Yung Hsien Chang is a prominent inventor based in Douliu, Taiwan. He has made significant contributions to the field of over-current protection devices, holding a total of seven patents. His innovative designs focus on enhancing the safety and efficiency of electrical components.

Latest Patents

One of his latest inventions is the radial-leaded over-current protection device. This device comprises a PTC element, a first electrode lead, a second electrode lead, and an electrically insulating encapsulation layer. The PTC element consists of a first conductive layer, a second conductive layer, and a PTC material layer laminated in between. The PTC material layer includes crystalline polymer and conductive filler dispersed within it. The first electrode lead connects to the first conductive layer, while the second electrode lead connects to the second conductive layer. The encapsulation layer, made of a fluorine-containing polymer, wraps around the entire outer surface of the PTC element and the ends of the electrodes. This device has an initial resistance ranging from 0.0017 to 0.0027 ohms.

Another notable invention is the surface-mountable over-current protection device. This device features at least one PTC material layer, a first conductive layer, a second conductive layer, a first electrode, a second electrode, an insulating layer, and a cover layer. The PTC material layer also comprises crystalline polymer and conductive fillers. The first and second conductive layers are positioned on opposite surfaces of the PTC material layer. The insulating layer is placed between the electrodes to ensure insulation, while the cover layer, made of a fluorine-containing polymer, encases the entire device.

Career Highlights

Yung Hsien Chang is currently employed at Polytronics Technology Corporation, where he continues to develop innovative solutions in the field of electrical safety. His work has significantly impacted the industry, providing safer alternatives for over-current protection.

Collaborations

He collaborates with talented coworkers, including Yao Te Chang and Hsiu Che Yen, who contribute to the advancement of their projects and innovations.

Conclusion

Yung Hsien Chang is a dedicated inventor whose work in over-current protection devices showcases his commitment to innovation and safety in electrical engineering. His contributions continue to influence the industry positively.

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