Description
• Fast-acting surface-mount fuse
• Satisfies the EIA/IS-722 Standard
• Solder immersion compatible
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
• 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
• Resistance to dissolution of metallization:
ANSI J-STD-002, Test D
• Mechanical shock: MIL-STD-202, Method 213B with
exceptions per EIA/IS-722 Standard
• High frequency vibration: MIL-STD-202, Method 204D,
Test Condition D
• Resistance to solvents: MIL-STD-202, Method 215A
Ordering
• Specify packaging and product code
(i.e., TR2/1025FA250-R)
Soldering Method
• Wave solder: 260°C, 10 Sec max.
• Infrared reflow: 260°C, 30 Sec max.
Recomended Pad Layout – mm (in)
Dimensions – mm/in
Drawing Not to Scale
Electrical Characteristics
% of Amp Rating Opening Time
100% 4 Hours Minimum
200% (250mA-5A) 5 Seconds Maximum
250% (250mA-5A fuse) 1 Second Maximum
200% (7-15A fuse) 20 Seconds Maximum
250% (7-15A fuse) 4 Seconds Maximum
Specifications
Current Voltage Interrupting DC Cold Typical Typical
Product Code Rating Rating Rating (amps)* Resistance** (Ω) Melting Voltage
(amps) AC DC 250Vac 125Vdc 60Vdc Typical I
2
t† Drop‡
1025FA250-R 250mA 250V 125V 50 50 - 4.7500 0.1212 2019mV
1025FA500-R 500mA 250V 125V 50 50 - 1.1500 0.0415 1500mV
1025FA750-R 750mA 250V 125V 50 50 - 0.5550 0.143 880mV
1025FA1-R 1 250V 125V 50 50 - 0.2800 1.750 560mV
1025FA1.5-R 1.5 250V 125V 50 50 - 0.1140 1.460 260mV
1025FA2-R 2 250V 125V 50 50 - 0.0750 6.086 258mV
1025FA2.5-R 2.5 250V 125V 50 50 - 0.0510 8.48 232mV
1025FA3-R 3 250V 125V 50 50 - 0.0384 18.15 205mV
1025FA3.5-R 3.5 250V 125V 50 50 - 0.0305 17.83 185mV
1025FA4-R 4 250V 125V 50 50 - 0.0275 23.32 190mV
1025FA5-R 5 250V 125V 50 50 - 0.0195 38.74 180mV
1025FA7-R 7 250V 60V 50 - 50 0.0116 138 150mV
1025FA10-R 10 250V 60V 50 - 50 0.0072 457 146mV
1025FA12-R 12 250V 60V 50 - 50 0.0056 498 120mV
1025FA15-R 15 250V 60V 50 - 50 0.0039 1451 110mV
* 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 I
2
t (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.
Brick™ Fuses
1025FA Series, Fast-Acting
0308 BU-SB08026 Page 1 of 2 Data Sheet 4322
