Technical Data
4344
Effective
May
2017
Supersedes
June
2008
1025TD
Time-delay
surface mount fuse
Environmental data
•
Life test: MIL-STD-202, Method 108A, Test
•
•
•
•
•
•
•
•
•
Product features
•
Time-delay surface mount fuse
•
Satisfies the EIA/IS-722 Standard
•
Solder immersion compatible
Agency information
• UL Recognition Guide & File numbers: JDYX2 &
E19180 (250mA - 5A)
• CSA Component Acceptance: File # 053787 C000,
Class # 1422 30
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.,
TR2/1025TD250-R)
Soldering method
•
Wave immersion: 260°C, 10 Sec. max.
•
Infrared reflow: 260°C, 30 Sec. max.
Electrical Characteristics
% of Amp Rating
Opening Time
100%
4 Hours Minimum
200%
1 Second Minimum
200%
60 Seconds Maximum
250% *
10 Seconds Maximum
* If fuse does not open @ 200% in 60 seconds, raise current to 250%
and the fuse must open in 10 seconds maximum.
Product Code
1025TD250-R
1025TD500-R
1025TD750-R
1025TD1-R
1025TD1.5-R
1025TD2-R
1025TD2.5-R
1025TD3-R
1025TD3.5-R
1025TD4-R
1025TD5-R
Current
Rating
Amps
250mA
500mA
750mA
1
1.5
2
2.5
3
3.5
4
5
Voltage
Rating
AC
DC
250
125
250
125
250
125
250
125
250
125
250
125
250
125
250
125
250
125
250
125
250
125
Interrupting
Rating*
250Vac
125Vdc
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
50A
s
DC Cold
Resistance**
(Ω)
Typical
4.200
0.5500
0.317
0.2030
0.1025
0.0680
0.0420
0.0330
0.0270
0.0220
0.0160
Typical
Melting
I
2
t†
0.128
1.47
0.93
9.91
11.79
17.27
16.51
42.74
43.33
66.96
88.38
Typical
Voltage
Drop‡
1900 mV
455 mV
400 mV
387 mV
310 mV
250 mV
201 mV
184 mV
180 mV
152 mV
145 mV
* AC Interrupting Rating (Measured at designated voltage, 100% power factor random closing); DC Interrupting Rating (Measured at designated voltage, time
constant of the calibrated circuit is 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, time constant of calibrated circuit less than 50 microseconds
‡ 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.
Technical Data
4344
Effective
May
2017
1025TD
Time-delay
surface mount fuse
Time-Current Curve
Dimensions – mm (in)
Drawing Not to Scale
Recommended Pad Layout – mm (in)
3.30
(0.130)
4.38
(0.172)
6.79
(0.267)
Packaging Code Pre x
TR2
Description
2,500 fuses on 24mm tape-and-reel on 13 inch (330mm) reel per EIA Standard 481
Packaging Code
Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written
approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly
used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No.
4344
BU-SB08288
May
2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
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