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
4 Hours Minimum
5 Second Maximum
100%
200%
Surface Mount Device
Agency Information
Dimensions - mm (in)
•
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
Ordering
Recommended Pad Layout - mm (in)
• Specify packaging and product code
(i.e., TR2/6125FF500-R)
2.6
(0.102)
3.0
(0.118)
Soldering Method
4.0
(0.157)
• Wave immersion: 260°C, 10 Sec. max.
• Solder reflow: 260°C, 30 Sec. max.
8.6
(0.338)
Specifications
Part
Current
Voltage
Rating
Interrupting
DC Cold
Melting
Typical
Voltage
Drop (mV)
605
2
Number
Rating
Rating (amps)
Resistance
I t
2
(amps)
Vac
Vdc
72
72
72
72
72
72
72
72
72
72
72
72
72
72
72
72
72
125Vac
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
72Vdc
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
32Vdc
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
300
(m
Ω
) Typ.
(A sec)
6125FF500-R
6125FF750-R
6125FF1-R
500mA
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
750
350
260
171
112
49
0.08
0.152
0.22
750mA
1
1.25
1.5
2
2.5
3
3.5
4
433
415
410
365
160
155
153
150
145
141
135
112
110
110
106
104
6125FF1.25-R
6125FF1.5-R
6125FF2-R
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
6125FF2.5-R
6125FF3-R
45
35
27
26
17
14
11
8.7
7.3
5.3
4.2
6125FF3.5-R
6125FF4-R
6125FF5-R
5
6.3
7
6125FF6.3-R
6125FF7-R
6125FF8-R
8
6125FF10-R
6125FF12-R
6125FF15-R
10
12
15
*
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 I2t (Measured at 72Vdc, 10X rated current (not exceed 50A - IR @ 72Vdc)
1009 BU-SB09935
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Data Sheet 4326