technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com 50 watt zener diodes qualified per mil-prf-19500/358 t4-lds-0077 rev. 2 (101152) page 1 of 6 devices levels 1n3305b thru 1n3350b & rb jan and jantx 1n4549b thru 1n4556b & rb jantxv b = standard polarity: rb = reverse polarity description do-5 (do-203ab) these high power 50w zener diodes represented by the jedec registered 1n3305b thru 1n3350b and 1n4549b th ru 1n4556b series provide voltage regulation in a selection over a 3.9v to 200v broad range of voltages. they may be operated up to 50 w with adequate mounting and heat sinking with their low thermal resistance. these zeners are also available in jan, jantx, jantxv military qualifications. microsemi also offers numerous othe r zener products to meet higher and lower power applications. important: for the most current data, consult microsemis website: http://www.microsemi.com features ? jedec registered 1n3305b thru 1n3350b and 1n4549b thru 1n4556b ? internal solder bond construction ? hermetically sealed (welded) ? zener voltage 3.9v to 200v. ? also available in jan, jantx, and jantxv qualifications per mil-prf- 19500/358 by adding the jan, jantx, or jantxv prefixes to part numbers for desired level of screening; (e.g. jantx1n3305b, jantxv1n3318b, etc. ? standard polarity is anode to case ? reverse polarity with cathode to case by designating r suffix in part number, e.g. 1n3305rb, etc. ? consult factory for surface mount equivalents downloaded from: http:///
technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com t4-lds-0077 rev. 2 (101152) page 2 of 6 applications / benefits ? regulates voltage over a broad operatin g current and temperature range ? standard voltage tolerances are +/- 5% with b suffix ? consult factory for +/-10% with an a suffix, +/-20% with no suffix, +/-2% with a c suffix and +/-1% with a d suffix respectively ? reverse polarity available ? nonsensitive to esd per mil-std-750 method 1020 ? inherently radiation hard as described in microsemi micronote 050 maximum ratings ? junction & storage temperatures: -65c to +175c ? dc power dissipation: 50 watts at t c < 75c ? power derating: 0.5 w/c above 75c ? forward voltage @ 10a: 1.5 volts ? thermal resistance: 2.0c/w maximum ju nction to hexagonal base (1.5c/w typical) ? solder temperatures: 260c for 10s (max) mechanical and packaging ? case: industry standard do-5 (do-203ab), 11/16 inch hexagonal stud with 1/4-28 threads welded hermetically sealed metal and glass ? finish: all external surfaces are corrosi on resistant and terminal solderable. ? polarity: standard polarity units are connected anode to case. reverse polarity (cathode to case) is indicated by suffix r in part number ? weight: 15 grams ? mounting hardware: consult factory for optional insulator, bushing, solder terminal, washers and nut ? see package dimensions on last page downloaded from: http:///
technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com t4-lds-0077 rev. 2 (101152) page 3 of 6 electrical characteristics @ 30oc case temperature jedec type no. (note 1) nominal zener voltage v z @ i zt volts (note 2) ? zener test current ( i zt ) ma ? max. dynamic impedance (note 3) ? max. dc zener current ( i zm ) ma max. reverse current** i r (max) @ v r typical temp. coeff. vz %/ o c z zt @ i zt ohms z zk @ i zk = 5 ma ohms a volts ?1n4549b ?1n4550b ?1n4551b ?1n4552b ?1n4553b ?1n4554b 1n4555b 1n4556b 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 3,200 2,900 2,650 2,450 2,250 2,000 1,850 1,650 0.16 0.16 0.12 0.12 0.12 0.14 0.16 0.24 400 500 600 650 900 1,000 200 100 11,900 10,650 9,700 8,900 8,100 7,300 6,650 6,050 150 150 100 20 20 20 10 10 0.5 0.5 1.0 1.0 1.0 2.0 2.0 3.0 -0.046 -0.033 -0.015 +/-0.010 +0.030 +0.049 +0.053 +0.057 ?1n3305b ?1n3306b ?1n3307b ?1n3308b ?1n3309b ?1n3310b 6.8 7.5 8.2 9.1 10.0 11.0 1,850 1,700 1,500 1,370 1,200 1,100 0.20 0.30 0.40 0.50 0.60 0.80 70 70 70 70 80 80 6,600 5,900 5,200 4,800 4,300 3,900 300 125 50 25 25 10 4.5 5.0 5.4 6.1 6.7 8.4 0.040 0.045 0.048 0.050 0.055 0.060 ?1n3311b ?1n3312b 1n3313b ?1n3314b ?1n3315b 1n3316b 12.0 13.0 14.0 15.0 16.0 17.0 1,000 960 890 830 780 740 1.00 1.10 1.20 1.40 1.60 1.80 80 80 80 80 80 80 3,800 3,300 3,000 2,800 2,650 2,500 10 10 