6 lake street, lawrence, massachusetts 01841 phone (978) 620-2600 fax (978) 689-0803 website: http://www.microsemi.com 19 ? 1n935b-1, 1n937b-1 and 1n938b-1 available in jan , jantx, jantxv and jans per mil-prf-19500/156 ? 9.0 volt nominal zener voltage ? temperature compensated zener reference diodes ? metallurgically bonded 1n935 thru 1n938b and 1n935b-1 thru 1n938b-1 figure 1 design data case: hermetically sealed glass case. do ? 35 outline. lead material: copper clad steel. lead finish: tin / lead polarity: diode to be operated with the banded (cathode) end positive. mounting position: any. maximum ratings operating temperature: -65c to +175c storage temperature: -65c to +175c dc power dissipation: 500mw @ +50c power derating: 4 mw / c above +50c reverse leakage current l r = 10 a @ 25c & v r = 6 vdc electrical characteristics @ 25c, unless otherwise speci?ed. note 1 zener impedance is derived by superimposing on l zt a 60hz rms a.c. current equal to 10% of l zt . note 2 the maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the speci?ed mv at any discrete temperature between the established limits, per jedec standard no. 5. jedec zener zener maximum voltage temperature effective type voltage test zener temperature range temperature number current impedance stability coefficient v z @ i zt i zt (note 1) 3v zt z zt maximum (note 2) volts ma ohms mv c % / c 1n935 8.55?9.45 7.5 20 67 0 to + 75 0.01 1n935a 8.55?9.45 7.5 20 139 -55 to +100 0.01 1n935b 8.55?9.45 7.5 20 184 -55 to +150 0.01 1n936 8.55?9.45 7.5 20 34 0 to + 75 0.005 1n936a 8.55?9.45 7.5 20 70 -55 to +100 0.005 1n936b 8.55?9.45 7.5 20 92 -55 to +150 0.005 1n937 8.55?9.45 7.5 20 13 0 to + 75 0.002 1n937a 8.55?9.45 7.5 20 28 -55 to +100 0.002 1n937b 8.55?9.45 7.5 20 37 -55 to +150 0.002 1n938 8.55?9.45 7.5 20 6.7 0 to + 75 0.001 1n938a 8.55?9.45 7.5 20 13.9 -55 to +100 0.001 1n938b 8.55?9.45 7.5 20 19 -55 to +150 0.001
20 1n935 thru 1n938b including -1 versions 0 25 50 75 100 125 150 175 t l , lead temperature (c) 3/8? from body figure 2 power derating curve 600 500 400 300 200 100 0 pd, rated power dissipation (mw) 5678910 operating current l zt (ma) figure 3 zener impedance vs. operating current 5678910 operating current l zt (ma) figure 4 typical change of temperature coefficient with change in operating current +.0015 +.0010 +.0005 0 -.0005 -.0010 -.0015 change in temperature coefficient ( %/c) 100 50 40 30 20 10 5 4 3 2 1 zener impedance z zt (ohms)
|
