0ZRC0250FF1A

Series:	0ZRC
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Polymeric
Voltage - Max:	90V
Current - Max:	40A
Current - Hold (Ih) (Max):	2.5A
Current - Trip (It):	5A
Time to Trip:	15.6s
Resistance - Initial (Ri) (Min):	50 mOhms
Resistance - Post Trip (R1) (Max):	130 mOhms
Operating Temperature:	-40°C ~ 85°C
Ratings:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Disc
Size / Dimension:	0.839" L x 0.122" W (21.30mm x 3.10mm)
Height - Seated (Max):	1.039" (26.40mm)
Thickness (Max):	--
Lead Spacing:	0.402" (10.20mm)
Approvals:	cURus, TUV

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Introduction to PTC Resettable Fuses

PTC stands for Positive Temperature Coefficient. PTC Resettable Fuses, also called polymeric positive temperature coefficient resettable fuses are current-limiting devices, protection components that prevent current overload and short circuits. These fuses help protect a circuit or a system from excessive current and overheating. They are widely used in telecommunications, computer, automation, metering, instrumentation, automotive, and other intensity current or small electronic circuits.

0ZRC0250FF1A Application Field and Working Principle

0ZRC0250FF1A is a miniature polymeric positive temperature coefficient (PPTC) resettable fuse, with a rated current of 250mA and rated voltage of 6VDC - 60VDC. It is ideal for use in applications where reliable overcurrent and overtemperature protection is required such as consumer products, computer peripherals, DC cord set, telecom, medical, metering, and industrial control. The basic working principle of 0ZRC0250FF1A is relatively simple. When the applied current rises over the limit, the internal PTC element starts to increase its temperature, which in turn increases its own electrical resistance. This increase in resistance will reduce the current to a safe level and maintain the circuit in a low-current state. When the current drops below the fuse’s user-defined holding current, the PTC element will dissipate most of its heat and reset itself.

Advantages of 0ZRC0250FF1A

PTC Resettable Fuses are an ideal replacement for traditional fuses. The advantages they offer over other fuses include:

• The device is resettable and can be reused after the fault has been cleared.
• The high-temperature construction and materials ensure maximum reliability and durability.
• The low response time of the device helps in keeping current surges and faults in check.
• They are compact and have a small footprint and light weight, making them ideal for use in space-constrained applications.
• 0ZRC0250FF1A is RoHS compliant and is suitable for use in harsh environments.

Factors to Consider When Choosing a Resettable Fuse

When selecting a resettable fuse for a certain application, it is important to take into account various parameters such as:

• The amount of current to be protected.
• The type of devices to be protected from current surges and overloading.
• The circuit environment, including ambient temperature, material type, size, weight, and other environmental characteristics.
• The response time of the fuse in order to respond to sudden current and power surges.
• The temperature rating of the fuse in order to ensure that it does not exceed its rated temperature.
• The fuse\'s peak and steady-state current capabilities.

Conclusion

PTC Resettable Fuses are a great choice for protecting circuits from current overload and short circuits. Amongst many advantages, these fuses are resettable and reusable, meaning that they can be used multiple times without having to be replaced. 0ZRC0250FF1A, a miniature PTC Resettable Fuse with a rated current of 250mA and rated voltage of 6VDC - 60VDC, has an internal PTC element that increases in resistance when the current exceeds a certain limit, and dissipates its heat to reset once the current drops below the user-defined holding current. It is ideal for applications such as consumer products, computer peripherals, DC cord sets, telecom, medical, metering, and industrial control. It is important to consider the various factors while selecting a resettable fuse to ensure it is suitable for the application.

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