10 10 10 10 9.1 9.9 11.4 11.4 12.2 13.0 0.065 0.065 0.070 0.070 0.070 0.075 ?1n3317b 1n3318b ?1n3319b ?1n3320b ?1n3321b 1n3322b 18.0 19.0 20.0 22.0 24.0 25.0 700 660 630 570 520 500 2.00 2.20 2.40 2.50 2.60 2.70 80 80 80 80 80 90 2,300 2,200 2,100 1,900 1,750 1,550 10 10 10 10 10 10 13.7 13.7 15.2 16.7 18.2 18.2 0.075 0.075 0.075 0.080 0.080 0.080 ?1n3323b ?1n3324b ?1n3325b ?1n3326b ?1n3327b ?1n3328b 27.0 30.0 33.0 36.0 39.0 43.0 460 420 380 350 320 290 2.80 3.00 3.20 3.50 4.00 4.50 90 90 90 90 90 90 1,500 1,400 1,300 1,150 1,050 975 10 10 10 10 10 10 20.6 22.8 25.1 27.4 29.7 32.7 0.085 0.085 0.085 0.085 0.090 0.090 1n3329b ?1n3330b 1n3331b ?1n3332b 1n3333b ?1n3334b 45.0 47.0 50.0 51.0 52.0 56.0 280 270 250 245 240 220 4.50 5.00 5.00 5.20 5.50 6.00 100 100 100 100 100 110 930 880 830 810 790 740 10 10 10 10 10 10 32.7 35.8 38.8 38.8 42.6 42.6 0.090 0.090 0.090 0.090 0.090 0.090 ?1n3335b ?1n3336b ?1n3337b ?1n3338b ?1n3339b ?1n3340b 62.0 68.0 75.0 82.0 91.0 100.0 200 180 170 150 140 120 7.00 8.00 9.00 11.00 15.00 20.00 120 140 150 160 180 200 660 600 540 490 420 400 10 10 10 10 10 10 47.1 51.7 56.0 62.2 69.2 76.0 0.090 0.090 0.090 0.090 0.090 0.090 1n3341b ?1n3342b ?1n3343b ?1n3344b 1n3345b ?1n3346b 105.0 110.0 120.0 130.0 140.0 150.0 120 110 100 95 90 85 25.00 30.00 40.00 50.00 60.00 75.00 210 220 240 275 325 400 380 365 335 310 290 270 10 10 10 10 10 10 83.0 83.0 91.2 99.8 114.0 114.0 0.095 0.095 0.095 0.095 0.095 0.095 ?1n3347b 1n3348b ?1n3349b ?1n3350b 160.0 175.0 180.0 200.0 80 70 68 65 80.00 85.00 90.00 100.00 450 500 525 600 250 230 220 200 10 10 10 10 121.6 121.6 136.8 152.0 0.095 0.095 0.095 0.100 downloaded from: http:///
technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com t4-lds-0077 rev. 2 (101152) page 4 of 6 * jedec registered data. ** not jedec data. ? have jan and jantx and txv qualifications to mil-s-19500/358. see further notes on following page. notes: 1. the jedec type numbers shown (b suffix) have a +/ - 5% tolerance on nominal zener voltage. if other tolerance is required consult factory. the suffix a is u sed to identify +/-10% tolerance; no suffix or just r indicates +/-20% tolerance: c suffix indicates +/-2% to lerance; and d suffix indicates +/-1%. example: 1n3319rb is a reversed polarity, 20 volt unit having a +/-5% tolerance on zener voltage. 2. zener voltage (v z ) is measured with junction in thermal equilibrium with 30 o c stud temperature. 3. the zener impedance is derived from the 60 cycle ac volta ge, 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 on i zt or i zk . zener impedance is measured at 2 points to ensure a sharp knee on the br eakdown curve and to eliminate unstable units. a curve showing the variation of zener impedan ce vs. zener current for three representa tive types is shown in figure 2. also see microsemi micronote 202. downloaded from: http:///
technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com t4-lds-0077 rev. 2 (101152) page 5 of 6 graphs stud temperature o c figure 1 power derating curve figure 2 typical zener impedance vs. zener current rated power dissipation - watts downloaded from: http:///
technical data sheet 6 lake street, lawrence, ma 01841 gort road business park, ennis, co. clare, ireland 1-800-446-1158 / (978) 620-2600 / fax: (978) 689-0803 tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: http: //www.microsemi.com t4-lds-0077 rev. 2 (101152) page 6 of 6 package dimensions notes: dimensions 1. dimensions are in inches. ltr inches millimeters notes 2. maximum pitch diameter of plated threads shall be basic pitch diameter; min max min max (.2268). .250-28 unf-2b unf-2a thd nf optional. b --- .375 --- 9.53 3. complete threads to extend to with in 1-1/2 threads of seating plane. c --- .080 --- 2.03 4. angular orientation of this terminal is undefined. cd --- .667 --- 16.94 5. metric equivalents are given for general information only. ch --- .450 --- 11.43 6. diameter of unthreaded portion shall be .249 maximum and .220 hf .667 .687 16.94 17.45 minimum ht .060 --- 1.52 --- oah --- 1.000 --- 25.40 sl .422 .453 10.72 11.51 2, 3, 6 ud .220 .249 t --- .175 --- 4.45 figure 1. physical dimensions. downloaded from: http:///
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