ARJ11B-MASAM-MU2 Equivalent & Substitute Parts

Part Overview

The ARJ11B-MASAM-MU2 is a 1 Port RJ45 Through Hole 10/100 Base-T modular connector manufactured by Abracon LLC. This connector features AutoMDIX capability, 90° right angle orientation, and board lock functionality for PCB applications. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in 10/100 Base-T networking applications.

Key Parameters

Parameter	Value
Connector Type	RJ45
Number of Ports	1
Applications	10/100 Base-T, AutoMDIX
Mounting Type	Through Hole
Orientation	90° Angle (Right)
Termination	Solder
Shielding	Shielded, EMI Finger
Features	Board Lock
Contact Finish	Gold
Operating Temperature	0°C ~ 70°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ARJ11B-MASAM-MU2 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters:

Connector Type: RJ45
Number of Ports: 1
Applications: 10/100 Base-T, AutoMDIX
Number of Cores per Jack: 4
Shielding: Shielded, EMI Finger
Contact Finish: Gold

Mechanical Parameters:

Mounting Type: Through Hole
Orientation: 90° Angle (Right)
Termination: Solder
Features: Board Lock
Tab Direction: Down
Operating Temperature: 0°C ~ 70°C

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Status: REACH Unaffected

All identified substitutes maintain these core parameters, ensuring direct interchangeability in PCB applications requiring 10/100 Base-T connectivity with AutoMDIX functionality.

Parameter Comparison

Parameter	ARJ11B-MASAM-MU2 (Main)	ARJ11B-MASAA-MU2	A63-113-300P422
Manufacturer	Abracon LLC	Abracon LLC	Mercury United Electronics, Inc.
Connector Type	RJ45	RJ45	RJ45
Number of Ports	1	1	1
Applications	10/100 Base-T, AutoMDIX	10/100 Base-T, AutoMDIX	10/100 Base-T, AutoMDIX
Mounting Type	Through Hole	Through Hole	Through Hole
Orientation	90° Angle (Right)	90° Angle (Right)	90° Angle (Right)
Termination	Solder	Solder	Solder
Height Above Board	0.545" (13.84mm)	0.545" (13.84mm)	0.531" (13.49mm)
Shielding	Shielded, EMI Finger	Shielded, EMI Finger	Shielded, EMI Finger
Features	Board Lock	Board Lock	Board Lock
Tab Direction	Down	Down	Down
Contact Finish	Gold	Gold	Gold
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Contact Finish Thickness	6.00µin (0.152µm)	6.00µin (0.152µm)	15.0µin (0.38µm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain Active product status and full compliance with ROHS3 and REACH regulations, ensuring regulatory continuity across substitution options.

ARJ11B-MASAA-MU2 is a direct equivalent from the same manufacturer (Abracon LLC) and series (ARJ11B). This substitute maintains identical height above board (0.545"), contact finish thickness (6.00µin), and all electrical specifications. Selection of this part preserves original design parameters with no mechanical or electrical deviation.

A63-113-300P422 from Mercury United Electronics, Inc. provides functional equivalence with all critical electrical and mechanical parameters aligned. The height above board differential (0.531" versus 0.545") represents a 0.014" reduction, which remains within typical PCB layout tolerances for 90° right angle RJ45 connectors. Contact finish thickness is increased to 15.0µin, providing enhanced durability. This part is supplied in Tray packaging versus the main part's unspecified packaging. All compliance certifications remain equivalent.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are from Abracon LLC, share identical series designation (ARJ11B), and maintain matching electrical and mechanical specifications including height above board, contact finish thickness, and all functional parameters for 10/100 Base-T AutoMDIX applications.

Q: What is the primary difference between A63-113-300P422 and the main part?

A: The A63-113-300P422 is manufactured by Mercury United Electronics, Inc. rather than Abracon LLC. The connector height above board is 0.531" compared to 0.545", and contact finish thickness is 15.0µin versus 6.00µin. All electrical specifications, RJ45 configuration, and 10/100 Base-T AutoMDIX functionality remain equivalent.

Q: Are all three parts ROHS3 compliant?

A: Yes. ARJ11B-MASAM-MU2, ARJ11B-MASAA-MU2, and A63-113-300P422 are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.

Q: Does the height difference of 0.014" between A63-113-300P422 and the main part affect PCB compatibility?

A: The height differential is within standard mechanical tolerances for 90° right angle RJ45 connectors. PCB layout compatibility depends on specific board design constraints. Verify clearance requirements for your application before selection.

Q: What packaging formats are available?

A: ARJ11B-MASAM-MU2 packaging is unspecified in the provided data. ARJ11B-MASAA-MU2 and A63-113-300P422 are supplied in Tray packaging.

Q: Can these parts be used interchangeably in existing designs?

A: ARJ11B-MASAA-MU2 provides direct interchangeability with no design modifications required. A63-113-300P422 requires verification of the 0.014" height differential against PCB layout constraints before implementation.

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