lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 1 of 6 1n4896(a) C 1n 4915(a) available 1 2.8 volt low noise temperature c ompensated zener reference diodes description the 1n4896(a) thr ough 1n4915(a) series provides a selection of temperature compensate d 12.8 v (nominal) zener diodes. the voltage tolerace is +/ - 5% and the "a" version of the parts in this series have an expanded low temperature range down to - 55 o c. microsemi also offers numerous other zener r eference d iode products for a variety of other voltages. do - 35 (do - 204ah) package important: for the latest information, visit our website http://www.microsemi.com . features ? jedec registered 1n 4896 thru 1n 4915 series . ? 1 2.8 vol t nominal zener voltage +/ - 5% . ? temperature coefficient range: 0.01 %/ o c to 0.001%/ o c. ? m etallurgical ly bonded . ? double plug construction . ? rohs compliant versions available . applications / benefits ? provides minimal voltage changes over a broad temperature range. ? for instrumentation and other circuit designs requiring a stable voltage reference. ? low noise. ? flexible axial - lead mounting terminals. ? non - sensitive to esd per mil - s td - 750 m ethod 1020. m axim um ratings msc C law rence 6 lake street, lawren ce, ma 01841 tel: 1- 800 - 446 - 1158 or (978) 620 - 2600 fax: (978) 689 - 0803 msc C ireland gort road business park, ennis, co. clare, ireland tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: www.microsemi.com parameters/test conditions symbol value unit junction and storage temp eratur e t j and t stg -65 to +175 o c thermal resistance, junction to lead @ 0.375 inches from body r ? jl 300 oc /w off - state power dissipation @ t a = + 50 o c (1) p d 500 mw maximum reverse current @ 25 oc and v r = 8 v i rm 15 a solder temperature @ 10 s t sp 260 o c notes : 1. derate at 4 mw/ o c above t a = + 50 o c. downloaded from: http:///
lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 2 of 6 1n4896(a) C 1n 4915(a) mechanical and packaging ? cas e: hermetically sealed glass case with axial do - 35 (do - 204ah) package. ? terminals: tin - lead plated or rohs compliant matte -t in plating available and solderable per mil - s td - 750, m ethod 2026. ? marking: part number and cathode band. ? polarity: reference diode to be operated with the banded end positive with respect to the opposite end. ? tape & reel option: standard per eia - 296 . consult factory for quantities. (a dd tr suffix to part number .) ? weight: 0.2 grams. ? see pa ckage d imensions on the last page. part nomenclature 1n941 a (e3) jedec type number ( see electrical characteristics t able ) temperature coefficient range: a = - 55 o c to +100 o c blank = +25 o c to + 1 00 o c rohs compliance e3 = rohs c ompliant blank = non - rohs c ompliant symbols & definitions symbol definition i r reverse current: the maximum reverse (leakage) current that will flow at the specified volt age and temperature. i z , i zt , i zk reg ulator current: the dc regulator current (i z ), at a specified test point (i zt ), near breakdown knee (i zk ). i zm maximum regulator (zener) current: the maximum rated dc current for the specified power rati ng. v z zener voltage: the z ener voltage the device will exhibit at a specified current (i z ) in its breakdown region. z zt or z zk dynamic impedance: the small signal impedance of the diode when biased to operate in its breakdown region at a specified rms current modulation (typically 10% of i zt or i zk ) and superimposed on i zt or i zk respectively. downloaded from: http:///
lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 3 of 6 1n4896(a) C 1n 4915(a) electrical characteristics @ 25 o c unless otherwise specified. jedec type number test current i zt (note 1 & 5) max. voltage change with temperature ? v z (note 2 & 5) temperature range effective temperat ure coefficient vz (note 3) maximum dynamic impedance z zt (note 4) maximum noise density n d ma v olts o c +/ - %/ o c o hms uv cps 1n4896 1n4896a 1n4897 1n4897a 0.5 0.5 0.5 0.5 0.096 0.198 0.048 0.099 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.01 0.0 1 0.005 0.005 400 400 400 400 0.8 0.8 0.8 0.8 1n4898 1n4898a 1n4899 1n4899a 0.5 0.5 0.5 0.5 0.019 0.040 0.010 0.020 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.002 0.002 0.001 0.001 400 400 400 400 0.8 0.8 