuity.

Substiute Parts

ARJ11F-MASD-AB-A-FM2

Abracon LLCIn Stock: 1167ARJ11F-MASD-AB-A-FM2 Datasheet

Current PartRFQ

0857931007

MolexIn Stock: 11530857931007 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0857931007 connector qualifies as a direct substitute for the ARJ11F-MASD-AB-A-FM2 based on the following critical parameters:

• Connector Type: Both are RJ45 modular connectors
• Port Configuration: Single port, single row
• Mounting Method: Through-hole solder termination
• Mechanical Orientation: 90° right-angle configuration
• Electrical Application: 10/100/1000 Base-T with AutoMDIX support
• Core Count: 8-core jack configuration
• Shielding Design: Shielded with EMI finger protection
• Mechanical Features: Board lock mechanism present
• Status Indicators: Dual-color LED (Green, Yellow-Green)
• Temperature Range: 0°C to 70°C operating window
• Regulatory Compliance: ROHS3 and REACH compliant

Minor dimensional variations (height above board: 0.531" vs 0.546") and contact finish thickness differences (6.00µin vs 30.0µin) remain within acceptable tolerances for PCB-level substitution in standard Ethernet applications.

Parameter Comparison

Engineering Selection Recommendations

Both the ARJ11F-MASD-AB-A-FM2 and 0857931007 are active production components with full regulatory compliance. Selection between these parts should be based on:

• Supply availability and lead time requirements
• PCB layout constraints related to the 0.015" (0.38mm) height differential
• Contact finish thickness preference for specific application durability requirements
• Packaging format (Abracon standard vs. Molex tray packaging)
• Established supplier relationships and procurement processes

Both connectors meet identical electrical performance requirements for 10/100/1000 Base-T Ethernet applications and carry equivalent regulatory certifications (ROHS3, REACH, EAR99).

Frequently Asked Questions (FAQ)

Q: Can the Molex 0857931007 be used as a direct replacement for the ARJ11F-MASD-AB-A-FM2 on existing PCBs?

A: Yes. Both connectors share identical through-hole footprints, solder termination, and mechanical orientation. The 0.015" height difference is negligible for standard PCB assembly and does not affect electrical performance or mechanical fit.

Q: Are there any electrical performance differences between these two RJ45 connectors?

A: No. Both connectors support identical 10/100/1000 Base-T applications with AutoMDIX functionality, 8-core jack configuration, and dual-color LED indicators. Electrical specifications are equivalent.

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

A: The Molex part features 30.0µin gold plating versus 6.00µin on the Abracon part. Both thicknesses provide adequate corrosion resistance and electrical conductivity for standard Ethernet applications. Thicker plating may offer extended durability in high-cycle mating environments.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the ARJ11F-MASD-AB-A-FM2 and 0857931007 are ROHS3 compliant, REACH unaffected, and classified as EAR99 export control items. Moisture sensitivity level is identical (MSL 1 - Unlimited).

Q: What packaging differences exist between these connectors?

A: The Abracon ARJ11F-MASD-AB-A-FM2 uses standard packaging, while the Molex 0857931007 is supplied in tray packaging. Both formats are suitable for automated assembly processes.

Q: Are both parts currently in production?

A: Yes. Both connectors maintain active product status with current inventory availability (1109 units for Abracon, 1122 units for Molex).