J0026D21 RJ45 Modular Connector - Equivalent & Substitute Parts

Part Overview

The J0026D21 is a 1-port RJ45 through-hole modular connector manufactured by Pulse Electronics, designed for 10/100 Base-TX applications. This connector features a 90° right-angle orientation with solder termination and is housed in the PULSEJACK™ J0 series. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Substiute Parts

J0026D21

Pulse ElectronicsIn Stock: 1517J0026D21 Datasheet

Current PartRFQ

J0026D21NL

Pulse ElectronicsIn Stock: 1621J0026D21NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the J0026D21 is determined by strict alignment with the following critical parameters:

• Connector Type & Port Configuration: RJ45, single port
• Mounting & Orientation: Through-hole mounting with 90° right-angle orientation
• Electrical Application: 10/100 Base-TX compatibility
• Physical Dimensions: Height above board of 0.545" (13.84mm)
• Termination Method: Solder termination
• Shielding & EMI Protection: Shielded construction
• Contact Specifications: Phosphor bronze material with gold finish
• Environmental Ratings: Operating temperature 0°C ~ 70°C

The J0026D21NL meets all these criteria and is classified as a direct substitute. Both parts share identical electrical and mechanical specifications, with the primary distinction being product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The J0026D21NL is the direct substitute for the obsolete J0026D21. Selection of the J0026D21NL is supported by the following factors:

• Product Status: The J0026D21NL maintains active product status, ensuring continued availability and manufacturing support from Pulse Electronics.
• Electrical & Mechanical Compatibility: All functional parameters are identical, including connector type, port configuration, mounting method, orientation, and application specifications.
• Compliance Enhancement: The J0026D21NL achieves RoHS compliance, whereas the original part is RoHS non-compliant. This represents an improvement in regulatory alignment for new designs and procurement cycles.
• Enhanced Shielding: The J0026D21NL incorporates an EMI finger in addition to standard shielding, providing improved electromagnetic interference protection.
• Packaging Availability: The J0026D21NL is supplied in tray packaging, facilitating standard component handling and inventory management.

For applications requiring the J0026D21, the J0026D21NL provides full functional equivalence with improved compliance and availability characteristics.

Frequently Asked Questions (FAQ)

Q: Can the J0026D21NL be used as a direct replacement for the J0026D21 in existing designs?

A: Yes. The J0026D21NL is electrically and mechanically identical to the J0026D21. All critical parameters—connector type, port count, mounting method, orientation, termination, and operating temperature range—are matched. The connector will function identically in the same PCB layout and application environment.

Q: What is the difference between the J0026D21 and J0026D21NL?

A: The primary differences are product status, RoHS compliance, and packaging. The J0026D21NL is an active product with RoHS compliance and includes enhanced EMI shielding via an EMI finger. The J0026D21 is obsolete and RoHS non-compliant. Functionally, both connectors are equivalent for 10/100 Base-TX applications.

Q: Why is the J0026D21 listed as obsolete?

A: The J0026D21 has been superseded by the J0026D21NL. Pulse Electronics has transitioned production to the newer variant, which offers improved compliance and shielding characteristics. The J0026D21NL is the recommended active product for new designs and ongoing procurement.

Q: Are there any compatibility concerns when switching from J0026D21 to J0026D21NL?

A: No compatibility concerns exist. Both parts share identical electrical specifications, mechanical dimensions, and mounting characteristics. The J0026D21NL can be substituted without PCB redesign or application modification.

Q: What does the EMI finger feature on the J0026D21NL provide?

A: The EMI finger is an additional shielding element that enhances electromagnetic interference suppression. This feature improves signal integrity in high-noise environments while maintaining full compatibility with the original J0026D21 specification.

Q: Is the tray packaging of the J0026D21NL compatible with standard component handling?

A: Yes. Tray packaging is a standard format for modular connectors and is compatible with automated pick-and-place equipment and manual assembly processes. Tray packaging facilitates efficient inventory management and component dispensing.