unisonic technologies co., ltd 1n4745a diode www.unisonic.com.tw 1 of 3 copyright ? 2014 unisonic technologies co., ltd qw-r601-211.a zener diode ? description the utc 1n4745a is a zener diode, it uses utc?s advanced technology to provide customers with low inductance and low reverse leakage, etc. the utc 1n4745a is suitable for use in stabilizing and clipping with high power rating. ? features * low reverse leakage * low inductance * glass passivated chip ? symbol do-41 ? ordering information ordering number package pin assignment packing lead free halogen free 1 2 1N4745AL-Z41-R 1n4745ag-z41-r do-41 k a tape reel note: pin assignment: a: anode k: cathode (1) r: tape reel (2) z41: do-41 (3) l: lead free, g: halogen free 1N4745AL-Z41-R (1)packing type (2)package type (3)lead free ? marking information package marking do-41 1n4745a date code l: lead free g: halogen free cathode band for uni-directional only
1n4745a diode unisonic technologies co., ltd 2 of 3 www.unisonic.com.tw qw-r601-211.a ? absolute maximum ratings (t a =25c unless otherwise noted) parameter symbol ratings unit forward voltage at i f =200ma v f 1.2 v dc power dissipation at t l =50c (note 2) p d 1 w junction temperature t j -55~+175 c storage temperature t stg -55~+175 c notes: 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. t l =lead temperature at 3/8 " (9.5mm) from body. 3. valid provided that leads are kept at ambient temperature at a distance of 10 mm from case. ? thermal data parameter symbol ratings unit junction to ambient air (note 3) ja 170 c/w ? electrical characteristics(cont.) part number nominal zener voltage maximum zener impedance maximum reverse leakage current maximum dc zener current maximum surge current v z @ i zt i zt z zt @ i zt z zk @ i zk i zk i r @ v r i zm i rm (v) (ma) ( ? ) ( ? ) (ma) ( a) (v) (ma) (mapk) 1n4745a 16 15.5 16 700 0.25 0.1 12.2 57 285
1n4745a diode unisonic technologies co., ltd 3 of 3 www.unisonic.com.tw qw-r601-211.a ? typical characteristics maximum power dissipation, p d (w) temperature coefficient, vz (mv/ ) typical thermal resist ance vs. lead length lead length to heatsink , l (inches) 0.01 maximum surge power pulse width, pw, (s) 1000 0 25 100 125 175 0 0.1 0.5 0.8 1 0.4 1 10 100 0.2 0.6 0.9 0.3 0.7 50 150 75 0.1 1 10 100 5% duty cycle 16v non-repetitive rectangular waveform t j =25 prior to initial pulse 10% duty cycle 20% duty cycle 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.
|
