G4802CG

Overview

The G4802CG is a dual-port surface mount pulse transformer designed for 10/100/1000 Base-T Ethernet applications. It features a 1CT:1CT turns ratio and supports an operating temperature range of 0°C to +70°C. The component provides 1.5kV isolation voltage and includes integrated common mode chokes. Key electrical specifications include a maximum insertion loss of -1.4dB from 1-100MHz and minimum return loss values of -16dB at 1-30MHz and unspecified limits at 40MHz.

Feature Summary

• Dual-port magnetic design supporting Gigabit Ethernet speeds
• Integrated common mode choke functionality
• Surface mount package for automated assembly

Applications

• High-speed Ethernet network interfaces
• Power over Ethernet (PoE) systems
• Networking hardware ports

Procurement Notes

Verify the manufacturer designation carefully, as Mentech Technology USA Inc. may act as a distributor or sales entity while Dongguan Mentech Optical & Magnetic Co., Ltd. serves as the actual producer. Confirm that the ordering suffix matches the required version A0 specification. Ensure the component meets the specific isolation and insertion loss requirements for your target application before finalizing procurement.

Selection Notes

Select this component for designs requiring dual-port Gigabit Ethernet connectivity with integrated magnetics. The surface mount form factor suits high-volume manufacturing processes. Verify compatibility with the specific impedance requirements of the PHY chip in use. Consider the thermal operating range of 0°C to +70°C when evaluating environmental constraints for the final product deployment.

Part Context

This part belongs to the G4802 series of surface mount magnetics produced by Mentech. It is specifically engineered for LAN applications requiring compact solutions. The series includes variants like the G4812CG, indicating a family of similar dual-port transformers tailored for different networking standards and physical layout constraints within modern electronic devices.

Replacement Considerations

The G4812CG is a documented alternative within the same series. Verify pinout compatibility and electrical parameter alignment before substitution. No other public substitute part numbers are confirmed.