1-1840727-3 RJ45 Modular Connector Equivalent & Substitute Parts

Part Overview

The 1-1840727-3 is a single-port RJ45 through-hole modular connector manufactured by TRP Connector B.V., designed for 10/100/1000 Base-T Ethernet applications with AutoMDIX capability. This MagJack® series connector features a 90° right-angle orientation, solder termination, and integrated LED indicators. The part is currently active in production with 712 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in PCB designs without circuit modification.

Substiute Parts

1-1840727-3

TRP Connector B.V.In Stock: 7441-1840727-3 Datasheet

Current PartRFQ

7499511611A

Würth ElektronikIn Stock: 42547499511611A Datasheet

SimilarRFQ

JK0-0187NL

Pulse ElectronicsIn Stock: 1196JK0-0187NL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following parameters:

• Connector Type: RJ45
• Number of Ports: 1
• Mounting Type: Through Hole
• Orientation: 90° Angle (Right)
• Termination: Solder
• Number of Cores per Jack: 12
• Shielding: Shielded, EMI Finger
• Operating Temperature Range: 0°C ~ 70°C
• RoHS Compliance: ROHS3 or equivalent

The identified substitute parts meet all core electrical and mechanical requirements for direct PCB replacement. Variations in secondary parameters such as contact material, shield material, LED color configuration, and height above board do not preclude substitution when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

Both 7499511611A and JK0-0187NL meet the core substitution criteria for the 1-1840727-3. Selection between alternatives is based on compliance status and product availability.

The 7499511611A (Würth Elektronik) carries ROHS3 compliance and supports Power over Ethernet+ (PoE+) applications, providing extended functionality for designs requiring PoE capability. This part is available in higher quantity (4225 units).

The JK0-0187NL (Pulse Electronics) carries RoHS compliance and maintains identical core electrical specifications to the main part. This part is available in moderate quantity (1138 units).

All three parts satisfy REACH and EAR99 export classification requirements. Height above board variations (13.61mm, 13.60mm, and 13.87mm respectively) fall within typical PCB layout tolerances for through-hole connectors.

Frequently Asked Questions (FAQ)

Q: Can 7499511611A be used as a direct replacement for 1-1840727-3 in existing designs?

A: Yes. The 7499511611A meets all core electrical and mechanical parameters. The addition of PoE+ support does not affect compatibility in standard 10/100/1000 Base-T applications. Packaging differs (Tray vs. Bulk), which may affect procurement and handling procedures.

Q: What is the significance of contact material differences between these parts?

A: The main part and JK0-0187NL use Phosphor Bronze contacts, while 7499511611A uses Tin contacts. Both materials with gold finish provide equivalent electrical performance in 10/100/1000 Base-T applications. Contact finish thickness varies (50.0µin vs. 30.0µin), but both exceed minimum requirements for solder termination reliability.

Q: Are there height above board differences that affect PCB layout?

A: Height variations range from 13.60mm to 13.87mm. These differences are within standard mechanical tolerances for through-hole RJ45 connectors and do not require PCB redesign. Verify clearance with adjacent components in your specific layout.

Q: Do LED color differences affect electrical function?

A: No. LED color is a visual indicator only and does not affect electrical performance or signal integrity. The main part and 7499511611A both provide Green and Orange-Yellow indicators. The JK0-0187NL provides dual Green indicators. Selection may depend on design aesthetics or user interface requirements.

Q: What is the impact of shield material differences?

A: The main part and JK0-0187NL use Brass shields, while 7499511611A uses Copper Alloy. Both materials provide equivalent EMI shielding performance for 10/100/1000 Base-T applications. Shield material does not affect electrical compatibility.

Q: Are all three parts suitable for the same operating temperature range?

A: Yes. All three parts operate across 0°C to 70°C, meeting identical thermal specifications.

Q: What packaging considerations apply to these substitutes?

A: The main part is supplied in Bulk packaging. Both substitutes are supplied in Tray packaging. Verify that your procurement and assembly processes accommodate tray-packaged components.