J0012D21 Equivalent & Substitute Parts

Part Overview

The J0012D21 is a 1-port RJ45 through-hole modular connector manufactured by Pulse Electronics, designed for 10/100 Base-TX Ethernet applications with AutoMDIX capability. This connector features a 90° right-angle orientation, shielded design with EMI finger protection, and solder termination on PCB. The J0012D21 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Substiute Parts

J0012D21

Pulse ElectronicsIn Stock: 787J0012D21 Datasheet

Current PartRFQ

J0012D21NL

Pulse ElectronicsIn Stock: 881J0012D21NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the J0012D21 is determined by strict equivalence across electrical and mechanical parameters. The primary substitute, J0012D21NL, maintains identical specifications for connector type, port configuration, mounting method, physical orientation, termination approach, board height, shielding architecture, contact materials, and operating temperature range. Both parts belong to the PULSEJACK™ J0 series and support identical 10/100 Base-TX applications with AutoMDIX functionality.

The key parameters governing substitution are:

• Connector Type: RJ45
• Number of Ports: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Height Above Board: 0.545" (13.84mm)
• Shielding: Shielded, EMI Finger
• Contact Material: Phosphor Bronze
• Contact Finish: Gold
• Operating Temperature: 0°C ~ 70°C

Parameter Comparison

Engineering Selection Recommendations

The J0012D21NL is the direct equivalent for the obsolete J0012D21. Both parts are electrically and mechanically identical across all functional parameters. The J0012D21NL offers the advantage of active product status, ensuring continued availability and supply chain support. Additionally, the J0012D21NL achieves RoHS compliance, whereas the J0012D21 does not, making the substitute preferable for applications subject to RoHS regulatory requirements. The packaging difference (tray versus bulk) does not affect electrical or mechanical compatibility and is a procurement consideration only.

Frequently Asked Questions (FAQ)

Q: Are J0012D21 and J0012D21NL electrically interchangeable? A: Yes. Both parts are RJ45 connectors with identical electrical specifications, including 10/100 Base-TX support, AutoMDIX capability, shielding architecture, contact materials, and operating temperature range.

Q: What is the mechanical compatibility between these parts? A: Complete mechanical compatibility exists. Both connectors share identical mounting type (through-hole), orientation (90° right angle), board height (0.545"), termination method (solder), and physical dimensions.

Q: Why is J0012D21 listed as obsolete? A: The J0012D21 has been discontinued by Pulse Electronics. The J0012D21NL serves as the active replacement within the PULSEJACK™ J0 series.

Q: Does packaging affect substitution? A: Packaging (bulk versus tray) is a supply and handling consideration only. It does not affect electrical performance, mechanical fit, or functional compatibility on the PCB.

Q: Is RoHS compliance a factor in substitution? A: RoHS compliance status differs between the parts. The J0012D21NL is RoHS compliant, while the J0012D21 is not. For applications requiring RoHS compliance, the J0012D21NL is the appropriate selection.

Q: Can I use J0012D21NL in designs originally specified for J0012D21? A: Yes. The J0012D21NL is a direct substitute with no design modifications required. PCB footprints, mounting holes, and solder pad layouts are identical.