SMD1812P020TSA

Current - Hold (Ih) (Max):	200mA
Current - Trip (It):	400mA
Time to Trip:	20ms
Resistance - Initial (Ri) (Min):	800 mOhms
Resistance - Post Trip (R1) (Max):	5 Ohms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric), Concave
Size / Dimension:	0.179" L x 0.128" W (4.55mm x 3.24mm)
Height - Seated (Max):	--
Thickness (Max):	0.031" (0.78mm)
Lead Spacing:	--
Approvals:	cURus, TUV
Series:	POLY-FUSE®, SMD1812
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	30V
Current - Max:	10A

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PTC Resettable Fuses, also known as “smart fuses”, are becoming increasingly popular in a wide range of applications due to their increased reliability, safety, and cost-effectiveness. The SMD1812P020TSA, in particular, is a compact, two-pole, fast-acting surface-mount High Temperature Fuse that’s suitable for portable electronic applications that possess high currents, such as cell phones, laptops, and gaming consoles. While the SMD1812P020TSA can provide sufficient power protection in these applications, it can also protect circuits from transient overvoltage events, making it an ideal choice for preventing loss of data or system damage.The primary function of any type of PTC Resettable Fuse is to protect against overcurrent events. The SMD1812P020TSA works by using a small ceramic disc that has two metallic layers on either side. When this ceramic disc is exposed to a current that is greater than its rated current, the ceramic material will become slightly warmer and expand, resulting in an increase in the electrical resistance across the metallic layers. This results in a reduction in current through the fuse and a corresponding rise in temperature, ultimately leading to the fuse being tripped.The rated current for the SMD1812P020TSA is 20 Amps, with a hold current of 10 Amps (at 50 Degrees Celsius) and a trips current of 25 Amps (at 70 Degrees Celsius). The main advantages of the SMD1812P020TSA are its fast response time (less than or equal to 150 µsec) and its ability to reset itself without replacing the fuse. Since PTC Resettable Fuses have more resilience and flexibility than traditional fuses, they prevent circuit damage by enduring short-term overloads and are well-suited for use in harsh and hostile environments.The SMD1812P020TSA has many applications in consumer electronics, automotive, and industrial systems. In consumer electronics, it is used as a reliable power protection device, preventing downstream components from suffering any damage due to an overcurrent or transient. In automotive systems, the SMD1812P020TSA can provide protection for fuel pumps and other systems that are sensitive to high and low voltage, as well as protection for the entire electrical system from short circuit failures or inrush current events. In industrial applications, the SMD1812P020TSA can provide maximum protection against overload current events when used in heavy-duty power tools and other machines that are exposed to fluctuations in voltage.Overall, the SMD1812P020TSA provides a reliable and cost-effective solution for circuit protection in a wide variety of applications. Its fast response time and ability to reset itself without needing to replace the fuse makes it an ideal choice for applications where circuit protection is of utmost importance. With its ability to withstand short-term overloads and protect against transient events, the SMD1812P020TSA should not be overlooked as an essential component for safe and reliable power protection.

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