1812L075PRT

Resistance - Initial (Ri) (Min):	100 mOhms
Approvals:	cURus, TUV
Lead Spacing:	--
Thickness (Max):	0.030" (0.75mm)
Height - Seated (Max):	--
Size / Dimension:	0.179" L x 0.128" W (4.55mm x 3.24mm)
Package / Case:	1812 (4532 Metric), Concave
Mounting Type:	Surface Mount
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	450 mOhms
Series:	POLY-FUSE®, 1812L
Time to Trip:	200ms
Current - Trip (It):	1.5A
Current - Hold (Ih) (Max):	750mA
Current - Max:	100A
Voltage - Max:	13.2V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

PTC resettable fuses are electrical devices that utilize the Polymer Positive Temperature Coefficient (PPTC) of materials that are able to reduce current flow and interrupt circuits when the current rises above its rated value. The PPTC material used in these devices is a patented combination of polymers materials, which is very temperature sensitive. If an overcurrent passes through the device, it will heat up and shrink, eventually breaking the circuit. After the circuit is broken, the device will reset itself and begin to cool. Once the device has cooled down sufficiently, it will open and allow current to flow through the circuit again.The 1812L075PRT is a resettable fuse specifically designed to provide overcurrent protection in automotive applications. It has a current rating of 0.75A and is able to withstand a maximum operation temperature of 85°C (185°F). The device also features a high surge current capability, which allows for pulses up to 10A. Additionally, the device\'s fast response time and low profile design make it ideal for automotive applications.

How it Works

At normal operating condition, the 1812L075PRT resettable fuse works like a normal fuse and provides current to the automotive circuit. When a surge in current occurs, the device acts like a short circuit and the heat generated by the current causes the device to shut off. This breaks the circuit and stops the current from flowing.Once the device has been reset, it is then able to open up again and allow the flow of current. This is achieved by the device\'s patented polymer-based composition, which allows it to pass a tiny amount of current even after resetting. This low current prevents it from tripping again, thus preventing further overcurrents from occurring.

Advantages

The 1812L075PRT resettable fuse has a number of advantages over standard fuses. Firstly, it is much more reliable than a regular fuse, as it can trip multiple times without needing to be replaced. Secondly, it has a much faster response time and can reset much quicker than a standard fuse. This makes it ideal for automotive applications, as it can help prevent damage to the vehicle in the case of an overcurrent. Additionally, the device is small, lightweight, and has a low profile design. This makes it easy to integrate into automotive applications. Furthermore, the 1812L075PRT is relatively inexpensive, making it a cost-effective form of overcurrent protection.

Conclusion

The 1812L075PRT is a resettable fuse specifically designed to provide overcurrent protection for automotive applications. Its low profile and fast response time make it an ideal solution for automotive applications, while its low cost and high surge capability make it a cost-effective option. The device’s patented composition also allows it to open and close multiple times without needing to be replaced, making it much more reliable than a regular fuse.

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