MINIASMDC050F-2 Circuit Protection

Series:	PolySwitch®, miniASMD
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	24V
Current - Max:	100A
Current - Hold (Ih) (Max):	500mA
Current - Trip (It):	1A
Time to Trip:	150ms
Resistance - Initial (Ri) (Min):	150 mOhms
Resistance - Post Trip (R1) (Max):	1 Ohms
Operating Temperature:	-40°C ~ 85°C
Ratings:	AEC-Q200
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric), Concave
Size / Dimension:	0.179" L x 0.128" W (4.55mm x 3.24mm)
Height - Seated (Max):	--
Thickness (Max):	0.024" (0.62mm)
Lead Spacing:	--
Approvals:	--

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Introduction

PTC (positive temperature coefficient) resettable fuses are devices which can cut off current when overloaded. These devices are also known as self-resetting fuses, polyfuses, self-recovering fuses, or resettable thermal cutouts. The MINIASMDC050F-2 belongs to this category of devices and it is used in various applications. This article will discuss the application field and working principle of this particular PTC resettable fuse.

Applications

The MINIASMDC050F-2 is used in various applications, including power supplies, mobile phones, tablets, automated assembly machines, and more. It is a highly reliable, cost-effective, and low-power solution for protecting against overcurrent.The device can be used as an alternative to traditional circuit breakers in some applications. It is suitable for both AC and DC applications, and its small form factor makes it easy to integrate into smaller systems. Thanks to its fast recovery time, the device is ideal for applications where rapid restart or re-energizing of the system is necessary. The MINIASMDC050F-2 is also popular in automotive applications. Its low-power capabilities make it a great choice for preventing the drainage of battery power, while its compact size allows it to be integrated in smaller systems.

Working Principle

When a PTC resettable fuse such as the MINIASMDC050F-2 is overloaded, it begins to heat up. This causes the fuse’s resistive material to expand and thereby reduce the current flow. This reduced current flow helps to reduce the amount of kWh used and helps to prevent the device or system from being damaged by an overcurrent. When the device reaches a predetermined temperature, its resistance begins to increase. This increases the resistance on the circuit, and consequently reduces the current. As the device cools down, its resistance returns to normal and the current flow resumes. The MINIASMDC050F-2 can be reset manually or automatically depending on the application. For manual resetting, the user must manually press the reset button. For automatic resetting, the device can be programmed so that it resets automatically when the current passes a certain level or when the temperature drops below a predetermined level.

Conclusion

The MINIASMDC050F-2 is a highly reliable, cost-effective, and low-power solution for protecting against overcurrent. It is suitable for both AC and DC applications, and its small form factor makes it easy to integrate into smaller systems. The device is used in a variety of applications, including power supplies, mobile phones, tablets, automated assembly machines, and automotive applications. The device’s working principle is based on its progressive resistance increase as temperature rises, thus providing efficient overcurrent protection.

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