SMD150F-2018-2

Series:	PolySwitch®, SMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	15V
Current - Max:	40A
Current - Hold (Ih) (Max):	1.5A
Current - Trip (It):	3A
Time to Trip:	5s
Resistance - Initial (Ri) (Min):	60 mOhms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	2-SMD
Size / Dimension:	0.343" L x 0.250" W (8.70mm x 6.35mm)
Height - Seated (Max):	--
Thickness (Max):	0.118" (3.00mm)
Lead Spacing:	--
Approvals:	--

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Introduction

PTC Resettable Fuses are electronic devices used in a wide variety of applications for overcurrent protection. The SMD150F-2018-2 is a PTC Resettable Fuse from Sensi Technologies, a leader in integrated circuit protection solutions. This fuse offers load protection and easy resetting without the need for manual intervention. The SMD150F-2018-2 has a variety of applications and working principles.

Application Field

The SMD150F-2018-2 has many potential application fields, including overcurrent protection in DC-DC converters, cell and battery protection circuits, industrial automation, automotive electronics, medical equipment, consumer electronics, and general electronic systems. The SMD150F-2018-2 can be used to protect high power circuits, as it has an interrupt capacity of up to 64A. It is also very reliable and has excellent quality control. For these reasons, the SMD150F-2018-2 is well suited for high-reliability applications, such as those in aerospace and medical applications.The SMD150F-2018-2 is also suitable for low power circuits, as its maximum working current is 1.25A. It can be used in low voltage power circuits that require over-current protection, such as mobile phone chargers, USB cables, and LED light systems.

Working Principle

The SMD150F-2018-2 is a PTC (Positive Temperature Coefficient) Resettable Fuse. This fuse works by employing a thermally sensitive material, such as polymeric material, which has a negative temperature coefficient. This material acts as a conductor that increases its resistance in response to increased current. When a current passes through the device above a certain threshold, the temperature of the material rises, and its resistance subsequently increases. This increase in resistance causes the voltage across the circuit to drop, thus limiting the current to a safe level. This process occurs very quickly, usually in a few milliseconds, and provides effective overcurrent protection. Once the current is reduced, the material cools down and its resistance is reduced. The voltage across the circuit returns to normal, and the fuse is reset. The SMD150F-2018-2 has many features that make it highly suitable for a variety of applications. The device fits standard through-hole and SMT footprints, making it easy to integrate with existing designs. Additionally, the SMD150F-2018-2 is RoHS compliant and UL recognized.

Conclusion

The SMD150F-2018-2 is an excellent choice for overcurrent protection applications, as it offers reliable protection and easy resetting. Its wide range of applications and small form factor make it an ideal solution for many circuit protection needs. The SMD150F-2018-2 is also RoHS compliant and UL recognized, so it can be used in a wide variety of applications.

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