PTGL7SAS1R8K2B51A0

Resistance - 25°C (Typ):	1.8 Ohms
Approvals:	--
Lead Spacing:	0.197" (5.00mm)
Thickness (Max):	--
Height - Seated (Max):	0.484" (12.30mm)
Size / Dimension:	0.287" Dia x 0.138" T (7.30mm x 3.50mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-30°C ~ 125°C
Series:	POSISTOR®, PTGL
Current - Trip (It):	708mA
Current - Hold (Ih) (Max):	532mA
Current - Max:	5A
Voltage - Max:	30V
Type:	Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	--

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Introduction

PTC Resettable Fuses, also known as Polymeric Positive Temperature Coefficient (PPTC) Fuses or Positive Temperature Coefficient Fuses, are electronic devices that provide short-circuit protection and thermal protection. They are very popular in devices and applications requiring circuit protection. The PTGL7SAS1R8K2B51A0 is a typical PTC Resettable Fuse.

Application Field and Working Principle

The PTGL7SAS1R8K2B51A0 is a 1R8K2B51A0 series PTC resettable fuse, designed to provide protection against short circuits and excessive current surges. The series features low cost, low power dissipation, and high temperature rating, making them an ideal choice for a range of markets and applications.The PTGL7SAS1R8K2B51A0 consists of a PTC device, a fuse element, and a lead assembly. The fuse element, which has a low resistance, is typically a metal wire with a plated or coated surface, such as a copper alloy, a copper/nickel alloy, or gold. The lead assembly consists of two types of insulated metal wires: one is the output wire and the other is the input wire.When the PTC device is under normal operating conditions, the PTC device is in a low resistance state, allowing current to pass through it. However, when an overcurrent occurs, the resistance of the PTC device increases, causing the device to shut off power and protect the equipment and circuit from overcurrent damage.The PTC device also functions as a thermal protector. If the temperature in the device exceeds the rated temperature, the resistance of the PTC device increases, causing the device to shut off power and protect the equipment and circuit from thermal damage.The PTGL7SAS1R8K2B51A0 is an ideal choice for a variety of applications and markets, including automotive, medical, power tools, instrumentation, industrial electronics, and consumer electronics. It can be used to protect circuits and prevent damage caused by surges, short circuits, and excessive heat.

Conclusion

The PTGL7SAS1R8K2B51A0 is a type of PTC resettable fuse that provides protection against overcurrents and excessive heat. It is an ideal solution for a variety of applications, and its features make it a cost-effective and reliable option for circuit protection.

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