SMT Magnetic Jack RJ45 1000BASE-T — RJ45-L1X03YG 1×1 Gigabit Ethernet Connector with Integrated Magnetics & Dual LEDs for High-Speed Networking
SMT Magnetic Jack RJ45 1000BASE-T — RJ45-L1X03YG Product Overview
The RJ45-L1X03YG is a SMT magnetic jack RJ45 1000BASE-T engineered for high-speed Gigabit Ethernet connectivity in space-constrained PCB designs. This 1×1 port, 8-pin surface-mount connector integrates all necessary magnetic components — including isolation transformers, common-mode chokes, and termination resistors — directly into the jack housing, eliminating the need for external magnetics and reducing overall BOM complexity[reference:0].
As a surface mount RJ45 with integrated magnetics, the RJ45-L1X03YG supports 10/100/1000BASE-T Ethernet over Category 5e and 6 unshielded twisted pair (UTP) cable[reference:1]. The integrated magnetics provide electrical isolation up to 1500VAC, EMI suppression, and impedance matching — ensuring signal integrity across the full Gigabit Ethernet frequency range. The dual LED indicators (green and yellow) deliver at-a-glance link and activity status, simplifying system diagnostics and user interface design.
This 1000BASE-T RJ45 jack with LEDs is rated for 1.5A at 125VAC with a contact resistance of ≤30mΩ, and is designed for SMT reflow soldering processes[reference:2]. The 30N insertion and withdrawal force ensures secure cable retention while maintaining ease of plugging and unplugging. Housed in a high-temperature nylon (UL94V-0) insulator with a shielded metal shell, the RJ45-L1X03YG delivers robust EMC performance and mechanical durability for networking equipment, industrial automation, and consumer electronics.
RJ45-L1X03YG Gigabit Ethernet Connector — Full Technical Specifications
| Parameter | Value | Notes |
|---|---|---|
| Part Number | RJ45-L1X03YG | Standard catalog item |
| Product Type | SMT Magnetic Jack — 1×1 Port | Single-port Gigabit Ethernet |
| Ethernet Standard | 10/100/1000BASE-T | IEEE 802.3 compliant |
| Pin Count | 8 Pins | Standard RJ45 interface |
| Mount Type | Surface Mount (SMT) | Reflow soldering compatible |
| Integrated Magnetics | Yes — Transformers + Chokes + Resistors | No external magnetics required |
| LED Indicators | Dual LEDs — Green & Yellow | Link/Activity status |
| Current Rating | 1.5A | Per contact |
| Voltage Rating | 125VAC | Maximum operating voltage |
| Contact Resistance | ≤ 30mΩ (initial) | Low-resistance signal path |
| Insulation Resistance | ≥ 500MΩ at 500VDC | High isolation between contacts |
| Dielectric Withstanding Voltage | 1500VAC (RMS) | 1 minute — isolation barrier |
| Insertion Force | ≤ 30N | Maximum insertion force |
| Withdrawal Force | ≥ 30N | Minimum retention force |
| Durability | 750 mating cycles min. | Mechanical endurance[reference:3] |
| Operating Temperature | 0°C to +70°C | Commercial grade[reference:4] |
| Storage Temperature | −40°C to +85°C | —[reference:5] |
| Housing Material | Nylon GF (UL94V-0) | Flame-retardant thermoplastic[reference:6] |
| Shielding | Metal shell with grounding tabs | EMI suppression[reference:7] |
| Packaging | Tray / Bag | Production ready |
Why Engineers Choose the RJ45-L1X03YG Surface Mount RJ45 with Integrated Magnetics for Gigabit Ethernet Designs
Integrated Magnetics — Reduce BOM, Save PCB Space
The RJ45-L1X03YG integrates all magnetic components — isolation transformers, common-mode chokes, and termination resistors — directly inside the connector housing. This eliminates the need for external magnetic modules, reducing PCB footprint by up to 50% and simplifying the overall design. As a surface mount RJ45 with integrated magnetics, it streamlines procurement, assembly, and inventory management.
