surface mount zene r diodes *500mw power dissipation *general purpose *ideal for surface mountted application *case : micro-melf glass case *weight : approx 0.01g features: mechanical data: unit:mm small signal zener diodes 0.5 watts a b a b c 1.20 1.30 1.35 2.0 1.8 1.35 micro-melf micro-melf micro-melf outline dimensions dim min max bzm55c series c r2.5 glass weitron http://www.weitron.com.tw 1/5 rev.a 12-oct-09 lead(pb)- f r ee p b
weitron maximum ratings and electrical characteristics (t a =25c unless otherwise noted) characteristics symbol unit v ?c/w c c r ja p d v f t stg value 500 500 1.5 -65 to+175 mw power dissipation, r ja 300?c/w i z p d /v z ma z-current thermal resistance junction to ambient (1) forward voltage @ if=200ma storage temperature range note: 1.on pc board 50 mm x 50mm x 1.6mm weitron http://www.weitron.com.tw 2/5 bzm55c series operation junction temperature range t j 175 rev.a 12-oct-09
electrical characteristics (t a =25 c unless otherwise noted, v f =1.5 v max. @i f =200ma for all types) weitron weitron http://www.weitron.com.tw 3/5 bzm55c series t y pe v znom i zt f o r v zt and r zjt r zjk at i zk i r and i r at v r tk vz bzm55c. v ma v 1) ma a 2) a v %/k 2v0 2.0 5 1. 9~2.1 100 <60 0 1 <15 0 <30 0 1 -0.09 ~ -0.06 2v2 2.2 5 2. 09 ~2.31 100 <60 0 1 <15 0 <30 0 1 -0.09 ~ -0.06 2v4 2.4 5 2. 28 ~2.56 <85 <60 0 1 <50 <10 0 1 -0.09 ~ -0.06 2 v7 2 . 7 5 2 .5 ~ 2 .9 < 8 5 <60 0 1 < 1 0 < 5 0 1 -0.09 ~ -0 .0 6 3 v0 3 . 0 5 2 .8 ~ 3 .2 < 8 5 <60 0 1 < 4 < 4 0 1 -0.08 ~ -0 .0 5 3 v3 3 . 3 5 3 .1 ~ 3 .5 < 8 5 <60 0 1 < 2 < 4 0 1 -0.08 ~ -0 .0 5 3 v6 3 . 6 5 3 .4 ~ 3 .8 < 8 5 <60 0 1 < 2 < 4 0 1 -0.08 ~ -0 .0 5 3 v9 3 . 9 5 3 .7 ~ 4 .1 < 8 5 <60 0 1 < 2 < 4 0 1 -0.08 ~ -0 .0 5 4 v3 4 . 3 5 4 .0 ~ 4 .6 < 7 5 <60 0 1 < 1 < 2 0 1 -0.06 ~ -0 .0 3 4v7 4.7 5 4.4~5.0 <60 <60 0 1 <0.5 <10 1 -0.05 ~ +0.02 5v1 5.1 5 4.8~5.4 <35 <55 0 1 <0.1 <2 1 -0.02 ~ +0.02 5v6 5.6 5 5.2~6.0 <25 <45 0 1 <0.1 <2 1 -0.05 ~ +0.05 6v2 6.2 5 5.8~6.6 <10 <20 0 1 <0.1 <2 2 0.03~0.06 6v8 6.8 5 6.4~7.2 <8 <15 0 1 <0.1 <2 3 0.03~0.07 7v5 7.5 5 7.0~7.9 <7 <50 1 <0.1 <2 5 0.03~0.07 8v2 8.2 5 7.7~8.7 <7 < 50 1 <0.1 <2 6.2 0.03~0.08 9v1 9.1 5 8. 5~9.6 <10 < 50 1 <0.1 <2 6.8 0.03~0.09 10 10 5 9.4~1 0 .6 <15 <70 1 <0.1 <2 7.5 0.03~0.1 1 1 1 1 5 10.4~1 1 .6 <20 <70 1 <0.1 <2 8.2 0.03~0.1 1 12 12 5 1 1 .4 ~12.7 <20 <90 1 <0.1 <2 9.1 0.03~0.1 1 13 13 5 12.4~14.1 <26 <1 10 1 <0.1 <2 10 0.03~0.1 1 15 15 5 13.8~15.6 <30 <1 10 1 <0.1 <2 1 1 0.03~0.1 1 16 16 5 15.3~17.1 <40 <17 0 1 <0.1 <2 12 0.03~0.1 1 18 18 5 16.8~19.1 <50 <17 0 1 <0.1 <2 13 0.03~0.1 1 20 20 5 18.8~21.2 <55 <22 0 1 <0.1 <2 15 0.03~0.1 1 22 22 5 20.8~23.3 <55 <22 0 1 <0.1 <2 16 0.04~0.12 24 24 5 22.8~25.6 <80 <22 0 1 <0.1 <2 18 0.04~0.12 27 27 5 25.1~28.9 <80 <22 0 1 <0.1 <2 20 0.04~0.12 30 30 5 28~32 <80 <22 0 1 <0.1 <2 22 0.04~0.12 33 33 5 31~35 <80 <22 0 1 <0.1 <2 24 0.04~0.12 36 36 5 34~38 <80 <22 0 1 <0.1 <2 27 0.04~0.12 39 39 2.5 37~41 <90 <50 0 0.5 < 0.1 < 5 30 0.04~0.12 43 43 2.5 40~46 <90 <60 