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.
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