1000BASE-T Gigabit Performance — Full IEEE 802.3 Compliance
This SMT RJ45 connector 1.5A 125VAC supports full Gigabit Ethernet (10/100/1000BASE-T) over Category 5e and 6 cabling[reference:8]. The integrated magnetics are tuned for 1000BASE-T signaling, delivering insertion loss of ≤1.0dB (1-80MHz) and return loss meeting IEEE 802.3 specifications. Whether you’re designing switches, routers, or embedded systems, the RJ45-L1X03YG ensures reliable Gigabit performance.
30N Insertion Force — Secure Cable Retention with Easy Mating
With a maximum insertion force of 30N and a minimum withdrawal force of 30N[reference:9], the RJ45-L1X03YG provides a secure, tactile connection that prevents accidental cable disconnection while remaining easy to plug and unplug. This balanced force profile is ideal for applications where cables are frequently connected and disconnected.
Dual Green/Yellow LEDs — At-a-Glance Link & Activity Status
The integrated dual LEDs — green for link status and yellow for activity — provide immediate visual feedback on network connectivity. This eliminates the need for external LED indicators, reducing PCB component count and simplifying panel design. The LEDs are driven by the PHY’s LED outputs, with standard current-limiting resistors integrated into the design.
EMI Shielded — Excellent Electromagnetic Interference Suppression
The metal shell with grounding tabs provides effective EMI shielding[reference:10][reference:11], minimizing radiated emissions and ensuring compliance with FCC and CE electromagnetic compatibility requirements. The integrated common-mode chokes further reduce conducted EMI, making the RJ45-L1X03YG suitable for applications with stringent EMC requirements.
RoHS Compliant & 750-Cycle Durability — Built for Production
Fully RoHS compliant, the RJ45-L1X03YG meets global environmental regulations[reference:12]. With a minimum of 750 mating cycles[reference:13], it delivers the durability required for commercial and industrial applications. The high-temperature nylon housing (UL94V-0)[reference:14] withstands reflow soldering profiles, ensuring reliable assembly in high-volume production.
Where to Use the 1000BASE-T RJ45 Jack with LEDs — Applications for Networking, Industrial & Consumer Electronics
RJ45-L1X03YG Mechanical Dimensions & PCB Layout — SMT Gigabit Ethernet Jack
The RJ45-L1X03YG Gigabit Ethernet connector features a compact SMT footprint optimized for high-density PCB layouts. Typical dimensions for this 1×1 port configuration are approximately 21.72mm × 16.26mm × 14.10mm (L × W × H)[reference:15], with the RJ45 tab facing downward for standard panel mounting. The 8 surface-mount pads are arranged in a dual-row configuration compatible with standard pick-and-place equipment and reflow soldering processes.
The metal shielding shell includes four grounding tabs that solder to PCB ground pads, providing both mechanical stability and EMI shielding. The dual LEDs are positioned at the top of the jack, visible from the front panel. The LED pins are also surface-mount, with standard 2.54mm pitch spacing for easy routing to the PHY’s LED driver outputs.
PCB layout recommendations include a 1.6mm board thickness, with the connector footprint matching the standard RJ45 SMT landing pattern. The integrated magnetics require no external components — simply route the 8 differential signal pairs (4 pairs for 1000BASE-T) from the PHY to the connector pins, with 100Ω differential impedance controlled routing.
Quality Assurance & Compliance — SMT Magnetic Jack RJ45 1000BASE-T for Reliable Gigabit Connectivity
As a SMT magnetic jack RJ45 1000BASE-T, the RJ45-L1X03YG is manufactured under rigorous quality controls to meet the demands of high-speed networking applications. The integrated magnetics are precision-wound and tested for inductance (350μH minimum at 100kHz/0.1V with 8mA bias)[reference:16], insertion loss, return loss, and crosstalk — ensuring full compliance with IEEE 802.3 1000BASE-T specifications.
