The Raspberry Pi 4 Model B represents a major leap forward compared to previous generations. With a faster CPU, true Gigabit Ethernet, and expanded use cases ranging from industrial gateways to edge computing and media servers, network performance has become a critical design factor rather than an afterthought.
While many developers focus on software optimization, the Ethernet connector and integrated magnetics (MagJack) play a decisive role in signal integrity, PoE reliability, EMI compliance, and long-term stability. For engineers looking to replace or source an alternative to A70-112-331N126, LINK-PP’s LPJG0926HENL has emerged as a proven and cost-effective solution.
This article provides a deep technical breakdown of LPJG0926HENL as an alternative MagJack for Raspberry Pi 4 applications, covering electrical performance, mechanical compatibility, PoE considerations, PCB footprint guidelines, and installation best practices.
By reading this article, you will be able to:
The Raspberry Pi 4 Model B features a true Gigabit Ethernet interface (1000BASE-T), no longer limited by the USB 2.0 bottleneck found in earlier models. This improvement introduces stricter requirements for the Ethernet connector and magnetics, including:
Any RJ45 MagJack used on a Raspberry Pi 4–based design must meet these baseline expectations to avoid packet loss, EMI issues, or intermittent link failures.
LPJG0926HENL is a 1×1 single-port RJ45 connector with integrated magnetics, designed for Gigabit Ethernet applications. It is widely deployed in single-board computers (SBCs), embedded controllers, and industrial networking devices.
These features align closely with the functional profile of A70-112-331N126, making LPJG0926HENL a strong drop-in or near-drop-in replacement candidate.
| Feature | LPJG0926HENL | A70-112-331N126 |
|---|---|---|
| Ethernet Speed | 10/100/1000BASE-T | 10/100/1000BASE-T |
| Port Configuration | 1×1 Single Port | 1×1 Single Port |
| Magnetics | Integrated | Integrated |
| PoE Support | Yes | Yes |
| LED Indicators | Green (Left) / Yellow (Right) | Green / Yellow |
| Mounting | THT | THT |
| Target Applications | SBCs, Routers, IoT | SBCs, Industrial |
From a system-level perspective, both connectors serve the same purpose. Engineers typically choose LPJG0926HENL for cost efficiency, supply stability, and wide adoption in Raspberry Pi–style designs.
For Gigabit Ethernet, magnetics quality is essential. LPJG0926HENL integrates:
These characteristics help ensure:
In real-world Raspberry Pi 4 deployments, LPJG0926HENL supports smooth data transfer for streaming, file servers, and network-attached applications without link instability.
Many Raspberry Pi 4 projects rely on Power over Ethernet (PoE) to simplify cabling and deployment, especially in industrial or ceiling-mounted installations.
LPJG0926HENL is designed to support PoE and PoE+ applications when paired with an appropriate PoE controller and power circuitry. Key design notes include:
When implemented correctly, LPJG0926HENL enables stable power delivery and data transmission over a single Ethernet cable.
LPJG0926HENL includes two integrated LEDs:
These LEDs are especially valuable during:
For Raspberry Pi–based devices deployed in remote or industrial environments, visual status feedback significantly reduces troubleshooting time.
Although LPJG0926HENL is often used as an alternative to A70-112-331N126, engineers should never assume identical footprints without verification.
1. Pinout mapping
Confirm Ethernet pairs, LED pins, and shield grounding pins.
2. Pad spacing and hole diameter
Verify THT hole size tolerance for wave or selective soldering.
3. Shield tabs and grounding
Ensure proper chassis grounding to maintain EMI performance.
4. Connector orientation
Most designs use tab-down orientation, but confirm mechanical drawings.
Failing to validate these parameters may result in assembly issues or EMI non-compliance.
LPJG0926HENL uses Through-Hole Technology, which offers strong mechanical retention—ideal for Ethernet cables frequently being plugged and unplugged.
Proper soldering ensures long-term reliability, especially in vibration-prone environments.
While frequently associated with Raspberry Pi boards, LPJG0926HENL is also used in:
This wide adoption further confirms its maturity and reliability as a Gigabit Ethernet MagJack.
From both a technical and commercial standpoint, LPJG0926HENL offers several advantages:
These factors make it a practical alternative for engineers seeking flexibility without sacrificing performance.
In many designs, yes. However, engineers should always confirm pinout and mechanical drawings before finalizing the PCB.
Yes, when used with a compliant PoE power circuit and proper PCB layout.
LED behavior depends on the Ethernet PHY and system design. The connector supports standard link/activity signaling.
Yes. Its THT mounting and integrated shield provide mechanical robustness and EMI protection.
As Raspberry Pi 4 continues to power more advanced and demanding applications, choosing the right Ethernet MagJack becomes increasingly important. LPJG0926HENL offers a well-balanced combination of Gigabit performance, PoE capability, mechanical robustness, and cost efficiency, making it a strong alternative to A70-112-331N126.
For engineers designing Raspberry Pi–based systems or compatible SBCs, LPJG0926HENL represents a reliable, production-ready choice that aligns with both technical and commercial requirements.
