Description
• Fast Acting Surface Mount Fuse
• Solid matrix design encapsulated in a
• Copper Leads with a tin/lead finish
• Fuses marked with catalog symbol, ampere rating,
Agency Information
• UL Recognition Guide and File numbers:
• CSA Certification Record No: Class #1422-01,
Environmental Data
• Resistance to Solder Heat: MIL-STD-202F, Method B
• Vibration: MIL-STD-202F, Method 204 Test Condition A
Soldering Method
• Wave Immersion: 260°C, 10 sec max
• IR Reflow: 260°C, 30 sec max
Ordering
• Specify product code and packaging code
† NOTE: SFT 12.5A is UL recognized on AC Only.
1. Interrupting ratings were measured at 100% power factor on AC, and a time constant less than 1ms on DC.
2. Voltage drop was measured at 25°C ± 3°C ambient temperature at rated current with device mounted on a circuit trace.
3. I
4. Device designed to carry 100% of rated current for four hours minimum. An operating current of 80% or less of rated current is recommended, with further derating
Product
Code
SFT-63mA
SFT-125mA
SFT-250mA
SFT-375mA
SFT-500mA
SFT-750mA
SFT-1
SFT-1.5
SFT-2
SFT-2.5
SFT-3
SFT-3.5
SFT-4
SFT-5
SFT-7.0A
SFT-10.0A
SFT-12.5A
94V-O thermoplastic body
and voltage rating
JDYX2 & E19180 (0-10A, 12.5A AC only)
File #53787
required at elevated ambient temperatures.
2
t measured at 50 amp, 125 VAC, .95PF, random closing angle; 300 amps, 125 VDC, TC<1ms.
% of Amp Rating
100%
200%
250%
ELECTRICAL CHARACTERISTICS
AC (Max.)
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
60V
60V
48V
Voltage
Rated
DC (Max.)
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
90V
90V
60V†
60 Seconds Maximum
5 Seconds Maximum
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
AC
4 Hours Minimum
Opening Time
Interrupting
Rating
1
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
300A
DC
Electrical Characteristics
7.49 x 10
3.17 x 10
4.46 x 10
1.72 x 10
.0099
.0302
.0784
.1775
.3355
.4980
.8855
1.7264
1.64
3.79
15
AC
I
Pre-arcing
2
-5
-4
-4
-3
SMD TRON
T (A
2
sec)
5.1 x 10
2.18 x 10
3.8 x 10
2.27 x 10
.0069
.0204
.0651
.1390
.2419
.3812
.6785
1.2912
1.06
4.04
.518
Dimensional Data
Trace Geometry
DC
(7.47 mm) (± .006)
Detail A
.29" (± .015)
-6
-5
-5
-4
®
2.0 x 10
4.18 x 10
5.74 x 10
2.59 x 10
.0114
.0345
.0891
.2383
.4359
.6355
1.0740
2.3779
1.97
3.92
20
AC
Surface Mount Fuses
(4.32 mm) (± .006)
(3.00 mm) (± .10)
Typical Total Clearing
.05"
.118" (± .004)
.17" (± .015)
-4
-4
-4
-3
(1.27 mm)
I
2
T (A
2
sec)
6.29 x 10
2.67 x 10
4.63 x 10
2.77 x 10
.0076
.0246
.0811
.1574
.2664
.4696
.7829
1.3556
1.67
4.28
.573
DC
(2.29 mm) (± .006)
.09" (± .015)
3
.350"
.100"
000
-6
-5
-5
-4
SFT Series
.055
Typical Voltage
Drop
100% Rated
5"
Current
2
Volts at
.8
.75
.66
.525
.12
.20
.170
.145
.130
.155
.135
.125
.114
.130
.090
.060"
060"
.1 "
14"