Authorized distributor for EM Microelectronics, WIZnet & DAVICOM serving Taiwan, China, and Hong Kong
Genuine components direct from leading semiconductor manufacturers
Ultra-low power IC / RFID 
Hardwired TCP/IP Ethernet 
Ethernet controllers / PHY 
Flash memory / MCU 
RTC / quartz timing 
EEPROM / touch MCU 
IoT / LPWAN comms 
Power management IC 
Power / analog IC 
Semiconductor components Genuine components direct from manufacturers
Ultra-Low Power ICs — Semiconductor brand of the Swatch Group
EM Microelectronics is a semiconductor subsidiary of the Swatch Group of Switzerland, specializing in ultra-low power CMOS IC design and manufacturing. Product lines include ultra-low power MCUs, NFC/RFID ICs, LCD driver ICs, energy harvesting ICs, and sensor ICs. Widely used in smart watches, wearables, smart cards, IoT sensor nodes, and medical devices.
Hardwired TCP/IP Ethernet ICs & PoE Modules
WIZnet is a renowned Korean semiconductor company known worldwide for its patented "hardwired TCP/IP stack" technology. The flagship W5500 is widely adopted in Arduino, Raspberry Pi, and industrial embedded communities. Product lines include Ethernet controller ICs, network modules, and PoE powered device modules for Industrial IoT, IP cameras, factory automation, and smart home applications.
Highly-Integrated Fast Ethernet Controllers & PHYs
DAVICOM Semiconductor Inc. is a Taiwanese semiconductor company specializing in Ethernet controller and PHY chip design. The DM9000/DM9051 series is widely used in the embedded Linux community (u-boot, Linux kernel) and is the mainstream Ethernet chip choice for mid-range industrial boards and ARM SoC development boards.
Browse our complete range of semiconductor components
The EM6819 is an ultra-low power 8-bit RISC microcontroller from EM Microelectronics. Built on CMOS process, it operates down to 0.9V and achieves nA-level sleep current. Features integrated LCD driver, timers, ADC, and rich peripherals — ideal for battery-powered consumer electronics and smart card applications.
The EM9301 is a single-mode Bluetooth 4.0 Low Energy (BLE) controller IC designed for ultra-low power applications. It communicates with the host MCU via SPI, integrates the RF front-end and baseband, and provides a complete BLE link layer — ideal for wearables, sensors, and beacons requiring extremely low operating current.
EM4305 is a 125kHz low-frequency RFID read/write transponder IC powered by the inductive coil. Supports ASK/FSK/PSK modulation with 512-bit EEPROM — widely used in access control cards, employee ID cards, animal identification, and industrial tracking.
W5500 is WIZnet's flagship Ethernet controller with a unique hardwired TCP/IP stack, enabling direct network connectivity without software TCP/IP implementation. Connects to the host MCU via SPI, features 32KB TX/RX buffer, supports up to 8 sockets — the most widely adopted Ethernet chip in the Arduino/Raspberry Pi ecosystem.
Spanning consumer electronics to industrial automation
EM Micro ultra-low power MCU + WIZnet networking IC for energy-efficient connected endpoints
WIZnet hardwired TCP/IP ensures stable industrial device connectivity with Modbus/TCP support
Complete Ethernet IC supply for IP cameras, access control, and security systems
WIZPoE modules provide IEEE 802.3af/at standard PoE powered device solutions
CyberLib self-service library system deployed in multiple major Taiwan libraries
Core IC supply for RFID readers, wireless mice, remote controls, and consumer devices
Direct procurement from manufacturers guarantees product authenticity, quality, and access to official technical documentation.
Senior engineers provide component selection guidance, reference circuit design, driver code, and application troubleshooting.
From prototype samples to mass production quantities — fast quotes and flexible delivery scheduling.
Full service in Taiwan, Mainland China, and Hong Kong. One contact for all cross-regional procurement.
Submit an RFQ and receive a quote within one business day.
Request a QuoteYes. JLink Technology (傑聯特科技) is an authorized distributor for EM Microelectronics in Taiwan, China, and Hong Kong, providing genuine components, datasheets, and factory-backed technical support.
JLink Technology is an authorized WIZnet distributor in Taiwan and the Greater China region. Contact us for pricing, availability, and technical support for W5500, W5100S, WIZPoE-P1, and other WIZnet products.
Yes. JLink Technology supports orders from prototype samples to mass production quantities. Submit an RFQ with your requirements and we will respond within one business day.