0.8 0.8 1n4900 1n4900a 1n4901 1n4901a 1.0 1.0 1.0 1.0 0.096 0.198 0.048 0.099 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.01 0.01 0.005 0.005 200 200 200 200 0.4 0.4 0.4 0.4 1n4902 1n4902a 1n4903 1n4903a 1.0 1.0 1.0 1.0 0.019 0.040 0.010 0.020 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.002 0.002 0.001 0.001 200 200 200 200 0.4 0.4 0.4 0.4 1n4904 1n4904a 1n4905 1n4905a 2.0 2.0 2.0 2.0 0.096 0.198 0.048 0.099 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.01 0.01 0.005 0.005 100 100 100 100 0.25 0.25 0.25 0.25 1n4906 1n4906a 1n4907 1n4907a 2.0 2.0 2.0 2.0 0.019 0.040 0.010 0.020 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.002 0.002 0.001 0.001 100 100 100 100 0.25 0.25 0.25 0.25 1n4908 1n4908a 1n4909 1n4909a 4.0 4.0 4.0 4.0 0.096 0.198 0.048 0.099 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.01 0.01 0.005 0.005 50 50 50 50 0.22 0.22 0.22 0.22 1n4910 1n4910a 1n4911 1n4911a 4.0 4.0 4.0 4.0 0.019 0.040 0.010 0.020 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.002 0.002 0.001 0.001 50 50 50 50 0.22 0.22 0.22 0.22 1n4912 1n4912a 1n4913 1n4913a 7.5 7.5 7.5 7.5 0.096 0.198 0.048 0.099 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.01 0.01 0.005 0.005 25 25 25 25 0.20 0.20 0.20 0.20 1n4914 1n4914a 1n4915 1n4915a 7.5 7.5 7.5 7.5 0.019 0.040 0.010 0.020 +25 to +100 - 55 to +100 +25 to +100 - 55 to +100 0.002 0.002 0.001 0.001 25 25 25 25 0.20 0.20 0.20 0.20 *jedec registered data. notes: 1. nominal voltage for all types is 12.8 volts +/ - 5%. 2. referred to as the box measurement method, the ? v z is the maximum voltage variance that will occur as the voltage is scanned thru all temperatures between the temperature range limits. 3. the effective temperature coefficients are tabulated in %/ o c primarily for information only since temperature compensated diodes inherently have a non - lin ear voltage - temperature characteristic. 4. the dynamic zener impedance z zt is derived from the resulting ac voltage developed when a 60 cps, rms ac current equal to 10% of the dc zener current i zt is superimposed on i zt . 5. voltage measurements to be performed 15 seconds after application of dc current . 6. consult factory for jan tx, jan txv or jans equivalent scds. downloaded from: http:///
lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 4 of 6 1n4896(a) C 1n 4915(a) graphs operating current i zt (ma) figure 1 z ener impedance vs. operating current ( 1n4896 thru 1n4915a ) operating current i zt (ma ) operating current i zt (ma) operating current i zt (ma) figure 2 typical change of temperature coefficient with change in operating current zener impedance z zt (ohms ) change in temperature coefficient %/c downloaded from: http:///
lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 5 of 6 1n4896(a) C 1n 4915(a) graphs (continued) operating current i zt (ma) operating current i zt (ma) figure 2 (continued) typical change of temperature coefficient with change in operating current t l lead temperature (c) 3/8 from body figure 3 figure 4 noise density measurement circuit power derating curve change in temperature coefficient %/c rated p o wer dissipation - mw noise density, (n d ) is specified in microvolt - rms per squre - root - hertz. actual measurement is performed using a 1 khz to 3 khz frequency bandpass filter at a constant zener test current (i zt ) at 25 o c ambient temperature. n d is calculated from the formula. downloaded from: http:///
lds -0 272 , rev . 1 (1 21 054 ) ?201 2 microsemi corporation page 6 of 6 1n4896(a) C 1n 4915(a) package dimensions symb ol dimen sio ns notes inch milli m eters min max min max bd .060 .107 1.52 2.72 3 bl .120 .300 3.05 7.62 3 ld .018 .023 0.46 0.58 ll 1.000 1.500 25.40 38.10 ll 1 .050 1.27 4 no t es: 1. dimens i ons are in in c hes. 2. millimeters are gi v en for g ene r al infor m ation only. 3. package c o ntour opt ional with in b d and l ength bl. h ea t slugs, if a ny, shall be in cl uded w it h in this cyl in d er but sh all n ot be su bje ct to minimum limit of bd. 4. within this zone, l e ad d ia m eter m ay vary t o al low for le ad finishes a nd ir r eg u larit i es, ot he r than h e at slugs. 5. in accorda n ce wit h asme y14.5m, dia me ters are eq u iv a lent to x sym bo log y. downloaded from: http:///
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