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Accu-Guard ? II
SMD Thin-Film Fuse
Accu-Guard ? II is a version of Accu-Guard ? fuses for a
wider range of current and voltage ratings. Constructed on
alumina substrates, Accu-Guard ? II fuses display superior
electrical, mechanical and environmental properties.
Accu-Guard ? II dimensions are standard 0402, 0603,
0805, 1206 and 0612 chip sizes, see page 2.
ELECTRICAL SPECIFICATIONS
Operating temperature: -55°C to +125°C
Current carrying capacity:
For F0402E and F0603E at -55°C 107% of rating, at -25°C
100% of rating, at +125°C 80% of rating. For F0603C at
-55°C is 107% of rating, at +25°C 100% of rating, at +85°C
90% of rating, at +125°C 75% of rating.
For F1206B and F0805B at -55°C is 107% of rating, at
+25°C 100% of rating, at +85°C 93% of rating, at +125°C
90% of rating. For F0805B 2.50A and 3.00A at +85°C 90%
of rating, at +125°C 90% of rating.
Interrupting rating: 50A.
Insulation resistance: >20MΩ guaranteed (after fusing at
rated voltage).
For F0612D at -55°C 107% of rating, at +25°C 100% of
rating, at +85°C 80% of rating, at +125°C 75% of rating.
Current Resistance
Voltage Drop
Fusing Current
Pre-Arc
Rated
Type
F0402E
F0603E
F0603C
F0805B
F1206B
F0612D
Part Number
F0402E0R25FSTR
F0402E0R50FSTR
F0402E0R75FSTR
F0402E1R00FSTR
F0402E1R50FSTR
F0402E2R00FSTR
F0603E0R25FSTR
F0603E0R37FSTR
F0603E0R50FSTR
F0603E0R75FSTR
F0603E1R00FSTR
F0603E1R25FSTR
F0603E1R50FSTR
F0603E1R75FSTR
F0603E2R00FSTR
F0603E2R50FSTR
F0603E3R00FSTR
F0603C0R25FWTR
F0603C0R37FWTR
F0603C0R50FWTR
F0603C0R75FWTR
F0603C1R00FWTR
F0603C1R25FWTR
F0603C1R50FWTR
F0603C1R75FWTR
F0603C2R00FWTR
F0603C2R50FWTR
F0603C3R00FWTR
F0805B0R25FW/STR
F0805B0R50FW/STR
F0805B0R75FW/STR
F0805B1R00FW/STR
F0805B1R25FW/STR
F0805B1R50FW/STR
F0805B2R00FW/STR
F0805B2R50FW/STR
F0805B3R00FW/STR
F1206B0R25FW/STR
F1206B0R50FW/STR
F1206B1R00FW/STR
F1206B1R50FW/STR
F1206B2R00FW/STR
F1206B3R00FW/STR
F0612D4R00FWTR
F0612D5R00FWTR
Rating 10% x I rated, 25°C
A Ω (max.)
0.25 0.650
0.50 0.250
0.75 0.200
1.00 0.130
1.50 0.060
2.00 0.040
0.25 0.650
0.375 0.450
0.50 0.250
0.75 0.200
1.00 0.130
1.25 0.090
1.50 0.060
1.75 0.050
2.00 0.040
2.50 0.035
3.00 0.030
0.25 0.800
0.375 0.500
0.50 0.320
0.75 0.300
1.00 0.200
1.25 0.170
1.50 0.110
1.75 0.090
2.00 0.075
2.50 0.055
3.00 0.045
0.25 0.750
0.50 0.350
0.75 0.270
1.00 0.220
1.25 0.170
1.50 0.120
2.00 0.080
2.50 0.060
3.00 0.050
0.25 0.750
0.50 0.350
1.00 0.180
1.50 0.120
2.00 0.080
3.00 0.050
4.00 0.040
5.00 0.025
@1 x I rated, 25°C
mV (max.)
220
180
180
160
140
120
220
220
180
180
160
140
140
120
120
100
100
280
280
280
280
240
240
240
240
240
200
200
280
280
280
280
280
240
220
220
220
280
280
240
240
220
220
260
200
(within 5 sec), 25°C
A
0.625
1.25
1.875
2.50
3.75
5.00
0.625
0.940
1.25
1.875
2.50
3.125
3.75
4.375
5.00
6.25
7.50
0.50
0.75
1.00
1.50
2.00
2.50
3.00
3.50
4.00
5.00
6.00
0.50
1.00
1.50
2.00
2.50
3.00
4.00
5.00
6.00
0.50
1.00
2.00
3.00
4.00
6.00
10
12.5
I 2 t @ 50A
A 2 -sec
0.00005*
0.0003
0.003
0.008
0.03
0.06
0.00005*
0.0001
0.0003
0.003
0.008
0.01
0.03
0.04
0.06
0.12
0.25
0.00003*
0.0001
0.0002
0.0015
0.004
0.007
0.012
0.02
0.03
0.05
0.1
0.00003*
0.0002
0.001
0.003
0.007
0.010
0.030
0.050
0.10
0.00003
0.0002
0.003
0.010
0.030
0.10
0.10
0.25
Voltage
V
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
32
24
24
16
16
63
63
63
63
63
63
63
63
63
63
63
63
63
63
63
32
32
*Current is limited to less than 50A at 32V due to internal fuse resistance.
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