unisonic technologies co., ltd UMMSZ52XXB preliminary zener diode www.unisonic.com.tw 1 of 4 copyright ? 2014 unisonic technologies co., ltd qw-r601-085.d surface mount silicon zener diode ? description the utc UMMSZ52XXB is a surface mount silicon zener diode, it uses utc?s advanced technology to provide customers with low reverse leakage current, etc. the utc UMMSZ52XXB is suitable for automated assembly processes. ? features * low reverse leakage current ? symbol sot-23-3 sod-123/sod-323 sod-523/ll34 sod-523 sot-23-3 (jedec to-236) 1 3 2 sod-323 sod-123 1 2 1 2 1 2 ll-34 1 2 ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 3 UMMSZ52XXBl-ae2-r UMMSZ52XXBg-ae2-r sot-23-3 nc a k tape reel UMMSZ52XXBl-ca2-r UMMSZ52XXBg-ca2-r sod-123 a k - tape reel UMMSZ52XXBl-cb2-r UMMSZ52XXBg-cb2-r sod-323 a k - tape reel UMMSZ52XXBl-cc2-r UMMSZ52XXBg-cc2-r sod-523 a k - tape reel UMMSZ52XXBl-ll34-r UMMSZ52XXBg-ll34-r ll-34 a k - tape reel note: pin assignment: a: anode, k: cathode (1) r: tape reel (2) ae2: sot-23-3, ca2 : sod-123, cb2: sod-323 cc2: sod-523, ll34: ll-34 (3) l: lead free, g: halogen free (4) refer to electrical characteristics ummsz52xx bl -ae2 -r (1)packing type (2)package type (3)lead free (4)output voltage
UMMSZ52XXB preliminary zener diode unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r601-085.d ? marking information package voltage code marking sot-23-3 3.9: 3.9v 5.1: 5.1v 6.2: 6 . 2 v 8.2: 8.2v 15:15v 18: 18v 20: 20v 22: 22v 33:33v xxxb l: lead free g: halogen free voltage code sod-123 sod-323 sod-523
UMMSZ52XXB preliminary zener diode unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r601-085.d ? absolute maximum ratings parameter symbol ratings unit peak forward surge current, 8.3ms single half sine-wave superimposed on rated load (note 2) i fsm 4.0 a power dissipation at 75c (note 1) sod-123/ll-34 p d 500 mw sod-323 330 sod-523 250 sot-23-3 200 operating junction temperature t j -55~+150 c note: 1. absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. 2. mounted on 5.0mm 2 (.013mm thick) land areas. 3. measured on 8.3ms, single half sine-wave or equi valent square wave, duty cycle=4 pulses per minute maximum. ? electrical characteristics (v f = 1.2v max @ i f = 100ma for all types.) device marking code nominal zener voltage zener impedance reverse leakage current zener current v z @ i zt (v) z zt @ i zt z zk @ i zk i r @ v r i zm @ t a min typ max max ( ? )i z (ma) max ( ? )i z (ma) max (a) @v r (v) ma ummsz5228b 3.9 3.71 3.9 4.1 23 20 1900 0.25 10 1.0 115 ummsz5231b 5.1 4.85 5.1 5.36 17 20 1600 0.25 5.0 2.0 89 ummsz5232b 5.6 5.32 5.6 5.88 11 20 1600 0.25 5.0 3.0 81 ummsz5234b 6.2 5.89 6.2 6.51 7 20 1000 0.25 5.0 4.0 73 ummsz5236b 7.5 7.13 7.5 7.88 6.0 20 500 0.25 3.0 6.0 61 ummsz5237b 8.2 7.79 8.2 8.61 8 20 500 0.25 3.0 6.0 55 ummsz5243b 13 12.35 13 13.65 13 9.5 600 0.25 1.0 9.9 35 ummsz5245b 15 14.25 15 15.75 16 8.5 600 0.25 0.5 11 30 ummsz5248b 18 17.1 18 18.9 21 7 600 0.25 0.1 14 25 ummsz5250b 20 19 20 21 25 6.2 600 0.25 0.1 15 23 ummsz5251b 22 20.9 22 23.1 2 9 5.6 600 0.25 0.1 17 21 ummsz5254b 27 25.65 27 28.35 41 5 600 0.25 0.1 21 16.8 ummsz5257b 33 31.35 33 34.65 58 3.8 700 0.25 0.1 25 13.8
UMMSZ52XXB preliminary zener diode unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r601-085.d utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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