Littelfuse SPF Series - Manual (Page 3)

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POWR-GARD ® Fuse Datasheet
Rev:4-D-052413
3 of 4
SPF SerieS Solar FUSeS
amPerage
rating
oPening time (minUteS)
100% of amp
rating per Ul
113% of amp
rating per iec
135% of amp
rating per Ul
145% of amp
rating per iec
200% of amp
rating per Ul
1-30
Temperature
Stabilization
60 Min 60 Max 60 Max 4 Max
WaVe Parameter lead Free recommendation
PReHeAT: (Typical Industry Recommendation)
TeMPeRATuRe MInIMuM: 130˚ C
TeMPeRATuRe MAXIMuM: —
PRe-HeAT TIMe 75 Seconds Maximum
SOLDeR POT TeMPeRATuRe 280˚ C Maximum
SOLDeR DWeLL TIMe 270˚ C for 8 Seconds Maximum
COMPLeTe CYCLe TIMe 250 Seconds Maximum
Recommended Process Parameters Soldering Parameters
-60°C -40°C -20°C 0°C 20°C 40°C 60°C 80°C 100°C 120°C 140°C
-76°F -40°F -4°F 32°F 68°F 104°F 140°F 176°F 212°F 248°F 284°F
AMBIENT TEMPERATURE
60
40
20
0
PER
CENT
OF
UPR
ATIN
G
0
20
40
60
PER
CENT
OF DOW
NR
ATIN
G
Temperature Derating Curve (Temperature of Air Immediately Surrounding Fuse)
Electrical Specification – Agency Requirements