LP82477ANL Single Port 1000 BASE-T SMT 24 Pin Lan Transformer Modules

Product Specifications

LINK-PP LP82477ANL 10/100/1000Base-T PoE+ LAN Transformer

Engineered to meet the dual demands of high-bandwidth data transmission and reliable power injection in modern industrial and telecommunications equipment, the LINK-PP LP82477ANL is a premium, discrete 10/100/1000Base-T (Gigabit Ethernet) LAN Magnetic Transformer. Designed in a highly efficient 24-pin Surface Mount Technology (SMT) open-frame package, this single-port module is explicitly built to support PoE+ (Power over Ethernet Plus) applications. By deliberately decoupling the heavy-duty magnetic isolation circuitry from the physical RJ45 receptacle, hardware architects gain ultimate flexibility to optimize printed circuit board (PCB) thermal management, customize electromagnetic interference (EMI) shielding, and safely route high-current PoE+ power planes directly at the board level.

Manufactured under strict ISO9001 and ISO14001 quality management systems, the LP82477ANL is fully compliant with IEEE 802.3at (PoE+), UL, REACH, and RoHS specifications. Rated for a rugged industrial operating temperature range of -40°C to +85°C, this telecom-grade transformer ensures flawless Gigabit data communication and power delivery for mission-critical routing equipment, high-definition surveillance networks, and unconditioned industrial IoT enclosures.

PoE+ Power Delivery & SMT Architecture

The mechanical envelope and heavy-gauge internal winding composition of the LP82477ANL are explicitly tailored to handle the elevated current demands of PoE+ while maintaining high-density SMD layout compatibility.

• IEEE 802.3at PoE+ Handling: Designed with fortified internal windings capable of handling the DC bias currents required for 30W PoE+ applications. This allows host switches or routers to power high-draw peripherals—such as PTZ cameras, wireless access points, and VoIP phones—directly over standard twisted-pair Ethernet cables.
• Open Frame Construction: The open-frame design facilitates superior convection cooling and passive thermal dissipation compared to fully encapsulated (potted) modules. This is critical for preventing localized heat entrapment when routing continuous PoE+ currents across the PCB.
• Automated Assembly: Packaged in standard Tape & Reel format and optimized for high-speed Surface Mount (SMD/SMT) reflow soldering processes, ensuring highly reliable, low-impedance solder joints that withstand physical vibration and thermal cycling.
• Extreme Thermal Endurance: The industrial-grade -40°C to +85°C rating guarantees that the magnetic cores will not saturate under heavy PoE+ loads, ensuring electrical performance remains highly stable in freezing outdoor enclosures or high-temperature factory environments.

Advanced Gigabit Magnetic Topology & Signal Integrity

By placing the isolation magnetics in close proximity to the Ethernet PHY transceiver, designers can significantly reduce the length of unshielded differential pairs, thereby minimizing crosstalk and enhancing overall Electromagnetic Compatibility (EMC).

• 8-Core Gigabit Performance: The internal architecture features a precision-wound 8-core topology. These transformers and common-mode chokes are strictly tuned for 1000Base-T frequencies, ensuring aggressive suppression of common-mode noise and maximizing return loss margins for full-duplex Gigabit transmission.
• Galvanic Isolation: Provides robust high-voltage electrical isolation between the external twisted-pair network and the sensitive internal PHY transceivers, forming a mandatory safety barrier against voltage transients, electrostatic discharge (ESD), and destructive ground loops.
• AutoMDIX Support: The symmetrical 1:1 Transmitter and 1:1 Receiver turns ratio (T, C, S configuration) seamlessly supports AutoMDIX protocols, enabling the physical layer to automatically negotiate and correct straight-through or crossover cable configurations without manual intervention.

Hardware Layout & Thermal Management

When routing for the LP82477ANL, hardware architects must ensure that the 100-ohm differential pairs are strictly length-matched between the PHY, the 24-pin transformer pads, and the discrete RJ45 receptacles to prevent phase skew and near-end crosstalk (NEXT). Crucially, because this module handles PoE+ power, PCB traces and copper pours dedicated to the power planes must be appropriately sized to manage the DC current loads without causing localized thermal rise or board delamination. The digital ground plane must be physically isolated from the chassis ground directly beneath the transformer to preserve the absolute integrity of the galvanic isolation barrier.

Typical Applications

Combining reliable PoE+ power handling capabilities, an efficient 24-pin SMT integration, and uncompromised Gigabit signal isolation, the LP82477ANL is the definitive choice for ruggedized, high-power network edge devices:

• Security & Surveillance: High-bandwidth Networked Video Recorders (NVRs) and centralized security hubs delivering power and data to remote PoE+ IP cameras.
• Networking Infrastructure: High-reliability edge routers, enterprise PoE+ network switches, and custom communication hubs requiring discrete magnetic decoupling.
• Industrial Automation & IoT: Embedded Industrial PCs (IPCs), Ethernet control systems, and distributed SCADA gateways operating on harsh factory floors.
• Telecommunications & Edge Computing: Unconditioned outdoor wireless access points (WAPs), 5G small cells, and micro-data center nodes deployed in extreme environments.