会社ブログについて Mingjiada Supplies RTL8111 Gigabit Ethernet Controllers: QFN-32 Package in Stock, Supports PCIe 1.1 and EEE Power Saving

Mingjiada Supplies the RTL8111 Gigabit Ethernet Controller: QFN-32 Package in Stock, Supporting PCIe 1.1 and EEE Power Saving

In the BOMs of products such as motherboards, industrial PCs, embedded devices, and NAS systems, the selection of a Gigabit Ethernet controller directly impacts network connection stability and overall power consumption. As a mature model in the RTL8111 series designed for mainstream PCIe applications, the Realtek RTL8111H continues to feature in numerous mass-production designs thanks to its highly integrated architecture and excellent driver compatibility. Mingjiada Electronics maintains a long-term stock of the RTL8111H-CG, providing procurement and R&D teams with access to genuine, factory-direct products and rapid delivery support.

What Is the RTL8111H: A Single Chip Integrating MAC, PHY, and PCIe Interface

The RTL8111H-CG integrates a tri-speed IEEE 802.3-compliant Media Access Controller (MAC), a tri-speed Ethernet Transceiver (PHY), a PCI Express bus controller, and embedded memory onto a single chip. The chip supports 10/100/1000 Mbps three-speed adaptive transmission and is compatible with 500 Mbps Giga-Lite mode, handling host communication over the PCI Express 1.1 bus.

At the signal processing level, the RTL8111H incorporates built-in functions such as crosstalk detection and automatic correction, polarity correction, adaptive equalization, crosstalk cancellation, and echo cancellation, ensuring the reliability of high-speed links over CAT 5 UTP cable; it is also compatible with CAT 3 UTP cable in 10 Mbps mode. The RTL8111H version integrates an LDO regulator, while the RTL8111HS version integrates a switching regulator; users can flexibly choose between the two based on their power supply architecture.

RTL8111H-CG Key Specifications

Network Speed: 10/100/1000 Mbps, supports 500M Giga-Lite mode

Bus Interface: PCI Express 1.1, 100 MHz differential clock

Package: QFN-32-EP (4×4 mm)

Supply Voltage: 3.3 V (3.14–3.46 V), Core 1.0 V (0.95–1.05 V)

Regulator: Integrated LDO (RTL8111H version)

Operating Temperature: 0°C to +70°C (commercial grade)

Power-Saving Features: IEEE 802.3az-2010 (EEE), PCIe L1.Off / L1.Snooze

Protocol Offloading: ARP (IPv4) and NS (IPv6) offloaded in D3 power-saving state

Eco-Friendly Packaging: 32-pin QFN “green” package

Mingjiada Electronics’ RTL8111H Stock Availability

Founded in 1996, Mingjiada Electronics is an authorized independent distributor of electronic components headquartered in Shenzhen. It has long supplied Realtek Ethernet ICs, and the RTL8111H is one of the standard in-stock models in its Gigabit PCIe controller product line. For the RTL8111H, Mingjiada provides the following supply support:

Genuine, factory-direct sourcing. Mingjiada has established long-term partnerships with international manufacturers such as Infineon, ST, TI, and NXP. The source of the RTL8111H is fully traceable, reducing the risk of mixed or refurbished components on the procurement side.

Support for both small-batch and mass production. Warehouses in multiple locations across Shenzhen and Hong Kong support small-batch requests during the sample phase as well as bulk purchases during mass production, ensuring controllable lead times.

Typical Application Scenarios

The RTL8111H’s positioning means it is found in a wide range of devices that require a basic networking experience but do not pursue the extreme bandwidth limits of 2.5G or 5G:

Desktop and consumer-grade motherboards. As a common solution for onboard Gigabit Ethernet on mainstream motherboards, the RTL8111H has highly mature drivers for both Windows and Linux, making it suitable for high-volume consumer-grade platforms.

Industrial control and embedded motherboards. Its compact QFN-32 (4×4 mm) package and 3.3V single-supply architecture make it easy to integrate into space-constrained industrial control motherboards and embedded carrier boards. The RTL8111H is featured in the onboard designs of embedded and industrial control motherboard products from manufacturers such as Lingyi Technology and Jiebo.

NAS, software routers, and network-attached devices. The chip supports 9K jumbo frames, hardware checksum offloading, and protocol offloading, which reduces the CPU’s load for pure network throughput in NAS and software router scenarios.

Auxiliary network ports for servers and communications platforms. In servers or communications equipment that do not require high bandwidth but need a stable management channel, the RTL8111H serves as a cost-effective solution for management ports or auxiliary network ports.

Contact Mingjiada for RTL8111H Quotes and Samples

To confirm stock availability, request samples, or obtain bulk quotes for the RTL8111H-CG, please contact the Mingjiada Electronics sales team directly:

Website: www.integrated-ic.com

Phone: +86 13410018555

Email: sales@hkmjd.com

Address: 1239-1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen

Tags: RTL8111H, RTL8111

Mingjiada Electronics also supplies other models in the RTL8111 series, as well as Realtek Ethernet PHYs and switch chips, allowing you to centrally source all network card-related components through a single procurement channel.