Fast-Acting Subminiature Fuses
6125FF Series
Description
• Fast-acting surface mount fuse
• Overcurrent protection of systems up to 125Vac/72Vdc
• High inrush withstand capability
• Solder immersion compatible
Electrical Characteristics
% of Amp Rating
Opening Time
100%
4 Hours Minimum
200%
5 Second Maximum
Surface Mount Device
Agency Information
•
Recognition File: E19180
Environmental Data
•
•
•
•
•
•
•
Operating temperature: -55°C to 125°C
Mechanical shock: MIL-STD-202, Method 213
High frequency vibration: MIL-STD-202, Method 204
Load humidity: MIL-STD-202, Method 103
Moisture resistance: MIL-STD-202, Method 106
Resistance to solvents: MIL-STD-202, Method 215
Thermal shock: MIL-STD-202, Method 107
Dimensions - mm (in)
Ordering
• Specify packaging and product code
(i.e., TR2/6125FF500-R)
Soldering Method
• Wave immersion: 260°C, 10 Sec. max.
• Solder reflow: 260°C, 30 Sec. max.
Recommended Pad Layout - mm (in)
2.6
(0.102)
3.0
(0.118)
4.0
(0.157)
8.6
(0.338)
Specifications
Part
Number
6125FF500-R
6125FF750-R
6125FF1-R
6125FF1.25-R
6125FF1.5-R
6125FF2-R
6125FF2.5-R
6125FF3-R
6125FF3.5-R
6125FF4-R
6125FF5-R
6125FF6.3-R
6125FF7-R
6125FF8-R
6125FF10-R
6125FF12-R
6125FF15-R
*
Current
Rating
(amps)
500mA
750mA
1
1.25
1.5
2
2.5
3
3.5
4
5
6.3
7
8
10
12
15
Voltage
Rating
Vac
Vdc
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
125
72
Interrupting
Rating (amps)
125Vac
72Vdc
32Vdc
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
50
50
300
DC Cold
Resistance
Ω
(mΩ) Typ.
750
350
260
171
112
49
45
35
27
26
17
14
11
8.7
7.3
5.3
4.2
Melting
I
2
t
(A
2
sec)
0.08
0.152
0.22
0.355
0.456
1.67
5.20
6.24
7.28
7.4
9.5
15.1
37.25
70
67.75
210.59
296.10
Typical
Voltage
Drop (mV)
605
433
415
410
365
160
155
153
150
145
141
135
112
110
110
106
104
AC Interrupting Rating (Measured at designated voltage, 100% power factor); DC Interrupting Rating (Measured at designated voltage, time constant of less than 50
microseconds, battery source)
** Typical Melting I
2
t (Measured at 72Vdc, 10X rated current (not exceed 50A - IR @ 72Vdc)
1009
BU-SB09935
Page 1 of 2
Data Sheet 4326
Time-Current Curve
CURRENT IN AMPS
CURRENT IN AMPS
Packaging Code
Packaging Code Prefix
TR2
Description
5,000 fuses on tape-and-reel on a 13 inch (330mm) reel
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is
intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change
design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information contained
in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Bussmann 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.
© 2009 Cooper Bussmann
St. Louis, MO 63178
www.cooperbussmann.com
1009
BU-SB09935
Page 2 of 2
Data Sheet 4326
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