ARJ11D-MBSK-A-B-IMU2 Equivalent & Substitute Parts

Part Overview

The ARJ11D-MBSK-A-B-IMU2 is a 1-port RJ45 modular connector manufactured by Abracon LLC, designed for 10/100 Base-T Ethernet applications with AutoMDIX capability. This through-hole, right-angle connector features shielded construction with EMI finger protection and board lock functionality. The part is currently active in production with 836 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where form factor and performance requirements remain constant.

Substiute Parts

ARJ11D-MBSK-A-B-IMU2

Abracon LLCIn Stock: 927ARJ11D-MBSK-A-B-IMU2 Datasheet

Current PartRFQ

ARJ11D-MASE-A-B-EMU2

Abracon LLCIn Stock: 1151ARJ11D-MASE-A-B-EMU2 Datasheet

MFR RecommendedRFQ

A63-113-231N435

Mercury United Electronics, Inc.In Stock: 874A63-113-231N435 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ARJ11D-MBSK-A-B-IMU2 are qualified based on strict alignment of the following critical parameters:

Electrical Compatibility: Connector type (RJ45), port count (1), core count (4), application support (10/100 Base-T, AutoMDIX), and contact finish (Gold) must be identical.

Mechanical Compatibility: Mounting type (through hole), orientation (90° right angle), termination method (solder), and shielding configuration (shielded with EMI finger) must match.

Environmental & Compliance: Operating temperature range (0°C ~ 70°C), RoHS3 compliance, MSL rating (1), and REACH status must be equivalent.

Form Factor Tolerance: Height above board may vary within acceptable PCB layout margins (0.531" to 0.545" represents standard manufacturing tolerance for this connector class).

Two substitute parts meet these criteria: ARJ11D-MASE-A-B-EMU2 (Abracon LLC, same series) and A63-113-231N435 (Mercury United Electronics, Inc., alternative manufacturer).

Parameter Comparison

Engineering Selection Recommendations

All three parts—ARJ11D-MBSK-A-B-IMU2, ARJ11D-MASE-A-B-EMU2, and A63-113-231N435—are active production components with ROHS3 compliance and REACH unaffected status, qualifying them for equivalent use in 10/100 Base-T Ethernet applications.

ARJ11D-MASE-A-B-EMU2 is the manufacturer-recommended substitute within the Abracon ARJ11D series. It maintains identical electrical and mechanical specifications with a height variance of 0.014" (0.35mm), which falls within standard PCB layout tolerance for right-angle connectors. This part offers the highest current inventory (1125 units).

A63-113-231N435 from Mercury United Electronics, Inc. provides cross-manufacturer equivalence with identical height and form factor to the original part. The contact finish thickness is thicker (15.0µin vs. 6.00µin), which does not affect electrical performance but may extend contact durability in high-cycle applications. Inventory availability is 795 units.

Selection between substitutes depends on supply chain requirements, manufacturer preference, and inventory availability rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Can ARJ11D-MASE-A-B-EMU2 be used as a direct replacement for ARJ11D-MBSK-A-B-IMU2?

A: Yes. Both parts are RJ45 through-hole connectors with identical electrical specifications, shielding configuration, and operating parameters. The 0.014" height difference is within acceptable PCB layout tolerance for 90° right-angle connectors and does not affect board-level compatibility.

Q: What is the difference between the Abracon and Mercury substitute parts?

A: Both parts meet the same electrical and mechanical requirements for 10/100 Base-T AutoMDIX applications. The primary difference is manufacturer origin and contact finish thickness. Mercury's A63-113-231N435 features thicker gold plating (15.0µin vs. 6.00µin), which may provide extended contact life in high-insertion-cycle environments. Form factor and height are identical to the original part.

Q: Are all three parts RoHS3 compliant?

A: Yes. ARJ11D-MBSK-A-B-IMU2, ARJ11D-MASE-A-B-EMU2, and A63-113-231N435 are all ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity), suitable for standard PCB assembly and storage conditions.

Q: Does the contact finish thickness affect electrical performance?

A: No. Contact finish thickness does not impact electrical conductivity or signal integrity for 10/100 Base-T applications. Thicker plating (15.0µin) may extend mechanical durability in high-insertion-cycle scenarios, but both finishes meet the electrical requirements of this connector class.

Q: Can these parts be used interchangeably in production?

A: Yes, provided PCB layout accommodates the maximum height specification (0.545" for ARJ11D-MASE-A-B-EMU2). All three parts share identical connector type, port configuration, shielding, and application support, enabling direct substitution in designs meeting the specified operating temperature range (0°C ~ 70°C).

Q: What is the significance of the Board Lock feature?

A: Board Lock is a mechanical retention feature that secures the connector to the PCB during assembly and operation, preventing accidental disconnection. All three substitute parts include this feature, ensuring consistent mechanical reliability across equivalent designs.