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. 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 Current Resistance 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 *Current is limited to less than 50A at 32V due to internal fuse resistance. 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. Voltage Drop @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 Fusing Current (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 Pre-Arc I2t @ 50A A2-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 Rated 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 Accu-Guard® II SMD Thin-Film Fuse ENVIRONMENTAL CHARACTERISTICS Test Solderability Leach Resistance Storage Shear Rapid Change of Temperature Vibration Bend Conditions Components completely immersed in a solder bath at 235 ±5°C for 2 secs. Completely immersed in a solder bath at 260 ±5°C for 60 secs. 12 months minimum with components stored in “as received” packaging. Components mounted to a substrate. A force of 5N applied normal to the line joining the terminations and in a line parallel to the substrate. Components mounted to a substrate. 50 cycles -55°C to +125°C. Per Mil-Std-202F Method 201A and Method 204D Condition D. Tested as shown in diagram Requirement Terminations to be well tinned No visible damage Dissolution of termination ≤ 25% of area ΔR/R<10% Good solderability No visible damage No visible damage Δ R/R<10% No visible damage ΔR/R<10% No visible damage ΔR/R<10% 3 mm� Deflection 45mm Load Life F0805B, F1206B 8 45mm 25°C, rated current, 20,000 hrs. No visible damage ΔR/R<10% Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE TIME – CURRENT CHARACTERISTICS FOR TYPE F0402E (TYPICAL) 10 1 2.0A 1.5A 10-1 1.0A PreArc Time, 10-2 sec 0.75A 0.5A 0.25A -3 10 10-4 -5 10 10-6 0.1 1 10 Current, Amp 100 Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS CURRENT FOR TYPE F0402E (TYPICAL) 100 10 1 PreArc I 2 t, A 2 sec 10-1 2.0 A 10-2 1.5 A 10-3 1.0 A 10-4 0.7 5A 10-5 0.5 A 0.2 5A 10-6 0 10 20 30 Current, Amp 10 40 50 60 Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS PRE-ARC TIME FOR TYPE F0402E (TYPICAL) 100 100 0 10 1 0 -1 PreArc I2t, A2sec 10 -2 10 2.0A 0 1.5A -3 10 0 1.0A -4 10 -5 10 0 0.75A 0.5A 0 0.25A -6 10 0 0 0 -6 10 10 0 -5 10 0 -4 10 0 -3 10 0 -2 Pre-Arc Time, sec 10 0 -1 1 10 Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE TIME – CURRENT CHARACTERISTICS FOR TYPE F0603E (TYPICAL) 10 3.0 A 2.5 A 1 2.0 A 1.75A 1.5 A 10-1 1.25 A 1.0 A PreArc Time, sec 10-2 0.7 5A 0.5 A 0.375A -3 10 0.2 5A 10-4 10-5 10-6 0.1 1 10 Current, Amp 12 100 Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS CURRENT FOR TYPE F0603E (TYPICAL) 100 3.0A 2.5A 10 2.0A 1 Pre-Arc I2t, A2sec 1.75A 10-1 1.5A 1.25A 10-2 1.0A 10 -3 0.75A 0.5A 10-4 0.375A 10-5 0.25A 10-6 0 10 20 30 Current, Amp 40 50 60 Accu-Guard® II Lead-Free SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS PRE-ARC TIME FOR TYPE F0603E (TYPICAL) 100 3.0A 10 2.5A 2.0A 1 1.75A -1 10 PreArc I2t, A2sec 1.5A 1.25A -2 10 1.0A 0.75A -3 10 0.5A -4 10 0.375A -5 0.25A 10 -6 10 -6 10 10 -5 10 -4 10 -3 10 -2 Pre-Arc Time, sec 14 10 -1 1 10 Accu-Guard® II SMD Thin-Film Fuse FUSE TIME - CURRENT CHARACTERISTICS FOR TYPE F0603C (TYPICAL) 10 0.15A 0.25A 0.375A 0.50A 0.75A 1.00A 1.25A 1.5A 1.75A 2.0A 2.5A 3.0A 1 Pre-Arc Time, Seconds 10-1 10-2 10-3 10-4 10-5 10-6 0.1 1 10 Current, Amp 100 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. CURRENT FOR TYPE F0603C (TYPICAL) 100 10 Pre-Arc I2t, A2sec 1 10-1 10-2 3.00A 2.50A 2.00A 1.75A 1.50A 1.25A 1.00A 0.75A 0.50A 0.375A 0.25A 0.15A 10-3 10-4 10-5 10-6 0 10 20 30 Current, Amp 16 40 50 60 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. PRE-ARC TIME FOR TYPE F0603C (TYPICAL) 100 10 Pre-Arc I2t, A2sec 1 10-1 10-2 3.00A 2.50A 2.00A 1.75A 1.50A 1.25A 1.00A 0.75A 0.50A 0.375A 0.25A 0.15A 10-3 10-4 10-5 10-6 10-7 10-6 10-5 10-4 10-3 10-2 Pre-Arc Time, Seconds 10-1 1 10 Accu-Guard® II SMD Thin-Film Fuse FUSE TIME - CURRENT CHARACTERISTICS FOR TYPES F0805B AND F1206B (TYPICAL) 10 0.15A 1 0.25A 0.50A 0.75A 1.00A 1.25A 1.5A 2.0A 2.5A 3.0A Pre-Arc Time, Seconds 10-1 10-2 10-3 10-4 10-5 10-6 0.1 1 10 Current, Amp 18 100 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. CURRENT TIME FOR TYPES F0805B AND F1206B (TYPICAL) 100 10 Pre-Arc I2t, A2sec 1 10-1 10-2 3.00A 2.50A 2.00A 1.50A 1.25A 1.00A 0.75A 0.50A � 0.25A 0.15A 10-3 10-4 10-5 10-6 0 10 20 30 Current, Amp 40 50 60 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. PRE-ARC TIME FOR TYPES F0805B AND F1206B (TYPICAL) 100 10 Pre-Arc I2t, A2sec 1 10-1 10-2 3.00A 2.50A 2.00A 1.50A 1.25A 1.00A 0.75A 0.50A 0.25A 0.15A 10-3 10-4 10-5 10-6 10-7 10-6 10-5 10-4 10-3 10-2 Pre-Arc Time, Seconds 20 10-1 1 10 Accu-Guard® II SMD Thin-Film Fuse FUSE TIME - CURRENT CHARACTERISTICS FOR TYPE F0612D (TYPICAL) 10 1 Pre-Arc Time, Seconds 10-1 10-2 10-3 5.0A 4.0A 10-4 10-5 1 10 Current, Amp 100 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. PRE-ARC TIME FOR TYPE F0612D (TYPICAL) 1000 100 � Pre-Arc I2t, A2sec 10 � 1 5.00A 10-1 4.00A 10-2 10-3 10-4 10-5 10-6 10-5 10-4 10-3 10-2 Pre-Arc Time, Seconds 22 10-1 1 10 Accu-Guard® II SMD Thin-Film Fuse FUSE PRE-ARC JOULE INTEGRALS VS. CURRENT FOR TYPE F0612D (TYPICAL) 1000 100 Pre-Arc i2t, A2sec 10 1 5.00A 10-1 4.00A 10-2 10-3 10-4 10-5 0 10 20 30 Current, Amp 40 50 60