SMD1812P075TSA/24

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PTC Resettable Fuses are an important component in current electronic products. SMD1812P075TSA/24 is one of the PTC Resettable Fuses used in modern products. In this article, we will introduce its application field and working principle.

Application Field

SMD1812P075TSA/24 is a Polymeric Positive Temperature Coefficient (PPTC) Resettable Fuse mainly used in consumer electronics and automotive applications. It can protect electronic systems such as consumer appliances, automotive electronic, telecommunication circuit, and PC peripheral from overcurrent. It takes a variety of case dimensions and voltage ratings, so it is suitable for any applications.

Working Principle

SMD1812P075TSA/24 works by concept of Temperature Dependent Resistance (TDR). It contains a special kind of polymer material with resistance increases with temperature. In normal working condition, the resistance will stay low to keep current flowing, while when the overload happens, the heat caused by the current will increase the resistance of the fuse and the current will be cut off. This is the Overload Protection Mode. After the overcurrent is removed, the temperature of the plastic material will decrease and the resistance of the fuse will decrease. This is the Resetting Mode.

This PTC Resettable Fuse also has advantages like low cost, low power dissipation, fast fuse action, and automatic reset, making it a great protection device for a wide range of applications. Additionally, its special construction also eliminates sparks and fire hazards.

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