Thinking Electronic
Thinking Electronic is a Taiwanese manufacturer of thermistors, varistors, sensors, suppressors, and resettable circuit-protection components.
Last updated August 31, 2026
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Overview
Thinking Electronic Industrial Co., Ltd., commonly branded as THINKING, is a Taiwanese manufacturer specializing in components that protect electronic circuits from excessive current, voltage, heat, and electrostatic discharge. The company was established in 1979 and is headquartered in Kaohsiung, Taiwan. Its product portfolio developed from an initial ceramic-material base into a broader range of ceramic, polymer, and metal protective components used by electronics manufacturers and power-supply producers. The company is particularly associated with negative-temperature-coefficient thermistors, or NTC thermistors, and varistors. NTC thermistors can be used as inrush-current limiters: when equipment is switched on, they help reduce the temporary surge of current drawn by a power supply. Varistors provide protection against transient overvoltage and surge events that can occur in electrical networks. These applications gave Thinking Electronic a role in the supply chain supporting Taiwan's electronics and switched-mode power-supply industries, especially during the expansion of Taiwan's personal-computer sector in the 1980s. Thinking Electronic's broader offering includes positive-temperature-coefficient thermistors, temperature-sensor probes, electrostatic-discharge suppressors, and polymer resettable fuses, also known as PPTC devices. Together, these products address several common circuit-protection requirements, including overcurrent protection, surge protection, thermal sensing, and protection from electrostatic events. The company began manufacturing in Kaohsiung and later established additional production facilities in China, including sites in Guangdong, Jiangsu, Hubei, and Jiangxi. The business is a component manufacturer rather than a consumer-facing electronics brand. Its products are generally embedded in other companies' equipment and systems, including power supplies and electronic devices. Thinking Electronic has been described as a major Taiwanese circuit-protection-component manufacturer and as one of Taiwan's notable producers of NTC thermistors and varistors. It was also identified as the first publicly listed company in Taiwan's protective-component industry. A 2007 ranking by CommonWealth Magazine placed the company among Taiwan's top 1,000 manufacturers, reflecting its position within the country's industrial electronics base. Its present identity is therefore centered on specialized electronic protection and sensing components rather than finished consumer products. The available reference material does not provide sufficient information to document current revenue, employee numbers, detailed ownership, management, or a corporate website URL.
History
Thinking Electronic Industrial Co., Ltd. was established in 1979 in Taiwan and built its business around materials and components used to protect electronic circuits. Its early development was associated with ceramic materials, after which the company expanded into polymer and metal technologies. This materials progression enabled it to offer a wider set of protective and sensing products rather than relying on a single component category. The growth of Taiwan's personal-computer and electronics industries during the 1980s created demand for reliable passive components used in power supplies and other electronic assemblies. Thinking Electronic's NTC thermistors were used as inrush-current limiters in switched-mode power supplies, where they help moderate the current surge that occurs when equipment is powered on. Its varistors served a complementary protective function by helping shield circuits from transient voltage surges. These applications connected the company to the expanding Taiwanese electronics manufacturing ecosystem and helped establish its reputation in NTC thermistors and varistors. Over time, the company extended its portfolio to include PTC thermistors, temperature-sensor probes, electrostatic-discharge suppressors, and polymer resettable fuses. The resulting range covered several forms of circuit protection and temperature-related monitoring, including overcurrent, overvoltage, overheating, and electrostatic-discharge protection. This product expansion positioned Thinking Electronic as a specialist component supplier rather than a maker of finished consumer electronics. Manufacturing operations were established in Kaohsiung and later expanded into mainland China, with production facilities identified in Guangdong, Jiangsu, Hubei, and Jiangxi. The geographic expansion supported the company's participation in the broader Asian electronics manufacturing supply chain. Thinking Electronic became publicly listed on the Taiwan Stock Exchange under ticker 2428 and has been described as the first publicly listed company in Taiwan's protective-component industry. Its standing in Taiwan's industrial economy was also reflected in its inclusion in a 2007 CommonWealth Magazine survey of the country's top 1,000 manufacturers. The available material does not provide a detailed account of subsequent corporate reorganizations, acquisitions, executive changes, financial performance, or current strategic initiatives. Accordingly, the documented history is strongest on the company's founding, product evolution, manufacturing footprint, and role in Taiwan's electronics-component sector.
- 2007
Included among Taiwan's top manufacturers
[1]Thinking Electronic was included in CommonWealth Magazine's survey of Taiwan's top 1,000 manufacturers.
- 1980
Expansion alongside Taiwan's personal-computer industry
[1]As Taiwan's personal-computer sector expanded, the company's NTC thermistors and varistors found applications in switched-mode power supplies and related circuit-protection systems.
- 1979
Company established
[1]Thinking Electronic Industrial Co., Ltd. was established in Taiwan, with headquarters in Kaohsiung.
Products and positioning
A Taiwanese industrial electronics manufacturer focused on circuit-protection, thermal-sensing, and related passive components for electronic equipment and power-supply supply chains.
Thermistors
NTC thermistors
Negative-temperature-coefficient thermistors are temperature-sensitive resistive components whose resistance decreases as temperature rises. In Thinking Electronic's applications, they are associated particularly with inrush-current limiting in switched-mode power supplies, helping reduce the initial current surge when equipment is energized.
Thermistors
PTC thermistors
Positive-temperature-coefficient thermistors are resistive components whose resistance increases with temperature. They can support protective and sensing functions in electronic circuits, including responses to abnormal current or thermal conditions.
Temperature sensing
Temperature sensor probes
Temperature sensor probes extend the company's thermal-component offering into packaged sensing assemblies. They are intended for detecting and monitoring temperature in electronic equipment and other systems where thermal conditions must be measured or controlled.
Overvoltage protection
Varistors
Varistors are voltage-dependent resistive components used to help protect circuits from transient overvoltage and surge events. Thinking Electronic's varistors are associated with protection against occasional surge currents in electricity networks and are part of the company's core circuit-protection portfolio.
Electrostatic-discharge protection
ESD suppressors
Electrostatic-discharge suppressors are protective components designed to divert or limit damaging voltage events caused by electrostatic discharge. They broaden Thinking Electronic's offering beyond power-supply surge protection into protection for sensitive electronic interfaces and circuits.
Overcurrent protection
Polymer resettable fuses
Polymer positive-temperature-coefficient resettable fuses, commonly called PPTC devices, provide recoverable protection against excessive current. After an overcurrent event and subsequent cooling, the component can return toward its normal operating state, reducing the need for a conventional one-time fuse replacement.
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