The connector undergoes 100% electrical testing, including contact resistance, insulation resistance, and dielectric withstanding voltage (1500VAC). Mechanical testing includes insertion/withdrawal force verification and 750-cycle durability testing[reference:17]. The housing material — nylon GF with UL94V-0 flammability rating[reference:18] — ensures fire safety and thermal stability across the 0°C to +70°C operating temperature range[reference:19].
Environmental compliance includes RoHS and REACH, making the RJ45-L1X03YG suitable for global export to North America, Europe, and Asia. The component is also compatible with lead-free reflow soldering profiles (JEDEC J-STD-020), ensuring reliable solder joints in high-volume production environments.
RJ45-L1X03YG SMT Magnetic Jack RJ45 1000BASE-T — Frequently Asked Questions
What is the difference between an SMT magnetic jack and a standard RJ45 connector?
A standard RJ45 connector is a passive mechanical interface that requires external magnetic components (transformers, chokes, resistors) to be placed on the PCB for Ethernet signal conditioning. This increases PCB footprint, BOM complexity, and assembly cost.
An SMT magnetic jack like the RJ45-L1X03YG integrates all necessary magnetic components directly inside the connector housing[reference:20]. This saves PCB space, reduces component count, simplifies design, and improves signal integrity by minimizing the distance between the magnetics and the connector pins. The RJ45-L1X03YG is a complete Gigabit Ethernet interface solution in a single surface-mount component.
What Ethernet speeds does the RJ45-L1X03YG support?
The RJ45-L1X03YG supports 10/100/1000BASE-T Gigabit Ethernet[reference:21][reference:22]. It is fully compliant with IEEE 802.3 standards for all three speeds, with integrated magnetics tuned for 1000BASE-T performance. The connector is backward compatible with 10BASE-T and 100BASE-TX networks, automatically negotiating the highest common speed with the link partner.
What is the MOQ and can I get a free sample?
Standard MOQ is 1,000 pieces with a 2–4 week production lead time. Free samples are available for qualified engineering and product development projects. Contact sales@vistarelectronics.com with your company details, project application, and part number (RJ45-L1X03YG), or click the “Get a Quote” button at the top of this page.
Is the RJ45-L1X03YG compatible with PoE (Power over Ethernet)?
The RJ45-L1X03YG is primarily designed for data-only Gigabit Ethernet applications. For Power over Ethernet (PoE) applications — where power is delivered over the same Ethernet cable — please consult Vistar Electronics for PoE-rated magnetic jack variants. The RJ45-L1X03YG can be used in non-PoE applications or in PoE systems where power is injected externally (midspan) rather than through the connector’s magnetics.
What is the operating temperature range and durability?
The RJ45-L1X03YG operates reliably across 0°C to +70°C[reference:23], with a storage temperature range of −40°C to +85°C[reference:24]. The connector is rated for a minimum of 750 mating cycles[reference:25], ensuring long-term reliability in applications where cables are frequently plugged and unplugged. The housing material (nylon GF, UL94V-0)[reference:26] provides thermal stability and flame retardancy.
Additional Resources & Technical References
RJ45 One – Port Connector Sink Plate for Reliable Network Connectivity
Modular jack RJ45 Shielded 8p8c mid mount
Multi-port RJ45 Jack 2×1 with leds
RJ45 SMT Connector 8P8C Single Port — Shielded RJ45 Modular Jack for 10/100/1000BASE-T Ethernet Networking, Industrial Control & Embedded Systems
RJ45 jack connector mid-mount 8p8c
RJ45 Female Jack 8P8C Vertical PCB Mount Connector
RJ45 shielded jack single port DIP 8pin
Magnetic RJ45 Jack Shielded DIP Angled
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