SG Micro
Chinese semiconductor company specializing in analog integrated circuits.
Last updated November 4, 2026
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Overview
SG Micro is a publicly listed Chinese semiconductor company headquartered in Beijing. Its business is centered on the design and sale of analog integrated circuits, including power-management and signal-chain products used in consumer, industrial, and other electronic applications. The company operates as a fabless chip designer: the available reference material describes its main activity as analog-chip development, but does not identify a proprietary wafer-fabrication network or provide a complete manufacturing-partner list. The company was founded in 2007 by Zhang Shilong, who had previously worked for Texas Instruments. During its first decade, SG Micro concentrated on research and development rather than pursuing rapid commercial scale. This period established the technical base for its later expansion in China’s analog-semiconductor market. In 2017, the company completed an initial public offering and became listed on the Shenzhen Stock Exchange under ticker 300661.SZ. After the listing, its stated direction shifted toward increasing business scale while continuing to develop its analog product portfolio. SG Micro expanded its domestic technical capabilities through corporate transactions. In 2018, it acquired peer company Alpha Analog Technology, a move described as strengthening its local research-and-development team. In 2019, it invested in ETA Solutions to improve its position in China’s analog-chip sector. These actions complemented internal development by adding personnel, expertise, and market access in a field where product breadth and application-specific design capability are important competitive factors. The company’s portfolio is associated primarily with power-management integrated circuits and signal-chain devices. Power-management products can be used to regulate, convert, monitor, or distribute electrical power inside electronic systems, while signal-chain products process or condition analog signals between sensors, processors, and other components. The available industry reference indicates that in 2021 SG Micro’s power-management products represented approximately 30% of China’s handset market and 30% of the country’s non-handset consumer-electronics market, as well as approximately 40% of the industrial market. These figures are attributed to an industry report and are market-share claims rather than SG Micro’s reported company revenue. SG Micro also received attention in 2022 when reports stated that its components had passed quality certification for Apple’s iPhone 14 Pro models and were expected to become part of Apple’s high-end supply chain. The reference material does not specify the exact components, volumes, contractual terms, or whether the relationship extended beyond qualification. Accordingly, the Apple-related development is best understood as a reported supplier-qualification milestone rather than evidence of a fully quantified commercial relationship. The available sources provide limited information about current executives, revenue, manufacturing arrangements, geographic sales mix, consumer-facing product names, and the company’s present operating status beyond its identity as a listed Chinese analog-chip company. SG Micro’s documented development nevertheless follows a clear progression: technical formation after its 2007 founding, public-market financing in 2017, capability expansion through the 2018 acquisition and 2019 investment, and increased visibility in handset, industrial, and high-end consumer-electronics supply chains.
History
SG Micro was established in 2007 by Zhang Shilong, a former Texas Instruments employee, in Beijing, China. Its early development was characterized by a strong emphasis on research and development. For roughly the first ten years of its existence, the company focused on building analog-chip design capability rather than prioritizing rapid expansion of commercial scale. A major corporate milestone came in 2017, when SG Micro completed its initial public offering and became listed on the Shenzhen Stock Exchange. The listing provided a public-market platform for the company as it moved into a phase focused more directly on expanding its business scale. Its principal field remained analog integrated circuits, with power-management and signal-chain products forming the core of its documented activities. SG Micro subsequently pursued external expansion alongside internal research. In 2018, it acquired Alpha Analog Technology, a peer company, with the stated purpose of strengthening its domestic research-and-development team. In 2019, SG Micro invested in ETA Solutions to reinforce its position in China’s analog-chip industry. These transactions reflected a strategy of augmenting its technical and market capabilities through both acquisition and investment. The company’s market relevance increased as demand for domestically designed analog semiconductors grew across mobile devices, consumer electronics, and industrial equipment. An industry report cited in the available reference material attributed substantial 2021 market shares to SG Micro’s power-management integrated circuits: approximately 30% in China’s handset market, approximately 30% in non-handset consumer electronics, and approximately 40% in industrial applications. The source does not provide the methodology, product segmentation, or underlying sales figures, so these percentages should be treated as reported industry estimates. In 2022, reports indicated that SG Micro components had passed quality certification for Apple’s iPhone 14 Pro models and were expected to become suppliers for Apple’s high-end products. The material available here does not identify the exact parts, production volumes, commercial value, or duration of the reported relationship. The development nevertheless marked a notable indication that SG Micro’s products were being evaluated for demanding premium-device applications. The available reference material does not establish a detailed chronology of later management changes, product launches, financial results, production partners, or international subsidiaries. It does establish SG Micro as an active, listed Chinese analog-semiconductor company whose development progressed from a research-led startup, through public listing and capability-building transactions, toward broader participation in handset, consumer-electronics, industrial, and reported premium-device supply chains.
- 2022
Reported iPhone 14 Pro qualification
[1]Reports said SG Micro components passed quality certification for iPhone 14 Pro models and could enter Apple’s high-end supply chain.
- 2021
Reported power-management market position
[1]An industry report attributed approximately 30% shares in China’s handset and non-handset consumer-electronics markets and approximately 40% in the industrial market to SG Micro’s power-management products.
