Belfuse 8211-1X1T-36-F Compatible LINK-PP LPJU3101AONL RJ45 MagJack With Single USB 10/100 Base-T

Product Specifications

Belfuse 8211-1X1T-36-F Compatible LINK-PP LPJU3101AONL 10/100Base-T Single USB RJ45 Combo Connector

Engineered to maximize faceplate I/O density and dramatically streamline printed circuit board (PCB) layouts, the LINK-PP LPJU3101AONL is a highly integrated, industrial-grade Fast Ethernet RJ45 Modular Jack stacked with a Single USB Type-A port. By consolidating a highly reliable 10/100Base-T Ethernet connection, 4-core magnetic isolation circuitry, and a standard USB interface into a single unified shielded housing, hardware architects can effectively conserve critical board real estate. Operating flawlessly across a commercial temperature envelope of 0°C to +70°C, this non-PoE combo connector provides a highly stable physical layer interface for precision surgical equipment, advanced digital cameras, network firewalls, and automated logic controllers.

Manufactured under stringent ISO9001 and ISO14001 quality management systems, the LPJU3101AONL guarantees full compliance with IEEE 802.3, UL, REACH, and RoHS regulatory standards. This ensures that hardware engineers are integrating a globally compliant, safe, and environmentally conscious component capable of sustaining dependable data delivery and peripheral connectivity simultaneously in highly regulated medical and commercial environments.

Belfuse 8211-1X1T-36-F Cross-Reference & BOM Optimization

Developed as an exact form-fit-function compatible replacement for the Belfuse 8211-1X1T-36-F, the LPJU3101AONL empowers procurement teams and hardware engineers to secure their component supply chains and mitigate shortages. Delivering an identical PCB footprint, matched electrical impedance, and a precise pin-out configuration for both the RJ45 and USB interfaces, this cross-reference component acts as a seamless drop-in alternative. It facilitates rapid integration into existing motherboard layouts, completely bypassing the costly engineering overhead and delays associated with board respins or recertification.

Stacked USB & RJ45 Architecture and EMI Shielding

The mechanical envelope of the LPJU3101AONL is meticulously optimized for spatial efficiency, structural rigidity, and robust electromagnetic compatibility (EMC) in modern hardware enclosures.

• I/O Consolidation: Stacking a Fast Ethernet RJ45 port above a single USB Type-A receptacle reduces the horizontal PCB footprint required for faceplate I/O by up to 50%. This is an essential configuration for compact embedded motherboards and small form-factor (SFF) medical and commercial appliances.
• Port Configuration: 8P8C standard RJ45 interface, Tab-Up orientation providing positive, tactile cable latching to prevent accidental disconnections in active clinical or industrial environments.
• Mounting Profile: 90-degree right-angle (side entry) utilizing highly durable Through-Hole Technology (THT) soldering. Reinforced with heavy-duty T-post retaining structures designed to absorb the mechanical stress of frequent Ethernet and USB cable insertions.
• EMI Containment: Enclosed in a continuous, heavy-duty metal shield equipped with active EMI grounding tabs. These tabs make direct electrical contact with the metallic chassis bezel, aggressively containing internal high-frequency emissions and blocking external Radio Frequency Interference (RFI).
• Visual Diagnostics: Equipped with sophisticated Tri-color (Orange & Green) and Yellow LEDs, delivering immediate, localized visual feedback for network link status and activity directly at the faceplate.

Integrated Fast Ethernet Magnetics & Signal Integrity

Embedding the Ethernet isolation circuitry directly within the shielded combo housing delivers vital board-level signal integrity benefits for high-reliability topologies.

• 4-Core Magnetics: The internal transformers and common-mode chokes utilize a 4-core topology, precision-tuned for 10/100Base-T transmission. This ensures pristine signal fidelity, minimized return loss, and aggressive suppression of common-mode noise across the twisted pairs.
• Galvanic Isolation: Delivers standard-compliant high-voltage electrical isolation between the external network cables and the sensitive internal PHY transceiver, guarding against ground loops and electrostatic discharge (ESD)—a critical safety requirement for patient-connected surgical equipment.
• AutoMDIX Support: The internal 1CT:1CT transformer architecture fully supports AutoMDIX protocols, allowing the physical layer to automatically negotiate and correct straight-through or crossover cable configurations without manual intervention.

Hardware Layout & Routing Considerations

To extract optimal performance from the LPJU3101AONL, PCB layout engineers must meticulously route the 100-ohm differential pairs for the Fast Ethernet PHY, as well as the 90-ohm differential pairs for the USB data lines. Because this is a stacked combo configuration, precise attention must be paid to trace separation to prevent crosstalk between the high-frequency USB signaling and the Ethernet data paths. Ensure that the chassis ground (tied to the connector’s continuous metal shield and EMI tabs) is robustly separated from the motherboard's digital ground plane to prevent capacitive noise coupling.

Typical Applications

Fusing commercial-grade thermal resilience (0°C to +70°C), robust EMI containment, and the extreme spatial efficiency of a stacked RJ45/USB architecture, the LPJU3101AONL is purpose-built for highly integrated, rugged electronic equipment:

• Medical & Health Care: Precision surgical equipment, patient monitoring terminals, and diagnostic imaging devices requiring strict galvanic isolation and localized USB connectivity.
• Consumer & Commercial Electronics: High-end digital cameras, interactive multimedia kiosks, and advanced audiovisual broadcasting systems.
• Networking Infrastructure: Edge routers, compact network firewalls, and localized gateway hubs for enterprise networks.
• Industrial & Automation: Embedded mainboards, automated logic controllers, and diagnostic I/O ports for localized automated machinery.