number: db - 226 nov, 2010 / a page 1 s em ic ond uc tor 1 watt ll - 41 hermetically sealed glass zener voltage regulators absolute maximum ratings t a = 25c unless otherwise noted parameter value units storage temper ature range - 65 to +200 c maximum junction operating temperature + 175 c total device dissipation 1.0 watt thermal resistance junction to ambient 1 70 c / w these ratings are limiting values above which the serviceability of the diode may be impaired. specification features: ? zener voltage range 3.3 to 56 volts ? ll - 41 melf package (jedec do - 213ab ) ? surface mount devices (smd) ? hermetically sealed glass ? compression bonded construction ? all e xternal s urfaces a re c orrosion r esistant a nd terminal s a re r eadily s olderable ? rohs compliant ? matte tin (sn) lead f inish ? color band i ndicates n egative p olarity electrical characteristics t a = 25c unless otherwise noted device type v z @ i zt (volts) nominal i zt (ma) z zt @ i zt ( ? ) max i zk (ma) z zk @ i zk ( ? ) max i r @ v r ( ? a) max v r (volts) z m 4728a 3.3 76 10 1 400 100 1 z m 4729a 3.6 69 10 1 400 100 1 z m 4730a 3.9 64 9 1 400 50 1 z m 4731a 4.3 58 9 1 400 10 1 z m 4732a 4.7 53 8 1 500 10 1 z m 4733a 5.1 49 7 1 550 10 1 z m 4734a 5.6 45 5 1 6 00 10 2 z m 4735a 6.2 41 2 1 700 10 3 z m 4736a 6.8 37 3.5 1 700 10 4 z m 4737a 7.5 34 4 0.5 700 10 5 z m 4738a 8.2 31 4.5 0.5 700 10 6 z m 4739a 9.1 28 5 0.5 700 10 7 z m 4740a 10 25 7 0.25 700 10 7.6 z m 4741a 11 23 8 0.25 700 5 8.4 z m 4742a 12 21 9 0.25 700 5 9.1 z m 4743a 13 19 10 0.25 700 5 9.9 z m 4744a 15 17 14 0.25 700 5 11.4 z m 4745a 16 15.5 16 0.25 700 5 12.2 z m 4746a 18 14 20 0.25 700 5 13.7 cathode anode electrical symbol z m 4 728a through z m 4758a surface mount ll - 4 1 device marking diagram cathode band color: blue
number: db - 226 nov, 2010 / a page 2 s em ic ond uc tor electrical characteristics t a = 25c unless otherwise noted device type vz @ izt (volts) nominal izt (ma) zzt @ izt ( ? ) max izk (ma) zzk @ izk ( ? ) max ir @ vr ( ? a) max vr (volts) zm 4747a 20 12.5 22 0.25 750 5 15.2 zm 4748a 22 11.5 23 0.25 750 5 16.7 z m 4 749a 24 10.5 25 0.25 750 5 18.2 z m 4750a 27 9.5 35 0.25 750 5 20.6 z m 4751a 30 8.5 40 0.25 1000 5 22.8 z m 4752a 33 7.5 45 0.25 1000 5 25.1 z m 4753a 36 7 50 0.25 1000 5 27.4 z m 4754a 39 6.5 60 0.25 1000 5 29.7 z m 4755a 43 6 70 0.25 1500 5 32.7 z m 4756a 47 5.5 80 0.25 1500 5 35.8 z m 4757a 51 5 95 0.25 1500 5 38.8 z m 4758a 56 4.5 110 0.25 2000 5 42.6 v f forward voltage = 1.2 v maximum @ i f = 200 ma for all types notes: 1. the device numbers listed have a standard tolerance on the nominal zener voltage of ? 5%. 2. for detailed information on price, availability and delivery of n ominal zener voltages between the voltages shown and tighter voltage tolerances, contact your nearest tak cheongs representative. 3. the zener impedance is derived from the 60 - cycle ac voltage, which results when an ac current having an rms value equal to 10 % of the dc zener current ( i zt or i zk ) is superimposed to i zt or i zk.
number: db - 226 nov, 2010 / a page 3 s em ic ond uc tor package outline package case outline ll - 41 melf ll - 41 melf millimeters inches dim min max min max a 4.80 5.20 0.189 0.205 b 2.39 2.66 0.094 0.105 c 0.41 0.55 0.016 0.022 notes: 1. all dimensions are within do - 213ab jedec standard. 2. ll - 41 melf polarity denoted by cathode band. b c a
number: db-111 april 29, 2008 / a disclaimer notice notice the information presented in this document is for reference only. tak cheong reserves the right to make changes without notice for the specification of the products displayed herein. the product listed herein is designed to be used with ordinary electronic equipment or devices, and not designed to be used with equipment or devices which require high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), tak cheong semiconductor co., ltd., or anyone on its behalf, as sumes no responsibility or liability for any damagers resulting from such improper use of sale. this publication supersedes & replaces all information previously supplied. for additional information, please visit our website http://www.takcheong.com , or consult your nearest tak cheong?s sales office for further assistance.
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