0 0.5 < 0.1 < 5 33 0.04~0.12 47 47 2.5 44~50 <1 10 <70 0 0.5 < 0.1 < 5 36 0.04~0.12 51 51 2.5 48~54 <12 5 <70 0 0.5 < 0.1 < 10 39 0.04~0.12 56 56 2.5 52~60 <13 5 <10 0 0 0 .5 <0.1 <10 43 0.04~0.12 62 62 2.5 58~66 <15 0 <10 0 0 0 .5 <0.1 <10 47 0.04~0.12 68 68 2.5 64~72 <20 0 <10 0 0 0 .5 <0.1 <10 51 0.04~0.12 75 75 2.5 70~79 <25 0 <15 0 0 0 .5 <0.1 <10 56 0.04~0.12 82 82 2.5 77~87 <30 0 <20 0 0 0 .5 <0.1 <10 62 0.04~0.12 91 91 1.0 85~96 <45 0 <50 0 0 0 .1 <0.1 <10 68 0.04~0.12 100 100 1.0 94~106 <45 0 <50 0 0 0 .1 <0.1 <10 75 0.04~0.12 1) tighter tolerances available request: bzm55b? 2% of v znom 2) at t j =150 rev.a 12-oct-09
characteristics (t a =25?c unless otherwise specified) 0 4 0 8 0 12 0 160 0 100 300 400 500 600 ) w m ( n o i t a p i s s i d r e w o p l a t o t C p t o t t amb C ambient t emperature ( c ) 200 200 fig.1 t otal power dissipation vs. ambient t emperature 0 5 1 0 1 5 20 1 10 100 1000 ) v m ( e g n a h c e g a t l o v C v z v z C z- v oltage ( v ) 25 i z =5ma t j = 25 c fig.3 t ypical change of w orking v oltage under operating conditions at t am b =25 c C6 0 0 6 0 12 0 180 0.8 0.9 1.0 1.1 1.2 1.3 e g n a h c e g a t l o v e v i t a l e r C v n t z t j C junction t emperature ( c ) 240 v zt n =v zt /v z (25 c) tk v z =10 10 C4 /k 8 10 C4 /k C4 10 C4 /k 6 10 C4 /k 4 10 C4 /k 2 10 C4 /k C2 10 C4 /k 0 fig . 2 t ypical change of w orking v oltage vs. junction t emperature 0 1 0 2 0 30 C5 0 5 10 15 k / 0 1 ( v f o t n e i c i f f e o c e r u t a r e p m e t C k t ) z v v z C z- v oltage ( v ) 50 40 z 4 C i z =5ma fig.4 t emperature coe f ficient of vz vs. zC v oltage 0 5 1 0 15 0 50 100 150 200 ) f p ( e c n a t i c a p a c e d o i d C c d v z C z- v oltage ( v ) 25 20 t j = 25 c v r = 2v fig.5 diode capacitance vs. zC v oltage weitron weitron http://www.weitron.com.tw 4/5 rev.a 12-oct-09 bzm55c series
0 0. 2 0. 4 0. 6 0.8 0.001 0.01 0.1 1 10 100 1.0 ) a m ( t n e r r u c d r a w r o f C i f v f C forward v oltage ( v ) t j = 25?c fig.6 forward current vs. forward v oltage 0 4 8 1 2 16 20 0 20 40 60 80 100 ) a m ( t n e r r u c - z C i z v z C z- v oltage ( v ) p to t =500mw t amb =25 c figur e 8. zCcurrent vs. zC v oltage 1 5 2 0 2 5 30 0 10 20 30 40 50 ) a m ( t n e r r u c - z C i z v z C z- v oltage ( v ) 35 p to t =500mw t amb =25 c figur e 7. zCcurrent vs. zC v oltage 0 5 1 0 1 5 20 1 10 100 1000 ) ( e c n a t s i s e r - z l a i t n e r e f f i d C r z v z C z- v oltage ( v ) 25 t j = 25 c i z =1ma 5ma 10ma figur e 9. di f ferential zCresistance vs. zC v oltage 1 10 100 1000 ) w / ?c ( . d n o c e s l u p r o f e c n a t s i s e r l a m r e h t C z p h t t p C pulse length ( ms ) 0.1 1 10 100 t p /t=0.5 t p /t=0.2 t p /t=0.1 t p /t=0.05 t p /t=0.02 t p /t=0.01 single pulse r thj a =300?c/w t=t jmax Ct amb i zm =(Cv z +(v z 2 +4r z j t/z th p ) 1/ 2 )/(2r z j ) figur e 10. thermal response weitron weitron http://www.weitron.com.tw 5/5 rev.a 12-oct-09 bzm55c series
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