G5009CG Gigabit Ethernet Magnetic Module Overview

G5009CG Ethernet Transformer is a high-performance 1000BASE-T Gigabit Ethernet isolation transformer designed for single-port Ethernet interfaces. It provides excellent signal integrity, high common-mode noise suppression, and robust galvanic isolation, making it ideal for Gigabit Ethernet PHY designs in switches, routers, network interface cards, and industrial communication equipment.

This model is widely used as an equivalent replacement for LP82440ANL, offering full IEEE 802.3ab compliance and stable performance across commercial and industrial temperature ranges.

Key Features

✔ Compliant with IEEE 802.3ab 1000BASE-T standard

✔ 1CT:1CT turns ratio, optimized for Gigabit PHYs

✔ Excellent insertion loss, return loss, and crosstalk performance

✔ High 1500 Vrms isolation voltage for system safety

✔ Surface-mount (SMT) package for automated assembly

✔ Wide operating temperature: -40°C to +85°C

✔ Suitable for PoE-capable Ethernet designs

G5009CG 1000Base-T Magnetics Module Specifications:

LP82440ANL (G5009CG) Transformer Drawing

LP82440ANL.pdf

Compatibility & Design Notes

• Fully compatible with mainstream Gigabit PHYs from Broadcom, Marvell, Realtek, Microchip, and similar vendors
• Optimized for short-reach PCB trace routing between PHY and magnetics
• Recommended to follow standard Ethernet layout guidelines for EMI and return loss optimization
• Can be used in discrete magnetics designs or paired with RJ45 connectors (non-integrated MagJack architectures)

G5009CG 1000Base-T Magnetics Applications:

• NIC (Network Interface Card): Enhances network performance and stability.
• HUB: Provides reliable Ethernet connectivity for networking hubs.
• Switch: Ensures efficient data transmission in network switches.
• Router: Supports fast and secure connections in routers.
• PC System: Improves network speed and reliability in personal computers.
• Printer: Enables networked printing with stable connections.
• Server: Ensures high-speed data transfer and communication in server environments.