da221 / da204u / da204k / da228u / da228k / UMR12N diodes 1/3 switching diode da221 / da204u / da204 da228u / da228k / UMR12N ! ! ! ! applications bias circuits protection circuits ! ! ! ! features 1) three types of packages are available. (emd3,umd3,smd3) 2) two diode elements are connected in series (v f 2) per circuit. ! ! ! ! construction silicon epitaxial planar ! ! ! ! circuit da221 / da204u / da204k / da228u / da228k UMR12N d2 d2 d2 d1 d1 d1 ! ! ! ! external dimensions (units : mm) 0.3 + 0.1 0.15 0.05 0 0.1 2.0 0.2 1.3 0.1 0.65 0.65 1.25 0.1 ? 0 0.9 0.1 0.7 0.1 0.1 0.2 2.1 0.1 0.2 0.2 0.5 0.5 1.0 0.1 1.6 0.2 0.3 0.8 0.1 1.6 0.2 ? 0.05 + 0.1 + 0.1 ? 0.05 + 0.1 ? 0.05 0.55 0.1 0.7 0.1 0.15 0.05 0 0.1 0.1min. da221 da204u / da228u eiaj : sc-70 jedec : sot-323 da204k / da228k UMR12N rohm : emd3 eiaj : sc-75a jedec : sot-416 rohm : umd3 rohm : smd3 eiaj : sc-59 jedec : sot-346 rohm : umd6 eiaj : sc-88 jedec : sot-363 2.8 0.2 1.6 0.3 0.6 0.15 0.4 0 0.1 1.1 0.8 0.1 2.9 0.2 1.9 0.2 0.95 0.95 + 0.2 ? 0.1 + 0.2 ? 0.1 + 0.1 ? 0.06 + 0.1 ? 0.05 k 0.2 + 0.1 0.15 0.05 0 0.1 0.1min. 2.0 0.2 1.3 0.1 0.65 0.65 1.25 0.1 ? 0.05 0.9 0.1 0.7 2.1 0.1 r12 (all leads have the same dimensions) marking (all leads have the same dimensions) (all leads have the same dimensions) marking ! ! ! ! marking umd3 da204u da228u umd6 UMR12N ?? r12 smd3 da204k da228k k bu k bu emd3 da221 k ??
da221 / da204u / da204k / da228u / da228k / UMR12N diodes 2/3 ! ! ! ! absolute maximum ratings (ta=25 c) type v rm ( v) v r ( v) i fm ( ma) i o ( ma) i surge ( ma) (1 s) (total) pd(mw) tj( c) tstg( c) da221 20 20 200 100 300 150 150 ? 55~ + 150 da204u 20 20 200 100 300 200 150 ? 55~ + 150 ? 55~ + 150 ? 55~ + 150 da228k 80 80 200 100 300 200 150 ? 55~ + 150 UMR12N da228u da204k 80 80 200 100 300 200 150 ? 55~ + 150 80 20 80 20 200 200 100 100 300 300 200 200 150 150 peak reverse voltage peak forward current mean rectifying current surge current power dissipation junction temperature storage temperature dc reverse voltage ! ! ! ! electrical characteristics (ta=25 c) type forward voltage v f ( v) max. i r ( a) max. reverse current fig. cond. cond. i f ( ma) v r ( v) da221 1.0 10 0.1 15 1~4 da204u 1.0 10 0.1 0.1 0.1 15 5~9 UMR12N da228u 1.2 1.2 1.0 100 100 10 0.1 80 80 15 0.1 da228k da204k 1.2 100 80 1~4 5~9 1~4 5~9 ! ! ! ! electrical characteristic curves (ta=25 c) (da221, da204u, da204k) fig.1 4 0 ta=125 c d1 d1 + d2 0.4 0.8 1.2 1.6 2.0 2.4 100 10 1 1.0 0.01 75 c 25 c ? 25 c 125 c 75 c 25 c ? 25 c forward current : i f (ma) forward voltage : v f (v) fig.1 forward characteristics 0 ta=125 c 0.4 0.8 1.2 1.6 2.0 2.4 100 10 1 1.0 0.01 d2 75 c 25 c ? 25 c forward current : i f (ma) forward voltage : v f (v) fig.2 forward characteristics 0 d2 125 c d1 100 c d2 100 c d1 75 c d2 75 c 5 101520 0.01 0.1 1 10 100 d1 ta=125 c reverse current : i r (na) reverse voltage : v r (v) fig.3 reverse characteristics
da221 / da204u / da204k / da228u / da228k / UMR12N diodes 3/3 0.5 12 51020 1 2 5 10 capacitance between terminals : c t (pf) reverse voltage : v r (v) fig.4 capacitance between terminals characteristics (d2) (d1) (d1+d2) f=1mhz (da228u, da228k, UMR12N) fig.5 9 0 1 10 100 500 0.5 1.0 ta=125 c 75 c 25 c ? 25 c 1.5 forward current : i f (ma) forward voltage : v f (v) fig.5 forward characteristics d1 0 1 10 100 500 0.2 0.4 0.6 0.8 1.0 ta=125 c 75 c 25 c ? 25 c 1.2 forward current : i f (ma) forward voltage : v f (v) fig.6 forward characteristics d2 0 ta=125 c ta=75 c ta=25 c ta= ? 25 c 10 1 0.1 0.01 0.001 0.0001 25 50 75 reverse current : i r (na) reverse voltage : v r (v) fig.7 reverse characteristics d1 0 ta=125 c ta=75 c ta=25 c ta= ? 25 c 10 1 0.1 0.01 0.001 0.0001 25 50 75 reverse current : i r (na) reverse voltage : v r (v) fig.8 reverse characteristics d2 0 2 4 6 8 10 12 1 10 capacitance between terminals : c t (pf) reverse voltage : v r (v) fig.9 capacitance between terminals characteristics d2 d1 f=1mhz
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