leadless glass zener diodes www. microsemi . com scottsdale division 1n3821ur-1 thru 1n3830aur-1, e3 or mll3821 thru mll3830a, e3 1n3821ur-1 thru 1n3830aur-1,e3 or mll3821 thru mll3830a,e3 hru mll3830a,e3 description appearance this surface mountable zener diode series is similar to the lower voltage 1n3821 thru 1n3830 jedec registration except it is in a surface mount do-213ab package outline. it is an ideal selection for applications of high density and low parasitic requirements. due to its glass hermetic qualities and enhanced metallurgical bonded internal construction, it is also well suited for high reliability applications. this can be acquired by a source control drawing (scd), or simply by ordering device types with a mq, mx or mv prefix for equivalent scr eening to jan, jantx or jantxv respectively. do-213ab important: for the most current data, consult microsemi?s website: http://www.microsemi.com features applications / benefits ? leadless package for surface mount equivalent to 1n3821 thru 1n3830a. ? ideal for high-density mounting ? lower voltage selections of 3.3 v to 7.5 v ? hermetically sealed, double-slug glass construction ? metallurgically enhanced contact construction ? options for screening in accordance with mil-prf- 19500/115 for jan, jantx, and jantxv with mq, mx or mv prefixes respectively for part numbers, e.g. mx1n3821aur-1, mv1n3828aur-1, etc. ? axial lead ?thru-hole? do-13 packages per jedec registration available as 1n3821a thru 1n3830a (see separate data sheet wi th mil-prf-19500/115 qualification) ? rohs compliant devices available by adding ?e3? suffix ? regulates voltage over a broad operating current and temperature range ? leadless package for surface mounting ? tight voltage tolerances available ? ideal for high-density mounting ? metallurgically enhanced internal contact design for greater reliability and lower thermal resistance ? nonsensitive to esd ? hermetically sealed glass package ? specified capacitance (see figure 2) ? inherently radiation hard as described in microsemi micronote 050 maximum ratings mechanical and packaging ? power dissipation at 25 o c: 1.5 watts (also see derating in figure 1). ? operating and storage temperature: -65 o c to +175 o c ? thermal resistance: 40 o c/w junction to end cap, or 120 o c/w junction to ambient when mounted on fr4 pc board (1 oz cu) with recommended footprint (see last page) ? steady-state power: 1.50 watts at end-cap temperature t ec < 115 o c, or 1.25 watts at t a = 25 o c when mounted on fr4 pc board and recommended footprint as described for thermal resistance (also see figure 1) ? forward voltage @200 ma: 1.2 volts (maximum) ? solder temperatures: 260 o c for 10 s (max) ? case: hermetically sealed glass melf package ? terminals: tin-lead (sn/pb) or rohs compliant annealed matte-tin (sn) plating solderable per mil-std-750, method 2026 ? polarity: cathode indicated by band. diode to be operated with the banded end positive with respect to the opposite end for zener regulation ? marking: cathode band only ? tape & reel optional: standard per eia-481-1- a with 12 mm tape, 1500 per 7 inch reel or 5000 per 13 inch reel (add ?tr? suffix to part number) ? weight: 0.05 grams ? see package dimensions on last page microsemi scottsdale division page 1 copyright ? 2006 3-12-2006 rev c 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
