Brick™ Fuses
1025FA Series, Fast-Acting
Description
• Fast-acting surface-mount fuse
• Satisfies the EIA/IS-722 Standard
• Solder immersion compatible
Electrical Characteristics
% of Amp Rating
100%
200% (250mA-5A)
250% (250mA-5A fuse)
200% (7-15A fuse)
250% (7-15A fuse)
Opening Time
4 Hours Minimum
5 Seconds Maximum
1 Second Maximum
20 Seconds Maximum
4 Seconds Maximum
Dimensions – mm/in
Drawing Not to Scale
Note: 30vde constant current source required for 200%
overload tests on 250mA-1A.
Agency Information
• UL Recognition Guide & File numbers:
JDYX2 & E19180 (250mA - 15A)
• CSA Component Acceptance:
File # 053787 C000, Class # 1422 30
Environmental Data
Recomended Pad Layout – mm (in)
3.30
(0.130)
• Life test: MIL-STD-202, Method 108A, Test Condition D
• Load humidity: MIL-STD-202, Method 103B
• Moisture resistance: MIL-STD-202, Method 106E
• Terminal strength: MIL-STD-202, Method 211A
• Thermal shock: MIL-STD-202, Method 107D, air-to-air
• Case resistance: EIA/IS-722
4.38
(0.172)
6.79
(0.267)
Ordering
• Resistance to dissolution of metallization:
ANSI J-STD-002, Test D
• Specify packaging and product code
(i.e., TR2/1025FA250-R)
• Mechanical shock: MIL-STD-202, Method 213B with
exceptions per EIA/IS-722 Standard
Soldering Method
• High frequency vibration: MIL-STD-202, Method 204D,
Test Condition D
• Wave solder: 260°C, 10 Sec max.
• Infrared reflow: 260°C, 30 Sec max.
• Resistance to solvents: MIL-STD-202, Method 215A
Specifications
Current
Rating
(amps)
250mA
500mA
750mA
1
1.5
2
2.5
3
Voltage
Rating
Interrupting
Rating (amps)*
DC Cold
Resistance** (Ω)
Typical
4.7500
Typical
Melting
I2t†
0.1212
0.0415
0.143
1.750
1.460
6.086
8.48
18.15
17.83
23.32
38.74
138
Typical
Voltage
Drop‡
Product Code
AC
DC
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
125V
60V
250Vac 125Vdc 60Vdc
1025FA250-R
1025FA500-R
1025FA750-R
1025FA1-R
1025FA1.5-R
1025FA2-R
1025FA2.5-R
1025FA3-R
1025FA3.5-R
1025FA4-R
1025FA5-R
1025FA7-R
1025FA10-R
1025FA12-R
1025FA15-R
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
-
-
-
-
-
-
-
-
-
-
-
-
50
50
50
50
2019mV
1500mV
880mV
560mV
260mV
258mV
232mV
205mV
185mV
190mV
180mV
150mV
146mV
120mV
110mV
1.1500
0.5550
0.2800
0.1140
0.0750
0.0510
0.0384
0.0305
0.0275
0.0195
0.0116
0.0072
0.0056
0.0039
3.5
4
5
7
10
12
15
60V
60V
-
-
-
457
498
1451
60V
*
AC interrupting rating (measured at designated voltage, 100% power factor random closing); DC interrupting rating (measured at designated voltage, time constant of
less than 50 microseconds, battery source)
** DC cold resistance (measured at ≤10% of rated current)
†
Typical Melting I2t (measured with a battery bank at rated DC voltage, 10x-rated current, but not exceeding the interrupting rating. Time constant of calibrated circuit less
than 50 microseconds). Test current not to exceed interrupting rating of 50A.
‡
Typical voltage drop (measured at rated current after temperature stabilizes)
• Device designed to carry rated current for four hours minimum. An operating current of 80% or less of rated current is recommended, with further derating required at
elevated ambient temperatures.
0308 BU-SB08026
Page 1 of 2
Data Sheet 4322
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