As Ethernet technology continues to advance—powering everything from consumer devices to industrial IoT systems—the demand for reliable signal integrity and power delivery grows with it. At the core of this connectivity are LAN transformers, also known as magnetics, which ensure signal isolation, impedance matching, and electromagnetic interference (EMI) suppression.

Among the various packaging formats available, DIP (Dual In-line Package) LAN transformers have remained a dependable solution for engineers who prioritize durability, EMI control, and ease of testing. This article explores the characteristics, advantages, and typical use cases of DIP package LAN transformers in modern Ethernet systems.

DIP LAN Transformers

What Is a DIP Package LAN Transformer?

A DIP (Dual In-line Package) LAN transformer is a type of network magnetic component with two parallel rows of pins that are inserted into through-hole plated holes on a PCB. These transformers are widely used in Ethernet circuits (10/100/1000BASE-T and beyond) for signal conditioning, electrical isolation, and power transfer.

Key features of DIP LAN transformers include:

  • Robust mechanical anchoring via through-hole mounting

  • Stable performance under vibration or thermal stress

  • Simplified prototyping and debugging

  • Excellent signal isolation and common-mode noise rejection

Why DIP Package LAN Magneticss Matter

  • Mechanical robustness & through‑hole reliability:
    DIP/THT modules are ideal for high‑vibration or shock-prone environments—as found in industrial or outdoor equipment—where surface-mount parts may risk detachment.

  • High isolation & regulatory compliance:
    These transformers provide ≥1500 Vrms isolation, meeting IEEE802.3 and UL standards—essential for safe PoE deployments.

  • EMI and common‑mode noise suppression:
    Built-in common-mode chokes significantly reduce interference, improving network integrity and signal quality.

Typical Applications of Dual in-line LAN Transformer

  • Power over Ethernet (PoE/PoE+) Switches

  • Industrial Routers and Gateways

  • Embedded Ethernet Controllers

  • Telecom Equipment (DSLAM, OLTs, ONU)

  • Medical Devices with Network Interfaces

  • Rugged IoT Edge Devices

These transformers support common Ethernet standards (IEEE 802.3) and often integrate with Ethernet PHYs to meet EMI and EMC requirements.

Spotlight: LINK-PP LP82487PNL – 24‑Pin DIP PoE+ Transformer Module

PoE+ Transformer Module

Core Specifications

  • Ethernet speed: 10/100/1000BASE‑T (1 Gbps)

  • Ports: Single‑port with 24 pins

  • Mounting & package: DIP, through-hole (THT), open-frame package

  • Operating temperature: 0 °C to +70 °C

  • Design：24-pin through-hole DIP layout

  • Hipot：1500Vrms isolation

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Key Advantages

  • Seamless PoE+ integration: Certified for Power‑over‑Ethernet, fitting IEEE 802.3at standards.

  • AutomDX support: Automatically supports various Ethernet speeds (10/100/1000 Mbps).

  • Industrial suitability: Open-frame, THT style ensures excellent heat dissipation and board mechanical strength.

This ethernet magnetic demonstrates how a DIP design can meet stringent performance and safety demands in power-capable Ethernet environments.

Design Considerations When Using DIP LAN Transformers

When integrating DIP LAN Magnetics into your PCB layout:

  • Allocate sufficient board space for the component body and pin spacing

  • Optimize the ground plane layout for EMI performance

  • Ensure compatibility with wave soldering processes

  • Plan for pin header height clearance in stacked or enclosed systems

For automated lines, selective soldering or wave solder fixtures can bridge the gap between THT and SMT flows.

Conclusion

DIP package LAN transformers remain a vital part of the Ethernet ecosystem—especially where mechanical resilience, EMI protection, and long-term reliability are prioritized. As high-speed networking and PoE technologies expand, so too does the need for magnetics that can deliver consistent electrical and thermal performance under stress.

Whether you’re designing for industrial Ethernet or high-reliability telecom systems, DIP LAN transformers offer a proven path forward.

LINK-PP offers an extensive selection of DIP and SMT LAN transformers optimized for your Ethernet interface needs.
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