accu-guard ? ii low current miniature 0402 size thin-film fuses the new f0402g accu-guard? series of fuses is based on thin-film technology which allows precise control of the component electrical and physical characteristics that is not possible with standard fuse technologies. the accu-guard low current series encompasses the lowest current ratings in a compact 0402 package and features lga terminations. electrical specifications operating temperature: -55oc to +125oc current carrying capacity: -55oc to -11oc 107% of rating -10oc to +60oc 100% of rating +61oc to +100c 85% of rating +101oc to +125c 80% of rating rated voltage: 32v post-fusing resistance: >1m current resistance voltage drop fusing current pre-arc i 2 t color part number rating @0.1 x i rated @i rated (within 5 sec) @10xi rated code a (max.) mv (max.) a a 2 -sec (typ) f0402g0r05fntr 0.050 3.4 250 0.125 2 x 10 -6 blue f0402g0r06fntr 0.062 2.5 280 0.155 2 x 10 -6 yellow F0402G0R07FNTR 0.075 2.0 280 0.1875 4 x 10 -6 brown f0402g0r10fntr 0.100 2.4 300 0.250 7 x 10 -6 red f0402g0r12fntr 0.125 1.6 250 0.312 1 x 10 -5 white f0402g0r15fntr 0.150 1.2 220 0.375 2 x 10 -5 green f0402g0r20fntr 0.200 0.8 210 0.500 4 x 10 -5 pink test conditions requirement solderability components completely immersed in a total area of imperfections in so lder coating solder bath at 245 5c for 3 secs. up to 5% of the land suface area leach resistance components completely immersed in a solder dissolution of termination bath at 255 5c for 60 secs. 15% of the land surface area storage 12 months minimum with components good solderability stored in as received packaging. shear components mounted to a substrate. destruction at 5n force minimu m increasing shearing force applied paralled to the sufstrate till destruction. temperature components mounted to a flexible substrate no visible damage cycling (e.g. fr C 4). 1000 cycles -55oc to +125oc. r/r<10% bend tested as shown in diagram no visible damage r/r<10% environmental characteristics 45mm 45mm 3 mm? deflection recommend pad layout millimeters (inches) 0.55 (0.022) 1.15 (0.045) 0.31 (0.012)
4 accu-guard ? ii low current miniature 0402 size thin-film fuses fuse time C current characteristics 0.1 1 10 10 -2 10 -1 10 -3 1 10 10 -6 10 -4 10 -5 200 ma 150 ma 125 ma 100 ma 75 ma 62 ma 50 ma current, amp pre-arc time, sec
accu-guard ? ii low current miniature 0402 size thin-film fuses fuse pre-arc joule integrals vs current 10 -2 10 -1 10 -3 1 10 -6 10 -5 10 -4 10 0 0.5 1 1.5 2 2.5 3 current, amp pre-arc i 2 t, a 2 sec 200 ma 150 ma 125 ma 100 ma 75 ma 62 ma 50 ma
6 accu-guard ? ii low current miniature 0402 size thin-film fuses fuse pre-arc joule integrals vs pre-arc time pre-arc time, seconds 10 -2 10 -1 10 -3 1 10 10 -6 10 -5 10 -4 pre-arc i 2 t, a 2 sec 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 110 200 ma 150 ma 125 ma 100 ma 75 ma 50 ma 62 ma
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