7
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. Con struct ed on
alumina substrates, Accu-Guard
®
II fuses display superior
electrical, mechanical and en vi ron men tal 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.
Current Resistance Voltage Drop Fusing Current Pre-Arc Rated
Type Part Number Rating 10% x I rated, 25°C @1 x I rated, 25°C (within 5 sec), 25°C I
2
t @ 50A Voltage
A Ω (max.) mV (max.) A A
2
-sec V
F0402E0R25FSTR 0.25 0.650 220 0.625 0.00005* 32
F0402E0R50FSTR 0.50 0.250 180 1.25 0.0003 32
F0402E F0402E0R75FSTR 0.75 0.200 180 1.875 0.003 32
F0402E1R00FSTR 1.00 0.130 160 2.50 0.008 32
F0402E1R50FSTR 1.50 0.060 140 3.75 0.03 32
F0402E2R00FSTR 2.00 0.040 120 5.00 0.06 32
F0603E0R25FSTR 0.25 0.650 220 0.625 0.00005* 32
F0603E0R37FSTR 0.375 0.450 220 0.940 0.0001 32
F0603E0R50FSTR 0.50 0.250 180 1.25 0.0003 32
F0603E0R75FSTR 0.75 0.200 180 1.875 0.003 32
F0603E1R00FSTR 1.00 0.130 160 2.50 0.008 32
F0603E F0603E1R25FSTR 1.25 0.090 140 3.125 0.01 32
F0603E1R50FSTR 1.50 0.060 140 3.75 0.03 32
F0603E1R75FSTR 1.75 0.050 120 4.375 0.04 32
F0603E2R00FSTR 2.00 0.040 120 5.00 0.06 32
F0603E2R50FSTR 2.50 0.035 100 6.25 0.12 32
F0603E3R00FSTR 3.00 0.030 100 7.50 0.25 32
F0603C0R25FWTR 0.25 0.800 280 0.50 0.00003* 32
F0603C0R37FWTR 0.375 0.500 280 0.75 0.0001 32
F0603C0R50FWTR 0.50 0.320 280 1.00 0.0002 32
F0603C0R75FWTR 0.75 0.300 280 1.50 0.0015 32
F0603C1R00FWTR 1.00 0.200 240 2.00 0.004 32
F0603C F0603C1R25FWTR 1.25 0.170 240 2.50 0.007 32
F0603C1R50FWTR 1.50 0.110 240 3.00 0.012 32
F0603C1R75FWTR 1.75 0.090 240 3.50 0.02 24
F0603C2R00FWTR 2.00 0.075 240 4.00 0.03 24
F0603C2R50FWTR 2.50 0.055 200 5.00 0.05 16
F0603C3R00FWTR 3.00 0.045 200 6.00 0.1 16
F0805B0R25FW/STR 0.25 0.750 280 0.50 0.00003* 63
F0805B0R50FW/STR 0.50 0.350 280 1.00 0.0002 63
F0805B0R75FW/STR 0.75 0.270 280 1.50 0.001 63
F0805B1R00FW/STR 1.00 0.220 280 2.00 0.003 63
F0805B F0805B1R25FW/STR 1.25 0.170 280 2.50 0.007 63
F0805B1R50FW/STR 1.50 0.120 240 3.00 0.010 63
F0805B2R00FW/STR 2.00 0.080 220 4.00 0.030 63
F0805B2R50FW/STR 2.50 0.060 220 5.00 0.050 63
F0805B3R00FW/STR 3.00 0.050 220 6.00 0.10 63
F1206B0R25FW/STR 0.25 0.750 280 0.50 0.00003 63
F1206B0R50FW/STR 0.50 0.350 280 1.00 0.0002 63
F1206B
F1206B1R00FW/STR 1.00 0.180 240 2.00 0.003 63
F1206B1R50FW/STR 1.50 0.120 240 3.00 0.010 63
F1206B2R00FW/STR 2.00 0.080 220 4.00 0.030 63
F1206B3R00FW/STR 3.00 0.050 220 6.00 0.10 63
F0612D
F0612D4R00FWTR 4.00 0.040 260 10 0.10 32
F0612D5R00FWTR 5.00 0.025 200 12.5 0.25 32
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 is limited to less than 50A at 32V due to internal fuse resistance.
