A63-114-331P4D2 Equivalent & Substitute Parts

Part Overview

The A63-114-331P4D2 is a 1-port RJ45 through-hole modular connector manufactured by Mercury United Electronics, Inc., designed for 10/100 Base-T Ethernet applications with AutoMDIX capability. This connector features a 90° right-angle orientation, solder termination, and integrated LED indicators (green-yellow). The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance, repairs, and new designs requiring equivalent functionality.

Key Parameters

Parameter	Value
Connector Type	RJ45
Number of Ports	1
Mounting Type	Through Hole
Orientation	90° Angle (Right)
Termination	Solder
Applications	10/100 Base-T, AutoMDIX
Shielding	Shielded, EMI Finger
LED Color	Green - Yellow
Number of Cores per Jack	4
Contact Finish	Gold
Housing Material	Polybutylene Terephthalate (PBT), Polyester
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the A63-114-331P4D2 is determined by strict alignment with the following critical parameters:

Connector Type & Port Configuration: RJ45, single port
Mounting & Orientation: Through-hole, 90° right-angle
Electrical Application: 10/100 Base-T with AutoMDIX support
Termination Method: Solder
Shielding & EMI Protection: Shielded with EMI finger
Environmental Compliance: ROHS3 compliant, MSL 1

Two substitute parts meet these criteria:

A63-113-331P4D2 (Mercury United Electronics, Inc.) — Direct manufacturer substitute with identical mechanical and electrical specifications. Active product status provides ongoing availability and supply chain stability.

ARJ11B-MBSAI-A-B-EMU2 (Abracon LLC) — Cross-manufacturer equivalent meeting all functional and compliance requirements. Represents an alternative sourcing option with confirmed inventory.

Parameter Comparison

Parameter	A63-114-331P4D2	A63-113-331P4D2	ARJ11B-MBSAI-A-B-EMU2
Manufacturer	Mercury United Electronics, Inc.	Mercury United Electronics, Inc.	Abracon LLC
Product Status	Obsolete	Active	Active
Connector Type	RJ45	RJ45	RJ45
Number of Ports	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole
Orientation	90° Angle (Right)	90° Angle (Right)	90° Angle (Right)
Termination	Solder	Solder	Solder
Applications	10/100 Base-T, AutoMDIX	10/100 Base-T, AutoMDIX	10/100 Base-T, AutoMDIX
Height Above Board	0.531" (13.49mm)	0.531" (13.49mm)	0.545" (13.84mm)
LED Color	Green - Yellow	Green - Yellow	Green - Yellow
Number of Cores per Jack	4	4	4
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	Not specified	0°C ~ 70°C
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
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

A63-113-331P4D2 is the primary substitute for A63-114-331P4D2. Both parts are manufactured by Mercury United Electronics, Inc., with identical mechanical dimensions, electrical specifications, and compliance certifications. The A63-113-331P4D2 holds active product status, ensuring continued availability and supply chain support. This part is recommended for direct replacement in existing designs and new applications.

ARJ11B-MBSAI-A-B-EMU2 serves as a secondary cross-manufacturer alternative. Manufactured by Abracon LLC, this connector meets all functional and compliance requirements. The height above board measurement (0.545" vs. 0.531") represents a minor dimensional variance of 0.014" (0.35mm) that may require PCB layout verification in space-constrained applications. This part provides supply diversification and is suitable for applications where multi-source qualification is required.

Both substitute parts maintain ROHS3 compliance, MSL 1 rating, and EAR99 export classification, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can A63-113-331P4D2 be used as a direct replacement for A63-114-331P4D2?

A: Yes. Both connectors share identical specifications for connector type, port configuration, mounting method, orientation, termination, shielding, and compliance certifications. The A63-113-331P4D2 is the direct Mercury United Electronics equivalent with active product status.

Q: What is the difference between A63-113-331P4D2 and ARJ11B-MBSAI-A-B-EMU2?

A: Both parts are functionally equivalent for 10/100 Base-T applications. The primary differences are manufacturer (Mercury vs. Abracon) and a minor height variance of 0.014" (0.35mm). The ARJ11B-MBSAI-A-B-EMU2 provides cross-manufacturer sourcing flexibility.

Q: Are there any dimensional concerns when substituting with ARJ11B-MBSAI-A-B-EMU2?

A: The ARJ11B-MBSAI-A-B-EMU2 has a height above board of 0.545" compared to 0.531" for the original part. This 0.014" (0.35mm) difference should be evaluated against PCB clearance requirements and component placement constraints in your specific application.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts (A63-114-331P4D2, A63-113-331P4D2, and ARJ11B-MBSAI-A-B-EMU2) are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.

Q: Why is A63-114-331P4D2 listed as obsolete?

A: The A63-114-331P4D2 has been discontinued by Mercury United Electronics, Inc. The A63-113-331P4D2 represents the active replacement within the same manufacturer's product line.

Q: Can these connectors be used interchangeably in existing PCB designs?

A: A63-113-331P4D2 can be used as a direct interchange. ARJ11B-MBSAI-A-B-EMU2 requires PCB layout verification due to the 0.014" height difference, particularly in applications with tight vertical clearance specifications.

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