Development history of Jinko (JK) fuse brand

As a leading brand in the field of circuit protection, Jinko (JK)'s development process is a microcosm of China's electronic component industry from "manufacturing" to "creation". The following is a systematic review of the development history of Jinko brand:
Phase 1: Origin of Entrepreneurship and Technological Foundation (1990-2000)
In 1990, Jinko Electronics Co., Ltd. was established in Shenzhen, Guangdong, initially focusing on acting as an agent for imported fuses. Faced with the monopoly of Japanese and Korean brands in the domestic fuse market, the founder of Jinko proposed a "domestic substitution" strategy, focusing on independent research and development of micro fuses and temperature fuses. In 1995, Jinko launched its first self-designed glass tube fuse (JK-G series), which passed UL certification and broke the monopoly of foreign brands, entering the fields of home appliances and power adapters.
Phase 2: Technological Breakthrough and Industry Certification (2001-2010)
In 2001, Jinko established a research and development center focusing on the development of polymer PTC materials. In 2005, the first self-healing fuse (JK-PPTC series) in China was successfully developed, with a response time shortened to 0.1 seconds and a lifespan of 100000 times. It is widely used for battery protection in mobile phones and laptops. During the same period, Jinko products passed TUV and CSA certifications, becoming a core supplier for home appliance companies such as Gree and Midea.
Phase Three: Globalization Layout and Product Diversification (2011-2020)
In 2011, Jinko established a production base in Vietnam and began its layout in Southeast Asia. In 2015, the JK-AEC series of automotive grade fuses was launched and passed AEC-Q200 certification, entering the supply chains of BYD and CATL. In 2018, Jinko acquired German fuse manufacturer "FUSETECH", obtained its thin film technology patent, and launched high-precision surface mount fuses (JK-SMD series) with an accuracy of ± 1%, entering the fields of 5G communication and medical equipment.
Phase Four: New Energy and Intelligent Transformation (2021 present)
In 2021, Jinko released its "dual carbon strategy", focusing on the fields of new energy vehicles and photovoltaic energy storage. Launched 800V high-voltage platform fuse (JK-EV series), with a withstand voltage of up to 1000V and a 30% increase in current carrying capacity, suitable for Tesla, NIO and other vehicle models. In 2023, Jinko collaborated with Huawei to develop intelligent fuses (JK-AI series) that integrate temperature sensors and MCUs to achieve triple protection against overcurrent, overtemperature, and overvoltage, and are applied to power modules in data centers.
The Evolution Path of Core Technologies
Materials Science: From glass tubes to ceramic tubes, and then to polymer PTC materials, achieving fast response (μ s level) and low internal resistance.
Process innovation: Introducing laser resistance adjustment and lead-free processes to ensure product consistency (± 5%).
Structural optimization: Develop four terminal design, flat packaging, reduce parasitic inductance, and match high-speed circuit requirements.
Industry Status and Certification System
Standard formulation: Participate in drafting the national standard GB/T 9364 "Small Fuses" and promote industry standardization.
Certification coverage: UL, TUV, CSA, AEC-Q200 and other global certifications, with products entering markets in 120 countries.
Customer ecosystem: covering top enterprises such as consumer electronics (Huawei, Xiaomi), automotive electronics (BYD, CATL), industrial control (Siemens, ABB), etc.
Future strategic direction
In the field of new energy, we will develop specialized fuses for solid-state batteries, with a temperature resistance of up to 200 ℃ and support for fast charging technology.
IoT security: Develop embedded fuse modules, integrate communication interfaces, and achieve remote monitoring and self diagnosis.
Sustainable development: Promote recyclable packaging, lead-free processes, and practice ESG principles.
The development process of Jinko is a model for Chinese private electronics enterprises to go from "following" to "leading". From glass tube fuses to smart fuses, from home appliances to new energy vehicles, Jinko has built a global circuit protection empire with "technological innovation" as the spear and "reliable quality" as the shield. In the future, with the deepening of AI and new energy revolution, Jinko will continue to deepen its layout in the fields of materials science and intelligent perception, and move towards the goal of becoming a "global leader in circuit protection".