leadless glass zener diodes www. microsemi . com scottsdale division 1n3821ur-1 thru 1n3830aur-1, e3 or mll3821 thru mll3830a, e3 1n3821ur-1 thru 1n3830aur-1,e3 or mll3821 thru mll3830a,e3 *electrical characteristics @ 25 o c maximum zener impedance (note 2) nominal zener voltage v z @ i zt (note 1) zener test current i zt z zt @ i zt z zk @ i zk = 1 ma maximum zener current i zm (note 3) maximum reverse current i r @ v r typical temp.coeff. of zener voltage vz industry type number** (note 1) microsem i part number (note 3) volts ma ohms ohms ma a volt s %/ o c 1n3821ur-1 1n3821aur-1 1n3822ur-1 1n3822aur-1 mll3821 mll3821a mll3822 mll3822a 3.3 3.3 3.6 3.6 76 76 69 69 10 10 10 10 400 400 400 400 414 414 378 378 100 100 100 100 1 1 1 1 -.066 -.066 -.058 -.058 1n3823ur-1 1n3823aur-1 1n3824ur-1 1n3824aur-1 mll3823 mll3823a mll3824 mll3824a 3.9 3.9 4.3 4.3 64 64 58 58 9 9 9 9 400 400 400 400 357 357 320 320 50 50 10 10 1 1 1 1 -.046 -.046 -.033 -.033 1n3825ur-1 1n3825aur-1 1n3826ur-1 1n3826aur-1 mll3825 mll3825a mll3826 mll3826a 4.7 4.7 5.1 5.1 53 53 49 49 8 8 7 7 500 500 550 550 291 291 267 267 10 10 10 10 1 1 1 1 -.015 -.015 +/-.010 +/-.010 1n3827ur-1 1n3827aur-1 1n3828ur-1 1n3828aur-1 mll3827 mll3827a mll3828 mll3828a 5.6 5.6 6.2 6.2 45 45 41 41 5 5 2 2 600 600 700 700 243 243 219 219 10 10 10 10 2 2 3 3 +.030 +.030 +.049 +.049 1n3829ur-1 1n3829aur-1 1n3830ur-1 1n3830aur-1 mll3829 mll3829a mll3830 mll3830a 6.8 6.8 7.5 7.5 37 37 34 34 1.5 1.5 1.5 1.5 500 500 250 250 200 200 182 182 10 10 10 10 3 3 3 3 +.053 +.053 +.057 +.057 * jedec registered data for 1n3821 thru 3830a equivalent s except for lower reverse (leakage) current i r and higher maximum zener current i zm . ** when applicable, add mq, mx, or mv prefix to the 1n3821aur-1 thru 1n3828aur-1 part numbers for screening options in accorda nce with mil-prf-19500/115. note 1: suffix a signifies a +/-5% tolerance on nominal zener voltage. no suffix designates +/-10% tolerance. if tighter tolerance i s required, suffix c is used to identify +/-2%; and suffix d is to identify +/-1% tolerance. v z is measured with the diode in thermal equilibrium in 25 o c still air. the test currents (i zt ) at the listed nominal zener volta ges provide a constant 0.25 watts for this device series per jedec registration. note 2: the zener impedance is derived when a 60 cycle ac current having an rms value equal to 10% of the dc zener current (i zt or i zk ) is superimposed on i zt or i zk . zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve and to eliminate unstable units. see micronot e 202 for variation in dynamic impedance with different zener currents. note 3: this product series has been previously identified as mll3821 thru mll3830a by microsemi. this alternate name may still be used, however the industry name of 1n3821ur-1 thru 1n3830ur-1 is preferred. microsemi scottsdale division page 2 copyright ? 2006 3-12-2006 rev c 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
leadless glass zener diodes www. microsemi . com scottsdale division 1n3821ur-1 thru 1n3830aur-1, e3 or mll3821 thru mll3830a, e3 1n3821ur-1 thru 1n3830aur-1,e3 or mll3821 thru mll3830a,e3 ru mll3830a,e3 outline and circuit steady-state power derating p d power dissipation (watts) t ec t a temperature ( o c ) . figure 2 typical capacitance vs. reverse voltage figure 1 typical zener impedance vs zener current for types shown package dimensions inches millimeters dim min max min max 0.094 0.105 2.39 2.66 a 0.189 0.205 4.80 5.20 b 0.016 0.022 0.41 0.55 c microsemi scottsdale division page 3 copyright ? 2006 3-12-2006 rev c h figure 3 typical zener voltage temperature coeff. vs. zener voltage inches mm a .276 7.00 b 0.070 1.8 c 0.110 2.8 pad layout 8700 e. thomas rd. po box 1390, scottsdale, az 85252 usa, (480) 941-6300, fax: (480) 947-1503
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