ARJ12A-MASD-A-B-FMU2 Equivalent & Substitute Parts

Part Overview

The ARJ12A-MASD-A-B-FMU2 is a 2-port RJ45 modular connector manufactured by Abracon LLC, designed for 10/100 Base-TX Ethernet applications with AutoMDIX capability. This through-hole mounted connector features a 90° right-angle orientation and integrated board lock mechanism. The part is currently in active production status with 983 units in stock.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory constraints necessitate sourcing from available stock of functionally identical alternatives.

Substiute Parts

ARJ12A-MASD-A-B-FMU2

Abracon LLCIn Stock: 994ARJ12A-MASD-A-B-FMU2 Datasheet

Current PartRFQ

ARJ12A-MASD-A-B-EMU2

Abracon LLCIn Stock: 1052ARJ12A-MASD-A-B-EMU2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJ12A-MASD-A-B-FMU2 is determined by strict equivalence across the following critical parameters:

• Connector Type: RJ45
• Number of Ports: 2
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Applications: 10/100 Base-TX, AutoMDIX
• Height Above Board: 0.535" (14.69mm)
• Shielding: Shielded, EMI Finger
• Contact Finish: Gold
• Operating Temperature Range: 0°C ~ 70°C
• RoHS Compliance: ROHS3 Compliant

The ARJ12A-MASD-A-B-EMU2 meets all these criteria and differs only in packaging format (Tray versus standard packaging), making it a direct functional equivalent suitable for substitution in applications where the connector specifications remain unchanged.

Parameter Comparison

Engineering Selection Recommendations

The ARJ12A-MASD-A-B-EMU2 is a direct functional equivalent to the ARJ12A-MASD-A-B-FMU2. Both parts are manufactured by Abracon LLC, maintain active product status, and carry identical electrical and mechanical specifications. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

The only distinction between these parts is packaging format. The ARJ12A-MASD-A-B-FMU2 uses standard packaging, while the ARJ12A-MASD-A-B-EMU2 is supplied in Tray packaging. This difference affects only the receiving, handling, and storage procedures during manufacturing operations and does not impact the connector's functional performance, electrical characteristics, or mechanical compatibility.

Selection between these parts should be based on packaging requirements specific to your manufacturing process and inventory management system.

Frequently Asked Questions (FAQ)

Q: Can ARJ12A-MASD-A-B-EMU2 be used as a direct replacement for ARJ12A-MASD-A-B-FMU2 in PCB assembly?

A: Yes. Both connectors are electrically and mechanically identical. The only difference is packaging format (Tray versus standard). Once mounted on the PCB, the connectors perform identically in 10/100 Base-TX Ethernet applications.

Q: What is the difference between FMU2 and EMU2 packaging?

A: FMU2 uses standard packaging, while EMU2 uses Tray packaging. This affects how units are received, stored, and handled during manufacturing but does not affect the connector specifications or performance.

Q: Are both parts ROHS3 compliant?

A: Yes. Both ARJ12A-MASD-A-B-FMU2 and ARJ12A-MASD-A-B-EMU2 are ROHS3 compliant and REACH unaffected.

Q: Do both parts support AutoMDIX functionality?

A: Yes. Both connectors support 10/100 Base-TX with AutoMDIX capability.

Q: What is the operating temperature range for these connectors?

A: Both parts operate within the range of 0°C to 70°C.

Q: Are the gold contact finishes identical between both parts?

A: Yes. Both connectors feature gold contact finish with 6.00µin (0.152µm) thickness.