ARJ14A-MISD-MU2 Equivalent & Substitute Parts

Part Overview

The ARJ14A-MISD-MU2 is a 4-port RJ45 modular connector manufactured by Abracon LLC, designed for 10/100 Base-T Ethernet applications with AutoMDIX capability. This through-hole mounted connector features a 90° right-angle orientation and board lock mechanism for secure PCB integration. The part is currently active in production with 771 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when supply chain optimization is required.

Substiute Parts

ARJ14A-MISD-MU2

Abracon LLCIn Stock: 800ARJ14A-MISD-MU2 Datasheet

Current PartRFQ

A63-143-300N161

Mercury United Electronics, Inc.In Stock: 1023A63-143-300N161 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ARJ14A-MISD-MU2 are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Connector Type: RJ45
• Number of Ports: 4
• Number of Rows: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Applications: 10/100 Base-T, AutoMDIX
• Shielding: Shielded
• Features: Board Lock
• Tab Direction: Down
• Contact Finish: Gold
• Operating Temperature Range: 0°C ~ 70°C
• Number of Cores per Jack: 4
• LED Color: Does Not Contain LED
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute part A63-143-300N161 from Mercury United Electronics, Inc. meets all critical parameters and is therefore qualified as a direct equivalent for the ARJ14A-MISD-MU2.

Parameter Comparison

Engineering Selection Recommendations

Both the ARJ14A-MISD-MU2 and A63-143-300N161 are active production parts with full regulatory compliance. Selection between these parts should be based on:

Product Availability: Choose based on current inventory levels and supply chain lead times. The ARJ14A-MISD-MU2 has 771 units in stock, while the A63-143-300N161 has 915 units available.

Regulatory Compliance: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, making them suitable for equivalent applications without additional compliance review.

Physical Dimensions: The A63-143-300N161 has a marginally greater height above board (0.516" vs 0.512"), which may require PCB layout verification in space-constrained applications.

Contact Finish Durability: The A63-143-300N161 features a thicker gold contact finish (15.0µin vs 6.00µin), which may provide extended contact life in high-cycle mating applications.

Frequently Asked Questions (FAQ)

Q: Can the A63-143-300N161 be used as a direct replacement for the ARJ14A-MISD-MU2?

A: Yes. Both parts share identical electrical specifications, mechanical mounting characteristics, and regulatory certifications. The parts are functionally equivalent for 10/100 Base-T Ethernet applications with AutoMDIX support.

Q: What is the significance of the height difference between these parts?

A: The A63-143-300N161 is 0.004" (0.11mm) taller than the ARJ14A-MISD-MU2. This minimal difference is unlikely to affect most PCB designs, but should be verified in applications with strict vertical clearance constraints.

Q: Does the thicker gold plating on the A63-143-300N161 affect compatibility?

A: No. The thicker contact finish (15.0µin vs 6.00µin) does not impact electrical or mechanical compatibility. Both finishes meet the same performance standards for 10/100 Base-T applications.

Q: Are there packaging differences between these parts?

A: The ARJ14A-MISD-MU2 packaging is not specified in the provided data. The A63-143-300N161 is supplied in Tray packaging. Confirm packaging requirements with your procurement process.

Q: Do both parts support the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of 0°C to 70°C and share the same Moisture Sensitivity Level (MSL 1 - Unlimited).