SMD2920P300TF/15A

Series:	POLY-FUSE®, SMD2920
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	15V
Current - Max:	40A
Current - Hold (Ih) (Max):	3A
Current - Trip (It):	6A
Time to Trip:	20s
Resistance - Initial (Ri) (Min):	15 mOhms
Resistance - Post Trip (R1) (Max):	48 mOhms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	2920 (7351 Metric), Concave
Size / Dimension:	0.290" L x 0.202" W (7.36mm x 5.12mm)
Height - Seated (Max):	--
Thickness (Max):	0.039" (1.00mm)
Lead Spacing:	--
Approvals:	cURus, TUV

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PTC Resettable Fuses are an essential component of any safety system. They are used to protect electric circuits from damage, short circuiting and over current, and to reset after the protection has been activated. SMD2920P300TF/15A is one of these devices that is highly efficient and can be installed in any application, including industrial, commercial, residential, automotive and medical applications.The SMD2920P300TF/15A is a two-piece electronic fuse with three terminals that is ideal for providing short-circuit and over-current protection. It is designed to be solderable and compact, allowing it to fit on printed circuit boards without wasting valuable space. The two-piece construction provides the flexibility and reliability required by circuitry and all related components.The SMD2920P300TF/15A is a thermal device that trips when there is over-current flow exceeding the fuse’s rating. Its two-piece construction consists of a short-circuit block, located in between the two terminals, and a thermal sensing unit, attached to the center terminal.The short circuit block is made from a resistance element and a metal foil. When the predetermined current passes through the resistance element, the heat created by the high current flow is absorbed by the metal foil. As the temperature rises, the resistance increases, which then trips the fuse. When the heat is no longer present, the resistance returns to its nominal state, and the fuse is reset.The thermal sensing unit is a sensitive circuit that contains a bimetallic element that responds to temperature changes. This sensitive circuit is used to detect an elevated temperature within the fuse, allowing the PTC to effectively disconnect the affected circuit. When the temperature is higher than the rated operating temperature, the bimetallic element expands, tripping on its own current rating. When the temperature returns to its nominal state, the bi-metallic element contracts, resetting the PTC.The SMD2920P300TF/15A is ideal for use in application fields that require short-circuit protection, such as power supplies, chargers, and medical instruments, as well as applications requiring over-current protection such as motors and lighting systems. It is also suitable for use in any application that requires thermal protection, such as automotive and computer-controlled systems.The thermal response and reset times of the SMD2920P300TF/15A are incredibly fast, offering better tolerance to transients and reducing the associated nuisance tripping. Furthermore, the reset mechanism is effective even after numerous cycles, making the device a reliable and cost-effective solution for numerous applications.The SMD2920P300TF/15A is designed to provide superior protection for electronic circuit and all related components, while avoiding unnecessary nuisance trips. In addition, its thermal characteristics make the SMD2920P300TF/15A the perfect choice for applications that require both short-circuit and over-current protection. Thus, its use is highly recommended in many different application fields.

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