PTR030V0300-TR1

Resistance - Initial (Ri) (Min):	20 mOhms
Approvals:	cURus, TUV
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.858" (21.80mm)
Size / Dimension:	0.449" L x 0.118" W (11.40mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	80 mOhms
Series:	PolyTron™, PTR030V
Time to Trip:	10.8s
Current - Trip (It):	6A
Current - Hold (Ih) (Max):	3A
Current - Max:	40A
Voltage - Max:	30V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable FusesPTC (Positive Temperature Coefficient) Resettable Fuses are commonly known as Polyfuses. They are self-resetting overcurrent protection devices designed to protect circuits from damaging overcurrent conditions. They are made from a specially formulated polymeric material, which acts as a conductor when a current flows through it. The material has a positive temperature coefficient, which means that when there is an increase in the current flowing through the material, it begins to heat up and resists the flow of current. This causes the resistance of the material to increase, and the voltage across the fuse drops until it reaches the trip point and triggers the circuit’s protective mechanism.The PTR030V0300-TR1 is a PTC Resettable Fuse manufactured by YuJa Electronics. It is designed to protect circuits from overcurrent conditions up to 30V and 0.3A. It features a low trip current of 0.2A and a high trip current of 0.3A. The PTC Resettable Fuse also has a wide operating temperature range from -40°C to 125°C that provides higher reliability and is suitable for a variety of applications. It is UL listed and RoHS compliant and is suitable for lead-free soldering.The PTR030V0300-TR1 is mainly used in industrial, automotive, consumer electronics, power supplies, and communications applications. In industrial applications, it is mainly used for battery protection in mobile devices, heaters, ovens, furnaces, boilers, and other equipment. In consumer electronics applications, it is mainly used for protection against overloads and shorts in circuit boards and power supplies. In automotive applications, it is mainly used for power steering, side view mirrors, lighting, and other systems where protection against overloads and shorts is required. In power supplies and communications applications, it is mainly used for protecting routers and switches against overvoltage conditions.The working principle of a PTC Resettable Fuse is relatively simple. When a current flows through the specially formulated polymeric material, it begins to heat up and resists the flow of current, increasing the resistance of the material and dropping the voltage across the fuse until it reaches the trip point. This triggers the circuit’s protective mechanism and switches off the power to the circuit in order to protect it from damage. Once the power is switched off, the material cools down and the resistance drops back to its original level, allowing the circuit to function as normal.In conclusion, the PTR030V0300-TR1 is a PTC Resettable Fuse manufactured by YuJa Electronics that is designed to protect circuits from overcurrent conditions up to 30V and 0.3A. It is mainly used in industrial, automotive, consumer electronics, power supplies, and communications applications. The working principle of the PTC Resettable Fuse involves the material’s positive temperature coefficient, which heats up and resists the flow of current until the trip point is reached, triggering the circuit’s protective mechanism and switching off the power until the material is cooled down.

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