Authorized distributor for EM Microelectronics, WIZnet & DAVICOM serving Taiwan, China, and Hong Kong
Genuine components direct from leading semiconductor manufacturers
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 EM4126 is a passive UHF RFID tag IC from EM Microelectronics compliant with ISO/IEC 18000-63 and EPC Class-1 Gen2, with 224-bit memory (16-bit PC + 208-bit EPC/UII), operating across the global 860~960MHz UHF band with ~−19dBm chip read sensitivity and EPC serialization (SGTIN) — for supply chain, retail item-level tagging, and asset management.
The EM4205 is a 125kHz LF read/write RFID transponder from EM Microelectronics with a 512-bit EEPROM (16 words × 32-bit), supporting Manchester/Bi-phase encoding and 8/16/32/64 RF-clocks-per-bit data rates, with 32-bit password read/write protection and a read-only lock, compliant with ISO 11784/11785. Fully passive — common in animal ID, access control, and immobilizers. The EM4305 is the same function with enlarged coil pads.
The EM9304 is an ultra-low-power Bluetooth 4.2 Low Energy IC from EM Microelectronics, usable as a standalone SoC or as a BLE companion/co-processor to any host MCU. It embeds a 32-bit processor (with FPU), 128KB OTP, 48KB RAM (up to 20KB retention), a BLE controller+host in ROM with OTA (FOTA) update, and up to 8 simultaneous connections. Rx −94dBm, Tx −34~+6.1dBm, in WLCSP-25 / QFN-28.
The EM4124 is a passive UHF RAIN RFID tag IC from EM Microelectronic, compliant with EPC Class-1 Gen2 / ISO 18000-6C, operating across the 860~960MHz global UHF band. It holds 176-bit non-volatile memory (16-bit PC + 96-bit EPC + 32-bit Kill password + 32-bit Access password) plus a 64-bit factory-locked unique TID, with about −19dBm chip read sensitivity and wideband parallel-inductance antenna matching — for retail item tagging, supply-chain logistics, asset tracking, animal ear tags, and anti-counterfeiting.
Replacements, selection guides, and side-by-side comparisons — then request a quote.
Find a verified second source for STM32, W25Q, ENC28J60, DS3231 and more.
Browse cross-references →Pick by problem: SPI-to-Ethernet, RFID band, STM32→GD32, flash, RTC.
View solutions →Side-by-side "X vs Y" tables — W5500 vs ENC28J60, GD32 vs STM32, and more.
Compare parts →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 QuoteJLink Technology is an authorized distributor for WIZnet, EM Microelectronics, DAVICOM, GigaDevice, Micro Crystal, Fremont Micro Devices (FMD), On-Bright, TAEJIN Technology, KIWI Technology, and Huixin — serving Taiwan, Mainland China, and Hong Kong.
Yes. 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.
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