Jsab Tech

JSAB Technologies Limited (安建科技) is a power semiconductor company engaged in the research, design, manufacturing and sale of power devices. Its portfolio spans four product lines: high-voltage IGBTs in both discrete and module form; low- and mid-voltage MOSFETs based on SGT-MOS and SJ-MOS technologies, including an automotive-grade SGT-MOS family; silicon carbide products covering diodes, MOSFETs and modules; and gallium nitride HEMT devices. The company positions these as a full-line power device solution for customers seeking domestically produced alternatives to established international brands, and states that its IGBT parts are pin- and performance-compatible with well-known foreign products to ease design-in.

Applications cited by the company include high-speed rail, electric vehicles, new energy generation such as photovoltaic inverters and wind power, industrial control, power conversion, embodied intelligence/robotics, 5G communications, AI servers, energy-efficient home appliances and consumer electronics. Specific end uses named for its MOSFET lines include motor drives in drones, e-bikes, power tools and electric toothbrushes, phone chargers, notebook adapters, TV power supplies, telecom and server power, solar, EV charging piles, uninterruptible power supplies and LED drivers. IGBT products use a trench field-stop (Trench-FS) structure, and the company highlights low conduction loss, parameter consistency, high power density and multiple package options.

The company operates a distributed footprint in Greater China and Hong Kong, with entities and sites identified as Ningbo (including the Jisai module plant), Suzhou, Hong Kong, Shenzhen and Chengdu. It states an objective of becoming a leading power semiconductor company in the Greater China region.

Founding story

The company's name, JSAB, is given as an acronym for "Johnny Sin And Buddies" — a reference to Johnny Sin (单建安) and his colleagues. The venture is led by a Hong Kong University of Science and Technology professor who is an IEEE Fellow, supported by a technical team with long-standing industry experience.

Business model

JSAB designs, manufactures and sells discrete power semiconductors and power modules to equipment makers, deriving revenue from component sales across its IGBT, MOSFET, SiC and GaN product lines. Wafer fabrication is at least partly outsourced: its 1200V SiC MOSFET is described as being taped out at a leading domestic silicon carbide wafer foundry, while the company also operates its own module plant in Ningbo.

Sales of power semiconductor devices and modules, including discrete transistors and packaged power modules, to industrial, automotive, energy, communications and consumer electronics customers.

Traction

The company reports recurring new-product introductions from 2023 through 2026, including a 750V/340A TPAK IGBT for passenger-car electric drives, a 1200V/17mΩ SiC MOSFET, successive 150V, 120V and 200V SGT MOSFET platforms, a second-generation 30V DFN MOSFET family and a fast-recovery R-series SGT-MOS. It also cites recognition in the 2020 China Innovation and Entrepreneurship Competition (fourth place in the Guangdong regional next-generation information technology category and a national-level outstanding enterprise award), 2023 Shenzhen specialized-SME certification, 2025 national "Little Giant" certification, and a twenty-year customer relationship with Veichi Electric.

Latest developments

In August 2026 the company announced a next-generation fast-recovery SGT-MOS R series with reverse recovery charge reduced by 78%, aimed at communications power, data-center server and high-power-density industrial power supplies. In October 2025 it attended Veichi Electric's 20th anniversary celebration in Suzhou as an invited partner, and in 2025 it obtained national-level "Little Giant" specialized SME certification.