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About WPM

Shanghai Weipan Microelectronics Co., Ltd. was established in September 2007. It is a high-tech company specializing in the design and application of semiconductor power integrated circuits and discrete component chips. After nearly 20 years of development, the company's product quality and company service concept have been recognized and trusted by our customers. Weipan Microelectronics products have been developed around the protection of interface circuits. After nearly 20 years of hard work, the product range has been very complete. The company has 8 major categories of products: electrostatic protection devices, high-power protection devices, non-semiconductor protection devices, radio frequency devices, transistors, field effect transistors, rectifier products, power modules and power management chips. The company is headquartered in Caohejing Emerging Industry High-tech Park, Shanghai, China, with branches in Wuxi, Nanjing, and Taiwan, and offices in Shenzhen and Singapore.

Our Vision

With the development of China's integrated circuit and electronics industry, numerous design companies and electronic equipment manufacturers with independent intellectual property rights have emerged in Chinese Mainland amidst fierce competition.

The development of the electronics industry has been accompanied by advancements in integrated circuit (IC) processing technology, with feature line dimensions entering the nanometer era. With increasingly refined processes, electrostatic hazards have gradually become a fatal flaw for ICs and electronic products, posing a significant obstacle to the advancement of Chinese electronic products.

With the increasing coverage of applications such as smart homes, safe cities, smart home systems, and electric vehicles, more and more electronic and electrical equipment needs to be exposed to outdoor environments. Overvoltage surge pulses caused by lightning pose a constant threat to the safety of these devices.

Weipan Microelectronics is a high-tech enterprise that provides customers with electrostatic and lightning surge protection products and solutions.

We provide the following products and services to customers in the integrated circuit and electronics industry:

  • Provide the industry with the TSPD series of thyristor protection devices
  • Provide the industry with a series of Transient Voltage Suppressors (TVS) products
  • Provide customers with ESD/EMI series products for electrostatic and electromagnetic radiation suppression
  • Provide customers with an integrated series of overcurrent and overvoltage protectors
  • Provide customers with IC series products that are more resistant to static electricity and surge
  • Provide customers with comprehensive solutions for anti-static and anti-surge protection
  • Provide customers with laboratory testing services for static electricity and surge
  • Provide customers with usage environment analysis and solutions
  • Provide customers with ESD and surge failure mode analysis and solutions.

DEVELOPMENT PATH OF WEIPAN

2025

Launched 12v/15v/24v/30v flyback TVS protection TYPE-C port solution

2023

Launched 30v/36v/48v ESD/EOS protection USB PD 3.1 component series

2021

Established Wuxi R&D company and Nanjing operating company

2020

Establish a cooperative packaging factory

2019

Weipan Microelectronics Co., Ltd. was established in Taoyuan, Taiwan

2018

Launched DFN1006/DFN0603 products

2017

Launch of Low Clamping Voltage products

2016

Launched ultra-low capacitance SCR, array TVS/ESD products, unidirectional 0603 size

2015

Launched Ultra Low Cap. TSPD product line with 6.8pf 2KV 10/700us surge

2014

Develop E-meter's PLC protection solutions, AHD, CVI, TVI Low Cap protection devices

2013

Established Weipan Micro Shenzhen office and launched CSP bare chip ESD protector

2012

Launched the first USB3.0 ESD protection chip, the first in China

2011

Introduce the WPM brand to the market and obtain ISO9001 quality management system certification

2010

Establish the Protection Circuit Marketing Department

2009

Mass-produced power TVS, power transistors, and various models of TSPD products, design and development of miniaturized TVS products for ESD

2008

Establish a four-inch wafer factory in Changshu to produce power TVS, power transistors, and TSPD products

2007

The company was established, and it cooperated with Changjiang Technology and Jiangsu Guyi

Business Philosophy

Weipan adheres to the principle of "creating value for customers with reliable products, leading technology, and excellent service". Guided by market demand and supported by technological innovation, we emphasize both quality and service. We are committed to providing products that are technologically advanced, stable in performance, and diverse in variety. While fully meeting customer needs, we also offer leading differentiated services. Together with our customers and partners, we contribute to the sustainable development of China's integrated circuit industry and the globalization of Chinese integrated circuit enterprises.

We believe that comprehensive and thoughtful service is a crucial way to earn the trust and support of our customers and partners.

We anticipate that Weipan's premium products and comprehensive services will deliver exceptional solutions for users and generate value for customers. Our commitment to our employees is to "grow together with the company" and to "aspire for the development of China's integrated circuit industry." We warmly welcome every outstanding individual who is passionate about the ascension of the integrated circuit industry and personal career growth to join us, and let's grow and realize our dreams together.

Quality and Green Policy

Weipan is committed to collaborating with our customers to provide products that meet the environmental substance control requirements of the industry. 


The company constantly monitors potential environmental risks that may arise during the production process, promotes environmental protection awareness among its employees, and strives to achieve green manufacturing, energy conservation, and emission reduction. The company conducts regular testing and verification of key environmental monitoring projects and product compliance each year, ensuring harmlessness throughout the entire production process. Weipan believes that clear mountains, green waters, chirping birds, and fragrant flowers are the best assets to be left for future generations. This is not only our responsibility, but also our company's action!

Declaration of Conformity for Green Products