3 surface mount fuses ?2008 littelfuse, inc. revision: may 27, 2008 thin film > 1206 size > very fast-acting > 466 series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/466.html for current information. 466 series 466 series fuse description the 466 series fast-acting surface mount fuse (smf) is a small (1206 size) thin-?lm device designed for secondary protection of circuits used in space constrained applications such as hand-held portable electronic devices. this series is 100% lead-free and meets the requirements of the rohs directive. new halide-free 466 series fuses are availableCto order use the hf suf?x. see part numbering section for additional information. agency approvals agency agency file number ampere range ? ? features electrical characteristics for series t 1 s p e v d u j t d p n q b u j c m f with lead-free solders and higher temperature pro?les. t 1 s p e v d u j t n b s l f e p o top surface with code to allow amperage rating identi?cation without testing. t - p x q s p m m f g p s i f j h i u sensitive applications. t ' m b u u p q t v s g b d f g p s q j d l and-place operations. t & m f n f o u d p w f s j o h material is resistant to industry standard cleaning operations. t . p v o u j o h q b e b o e electrical performance is identical to littelfuse 429 and 433 series products. t " m m p z c b t f e f m f n f o u construction provides superior inrush withstand characteristics (i 2 t) over ceramic or glass based 1206 chip fuse products. % of ampere rating opening time at 25 o c 100% 4 hours, minimum 200% 5 sec., maximum 300% 0.2 sec., maximum applications ampere rating (a) amp code max voltage rating (v) interrupting rating nominal cold resistance (ohms) nominal melting i 2 t (a 2 sec) nom voltage drop (mv) nom power dissipation (w) agency approvals ? ? 0.125 .125 125 50a @125 v ac/ dc 4.000 0.00040 552.66 0.0691 x x 0.200 .200 125 1.160 0.00055 254.28 0.0509 x x 0.250 .250 125 0.710 0.0010 207.01 0.0518 x x 0.375 .375 125 0.350 0.0028 169.18 0.0634 x x 0.500 .500 63 50a @63 v ac/dc 0.248 0.0060 158.47 0.0792 x x 0.750 .750 63 0.111 0.0276 98.65 0.0740 x x 1.00 001. 63 0.076 0.0423 89.94 0.0899 x x 1.25 1.25 63 0.059 0.0640 85.71 0.1071 x x 1.50 01.5 63 0.048 0.1103 82.97 0.1244 x x 1.75 1.75 63 0.039 0.1323 80.73 0.1413 x x 2.00 002. 63 0.031 0.2326 78.73 0.1575 x x 2.50 02.5 32 50a @32 v ac/dc 0.024 0.3516 76.99 0.1925 x x 3.00 003. 32 0.020 0.5760 75.99 0.2280 x x 4.00 004. 32 0.014 1.024 74.50 0.2980 x x 5.00 005. 32 0.011 1.600 73.75 0.3688 x x electrical speci?cations by item 1. measured at 10% of rated current, 25oc. 2. measured at rated voltage. rohs pb ? ? t $ f m m q i p o f t t # b u u f s z q b d l t t % j h j u b m d b n f s b t t % 7 % q m b z f s t t ) b s e e j t l e s j w f t secondary protection for space constrained applications:
4 revision: may 27, 2008 surface mount fuses ?2008 littelfuse, inc. thin film > 1206 size > very fast-acting > 466 series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/466.html for current information. 466 series average time current curves time in seconds current in amperes 0.01 0.1 0.1 1 1 10 100 10 100 0.001 4a 3a 2 1/2a 2a 1 3/4a 1 1/2a 1 1/4a 1a 3/4a 1/2a 3/8a 1/4a 1/8a 5a re?ow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 180 secs average ramp up rate (liquidus temp (t l ) to peak 5c/second max t s(max) to t l - ramp-up rate 5c/second max re?ow - temperature (t l ) (liquidus) 217c - temperature (t l ) 60 C 150 seconds peak temperature (t p ) 250 +0/-5 c time within 5c of actual peak temperature (t p ) 20 C 40 seconds ramp-down rate 5c/second max time 25c to peak temperature (t p ) 8 minutes max. do not exceed 260c soldering parameters temperature rerating curve wave soldering 260c, 10 seconds max.
5 surface mount fuses ?2008 littelfuse, inc. revision: may 27, 2008 thin film > 1206 size > very fast-acting > 466 series speci?cations are subject to change without notice. please refer to www.littelfuse.com/series/466.html for current information. 466 series dimensions 2.03 (.080") 2.03 (.080") wave solder reflow solder 3.81 (.150") 1.27 (.050") .58 (.023") .56 (.022") .66 (.026") 1.14 (.045") marking code varies with amperage rating (see chart) 1.52 (.060") 3.18 (.125") 3.18 (.125") 4.83 (.190") 1.65 (.065") 1.52 (.060") sn sn sn cu coating packaging part numbering system materials body: advanced high temperature substrate terminations: 100% tin over nickel over copper element cover coat: conformal coating operating temperature C 55 o c to 90 o c. consult temperature rerating curve chart. thermal shock withstands 5 cycles of C55 o c to 125 o c humidity mil-std-202f, method 103b, condition d product characteristics vibration per mil-std-202f, method 201a insulation resistance (after opening) greater than 10,000 ohms resistance to soldering heat mil-std-202g, method 210f, condition d part marking system packaging option packaging speci?cation quantity quantity & packaging code 8mm tape and reel eia rs-481-2 (iec 286, part 3) 5000 nr amp code marking code .125 b .200 c .250 d .375 e .500 f .750 g 001. h 1.25 j 01.5 k 1.75 l 002. n 02.5 o 003. p 004. s 005. t 0466002.nrhf series amp code hf suffix halide free item packaging code the dot is poisitioned before the pack- aging suf?x with whole ratings and within the numbering sequence for fractional ratings. refer to amp code column in the electrical speci?cations table. nr = 5000 pcs r = tape and reel example: .125 amp product is 0466. 125 nr hf (2 amp product shown above).
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