SC30-250SW0D 2.5A PPTC Resettable Fuse Maximum Voltage 30Vdc Meets UL94V-0 Requirements

DATASHEET: SC30-250SW0D_v96.2.pdf

Electrical Parameters:

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Product features of resettable fuses:

The most obvious difference between polymer resettable fuses and ordinary fuses is their resettable characteristics. Although both can provide overcurrent protection, a polymer resettable fuse can provide overcurrent protection many times while a regular fuse must be replaced once it blows for the circuit to function properly. In an overheated and overhumid environment, some characteristics of polymer resettable fuses may be damaged; under normal storage conditions, the life of polymer resettable fuses can be considered unlimited.

Selection of resettable fuse:

When selecting PPTC, the following principles should generally be followed, and the appropriate model should be selected based on the maximum operating voltage V of the line, the normal operating current I, the fault current IF and the maximum ambient temperature TMAX. At the maximum operating ambient temperature TMAX, the following should be met:

1. Selection of sustaining current IH: sustaining current IH is slightly larger than operating current I;

2. Selection of fault current IF: fault current IF should be greater than trigger current IT and less than maximum current I max;

3. Maximum voltage V max: The maximum voltage V max is greater than the line operating voltage. When selecting PPTC, the operating temperature must be considered and derated.

Temperature Rerating Chart – I _hold (A):

Test Procedures and Requirement:

Physical Specifications:

Packaging Quantity:

Application

Digital products, Cameras, Mobile phones, Photo frames, Control panels, Toys, LCDs, Power supplies,

Communication equipment, Security products, Audio, Converters. It is used in almost all low-voltage power supply products, and lightning protection packages, etc.