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SC30-250SW0D 2.5A PPTC Resettable Fuse Maximum Voltage 30Vdc Meets UL94V-0 Requirements
DATASHEET: SC30-250SW0D_v96.2.pdf
Electrical Parameters:
| Part Number | I hold (A) | I trip (A) | V max (Vdc) | I max (A) | Pdtyp (W) | Maximum Time To Trip | Resistance | |||
| Current (A) | Time (S) | R min (Ω) | R max (Ω) | R1max (Ω) | ||||||
| SC16-600SZ0D | 6.00 | 12.00 | 16 | 40 | 2.80 | 30.0 | 5.8 | 0.010 | 0.020 | 0.035 |
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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):
| Ambient Operation Temperature | -40℃ | -20℃ | 0℃ | 23℃ | 30℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ |
| Percentage Reduction | 145% | 130% | 120% | 100% | 95% | 88% | 80% | 71% | 66% | 56% |
Test Procedures and Requirement:
| Test | Test Conditions | Accept/Reject Criteria |
| Resistance | In still air @25±2°C | Rmin≤R≤Rmax |
| Hold Current | 60 min, at Ihold, In still air @25±2°C | No trip |
| Time to Trip | Specified current, Vmax, @25±2°C | T≤Maximum Time To Trip |
| Trip Cycle Life | Vmax, Imax,100 cycles | No arcing or burning |
| Trip Endurance | Vmax,24hours | No arcing or burning |
Physical Specifications:
| Lead Material | 0.03-1.85A Tin-plated Copper clad steel 2.50-5.00A Tin-plated Copper |
| Soldering Characteristics | Solder ability per MIL-STD-202, Method 208E |
| Insulating Material | Cured, flame retardant epoxy polymer meets UL 94V-0 requirements. |
| Device Labeling | Marked with ‘SC’, voltage, current rating |
Packaging Quantity:
| Part Number | Quantity (pcs/reel) |
| SC30-250SW0D | 1000 |
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.