ARJM11A1-007-KB-CW4 Equivalent & Substitute Parts

Part Overview

The ARJM11A1-007-KB-CW4 is a 1-port RJ45 through-hole modular connector manufactured by Abracon LLC, 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 and orange-yellow). The product is currently obsolete, making identification of functionally equivalent substitute components essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

ARJM11A1-007-KB-CW4

Abracon LLCIn Stock: 995ARJM11A1-007-KB-CW4 Datasheet

Current PartRFQ

08B0-1X1T-06-F

Bel Fuse Inc.In Stock: 8915708B0-1X1T-06-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARJM11A1-007-KB-CW4 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• 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
• Contact Finish: Gold
• Operating Temperature Range: 0°C ~ 70°C
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

Allowable Variations:

• Height Above Board: ±0.01" tolerance acceptable for PCB layout compatibility
• LED Color: Functionally equivalent if both status indicators present
• Contact Finish Thickness: Variation acceptable if minimum gold plating maintained
• Tab Direction: Mechanical orientation variation acceptable if board lock function preserved
• Product Status: Active status preferred for long-term availability

The substitute part 08B0-1X1T-06-F (Bel Fuse Inc., MagJack® series) meets all mandatory parameters and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 08B0-1X1T-06-F from Bel Fuse Inc. is a qualified substitute for the obsolete ARJM11A1-007-KB-CW4. Selection rationale is based on the following engineering criteria:

Functional Equivalence: Both connectors meet identical electrical and mechanical specifications for 10/100 Base-T Ethernet applications with AutoMDIX support. Pin configuration, contact material (gold finish), shielding design (EMI finger), and operating temperature range are equivalent.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and hazardous substance requirements for current manufacturing and deployment standards.

Physical Compatibility: The 0.004" height variance (14.69mm vs. 13.49mm) falls within standard PCB layout tolerances and does not impact board-level integration. Both connectors feature identical 90° right-angle orientation and through-hole solder termination.

Product Availability: The substitute part maintains active product status with substantial inventory availability (89,064 units), ensuring long-term supply chain reliability compared to the obsolete original component.

Mechanical Features: Both connectors include board lock functionality and dual LED indicators (green and orange-yellow) for link and activity status signaling.

Frequently Asked Questions (FAQ)

Q: Can the 08B0-1X1T-06-F be used as a direct replacement for the ARJM11A1-007-KB-CW4 without PCB modifications?

A: Yes. The substitute connector maintains identical electrical specifications, pin configuration, and mechanical mounting footprint. The 0.004" height difference is within standard PCB design tolerances and does not require layout changes.

Q: Are there differences in contact finish quality between the two connectors?

A: Both connectors use gold-plated contacts. The original part specifies 30.0µin thickness while the substitute specifies 15.0µin. Both exceed minimum gold plating requirements for 10/100 Base-T applications and provide equivalent contact reliability.

Q: What is the significance of the "MagJack®" designation on the substitute part?

A: MagJack® is Bel Fuse's product line designation for integrated magnetics RJ45 connectors. This indicates the connector includes integrated transformer and filtering components for Ethernet signal conditioning, consistent with the original part's AutoMDIX functionality.

Q: Does the tab direction difference (Down vs. Up) affect compatibility?

A: No. Tab direction is a mechanical orientation feature that does not impact electrical function or PCB integration. Both configurations provide equivalent board lock functionality.

Q: Are there any temperature or environmental operating differences?

A: Both connectors operate across the identical temperature range (0°C to 70°C) and maintain equivalent environmental compliance certifications (ROHS3, REACH unaffected).

Q: What packaging format is the substitute available in?

A: The 08B0-1X1T-06-F is supplied in tray packaging, suitable for automated assembly processes and bulk component handling.