- 2019
Investment in ETA Solutions
[1]SG Micro invested in ETA Solutions to strengthen its position in China’s analog-semiconductor sector.
- 2018
Acquisition of Alpha Analog Technology
[1]The acquisition expanded SG Micro’s local analog-chip research-and-development capabilities.
- 2017
Initial public offering
[1]SG Micro completed its initial public offering and became listed on the Shenzhen Stock Exchange.
- 2007
Company founded
[1]Zhang Shilong founded SG Micro in China after working at Texas Instruments.
Products and positioning
A Chinese analog semiconductor designer focused on power-management and signal-chain integrated circuits for handset, consumer-electronics, industrial, and other electronic applications.
Analog semiconductors
Power-management integrated circuits
SG Micro’s documented portfolio includes power-management ICs used to control, regulate, convert, monitor, or distribute electrical power within electronic systems. The available reference connects these products with handset, non-handset consumer-electronics, and industrial markets. No complete list of individual part numbers or product families is provided.
Analog semiconductors
Signal-chain integrated circuits
Signal-chain ICs form another core category associated with SG Micro. Such analog devices generally condition, amplify, switch, monitor, or otherwise process signals moving between sensors, processors, and system components. The reference material identifies the category but does not specify individual products, launch dates, or application-specific series.
Controversies
2019
SG Micro major shareholder illegally reduces stake; director in short-swing trade, targeted by Shenzhen Stock Exchange and Beijing CSRC
On February 27, 2019, IPV Capital I HK Limited, a shareholder holding more than 5% of SG Micro, reduced 87,500 shares without pre-disclosure 15 trading days in advance, violating its IPO commitment; the Shenzhen Stock Exchange issued ChiNext regulatory letter No. 40 [2019], and the Beijing CSRC issued warning letter No. 156 [2019]; the shareholder apologized and paid 1% of the reduction amount to the company. On May 22, 2019, the account of director and senior executive Zhang Qin (due to his spouse's erroneous operation) sold 2,000 shares and then bought 2,000 shares the same day, constituting short-swing trading and failure to pre-disclose; the Shenzhen Stock Exchange issued a regulatory letter, and the Beijing CSRC issued warning letter No. 111 [2019]. In addition, media reported that in 2025–2026 director Lin Lin reduced about 7.887 million shares and cashed out about RMB 565 million, and was questioned over possible short-swing trading, with no regulatory conclusion seen. Progress: regulatory measures. Subjects: SG Micro Corp., IPV Capital I HK Limited, Zhang Qin (director, senior executive). Scope: share reductions by SG Micro shareholders and directors, supervisors, and senior management.
Brand decisions
2022
Pursue reported qualification for Apple’s iPhone 14 Pro supply chainProduct launchBackground
SG Micro sought to extend the use of its analog components into premium smartphone applications.
Action taken
Reports stated that SG Micro components passed quality certification for iPhone 14 Pro models.
Aftermath
The reports indicated that SG Micro would become a supplier for Apple’s high-end products, although the available source does not confirm volumes, contract terms, or the precise components involved.
2019
Invest in ETA SolutionsM&ABackground
SG Micro aimed to improve its competitive position in China’s analog-chip sector.
Action taken
The company invested in ETA Solutions.
Aftermath
The reference characterizes the investment as supporting SG Micro’s position in the local analog-semiconductor market but provides no investment amount or later performance data.
2018
Acquire Alpha Analog TechnologyM&ABackground
SG Micro sought to expand its domestic analog-semiconductor research-and-development capabilities after entering its post-listing growth phase.
Action taken
The company acquired peer company Alpha Analog Technology.
Aftermath
The available source describes the transaction as expanding SG Micro’s local research-and-development team but gives no financial terms or subsequent operating metrics.
Recent events
Reported
Shengbang terminated the Yutai Semiconductor acquisition[4]
Shengbang announced that it had terminated its planned purchase of a 71.3% stake in Yutai Semiconductor and applied to withdraw the related application documents from the Shenzhen Stock Exchange.
Reported
Shengbang Microelectronics filed a revised draft for its proposed acquisition of 71.3% of Yutai Semiconductor[5]
Shengbang Microelectronics filed a revised draft for its proposed acquisition of a 71.3% stake in Yutai Semiconductor; the article describes the acquisition as ongoing.
Reported
SG Micro disclosed its 2019 earnings forecast[6]
SG Micro disclosed a forecast that its 2019 net profit attributable to shareholders would reach RMB 160–180 million, up 55–75% year over year.
Sources6 sources
- 1SG Micro - Wikipediaen.wikipedia.org
- 2SG Micro major shareholder illegally reduces stake; director in short-swing trade, targeted by Shenzhen Stock Exchange and Beijing CSRCvip.stock.finance.sina.com.cn
- 3SG Micro major shareholder illegally reduces stake; director in short-swing trade, targeted by Shenzhen Stock Exchange and Beijing CSRCmoomoo.com
- 4圣邦股份终止收购钰泰半导体finance.sina.com.cn
- 5圣邦股份发布收购钰泰半导体71.3%股权草案修订稿finance.sina.com.cn
- 6圣邦股份披露2019年业绩预告finance.sina.com.cn
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