SMDH160-2

Series:	PolySwitch®, SMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	16V
Current - Max:	70A
Current - Hold (Ih) (Max):	1.6A
Current - Trip (It):	3.2A
Time to Trip:	15s
Resistance - Initial (Ri) (Min):	50 mOhms
Resistance - Post Trip (R1) (Max):	150 mOhms
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	2-SMD
Size / Dimension:	0.343" L x 0.250" W (8.70mm x 6.36mm)
Height - Seated (Max):	--
Thickness (Max):	0.118" (3.00mm)
Lead Spacing:	--
Approvals:	CSA, TUV, UL

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PTC Resettable Fuses: SMDH160-2 Application Field and Working Principle

PTC resettable fuses are a type of electrical protection components which are used to provide overcurrent protection. A PTC resettable fuse, also called a polymeric positive temperature coefficient (PPTC) fuse or polyfuse, is a self-resetting electronic device that is designed to protect electrical devices from short circuits and overloads.The SMDH160-2 is a PTC Resettable Fuse which provides overcurrent protection for a wide range of applications. The SMDH160-2 has a rated voltage of 160V AC/DC, a rated current of 2A, and a response time of less than 26ms. It provides both overcurrent and short-circuit protection, as well as protection against excess temperature in the device. The SMDH160-2 is typically used in power supplies, high performance lighting, home appliances, automotive systems, and other systems where overcurrent protection is required. It is particularly well-suited for use in applications where standard fuses are not suitable due to their slow response times or limited current ratings. The working principle of the SMDH160-2 is that when an overcurrent is detected, a conductive polymer in the device is heated, which causes its electrical resistance to increase sharply. This effectively breaks the circuit, which stops the current flow and prevents any further damage. When the device cools down and the current drops to a safe level, the polymer returns to its original state and the device resumes normal operation. The SMDH160-2 is designed to be highly reliable and to provide total protection against over currents. It has an isolation resistance of more than 1000MΩ, and a dielectric strength of 2000Vac. Its anti-surge ability is also excellent, demonstrating a capability to withstand high surge currents up to 8.5 times the rated current. The SMDH160-2 also has a wide operating temperature range of -20°C to +105°C, making it suitable for use in a variety of environments. Overall, the SMDH160-2 is an excellent choice for providing overcurrent protection in a wide range of applications. Its fast response time and reliable performance make it an ideal choice for protecting valuable equipment from the dangers of electrical overloads and short circuits.

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