zm4728a to zm4764a document number 85786 rev. 1.4, 15-sep-10 vishay semiconductors www.vishay.com 1 1 8 315 for technical questions with in your region, please c ontact one of the following: diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com zener diodes features ? silicon planar power zener diodes ? for use in stablilizing and clipping circuits with high power rating ? standard zener voltage tolerance is 5 % ? these diodes are also available in the do-41 case with type designation 1n4728a to 1n4764a ? aec-q101 qualified ? compliant to rohs directive 2002/95/ec and in accordance to weee 2002/96/ec ? halogen-free according to iec 61249-2-21 definition mechanical data case: melf do-213ab (glass) weight: approx. 135 mg cathode band color: black packaging codes/options: gs18/5k per 13" reel (12 mm tape), 10k/box gs08/1.5k per 7" reel (12 mm tape), 12k/box absolute maximum ratings t amb = 25 c, unless otherwise specified note: 1) valid provided that electrodes ar e kept at ambient temperature. thermal characteristics t amb = 25 c, unless otherwise specified note: 1) valid provided that electrodes ar e kept at ambient temperature. parameter test condition symbol value unit zener current (see table "characteristics") power dissipation p tot 1 1) w parameter test condition symbol value unit thermal resistance junction to ambient air r thja 170 1) k/w junction temperature t j 175 c storage temperature t stg - 65 to + 175 c
www.vishay.com 2 document number 85786 rev. 1.4, 15-sep-10 zm4728a to zm4764a vishay semiconductors for technical questions within your regi on, please contact one of the following: diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com electrical characteristics notes: 1) the zener impedance is derived from the 1 khz ac voltage which results when an ac current having an rms value equal to 10 % of the zener current (i zt or i zk ) is superimposed on i zt or i zk . zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units 2) valid provided that electrodes are kept at ambient temperature 3) measured under thermal equili brium and dc test conditions. part number nominal zener voltage 1) te s t current maximum dynamic impedance maximum reverse leakage current surge current 3) maximum regulator current 2) v z at i zt i zt z zt at i zt z zk at i zk i zk i r test voltage v r at t a = 25 c i r i zm v ma ma a v ma ma zm4728a 3.3 76 10 400 1 100 1 1380 276 zm4729a 3.6 69 10 400 1 100 1 1260 252 zm4730a 3.9 64 9 400 1 50 1 1190 234 zm4731a 4.3 58 9 400 1 10 1 1070 217 zm4732a 4.7 53 8 500 1 10 1 970 193 zm4733a 5.1 49 7 550 1 10 1 890 178 zm4734a 5.6 45 5 600 1 10 2 810 162 zm4735a 6.2 41 2 700 1 10 3 730 146 zm4736a 6.8 37 3.5 700 1 10 4 660 133 zm4737a 7.5 34 4 700 0.5 10 5 605 121 zm4738a 8.2 31 4.5 700 0.5 10 6 550 110 zm4739a 9.1 28 5 700 0.5 10 7 500 100 zm4740a 10 25 7 700 0.25 10 7.6 454 91 zm4741a 11 23 8 700 0.25 5 8.4 414 83 zm4742a 12 21 9 700 0.25 5 9.1 380 76 zm4743a 13 19 10 700 0.25 5 9.9 344 69 zm4744a 15 17 14 700 0.25 5 11.4 304 61 zm4745a 16 15.5 16 700 0.25 5 12.2 285 57 zm4746a 18 14 20 750 0.25 5 13.7 250 50 zm4747a 20 12.5 22 750 0.25 5 15.2 225 45 zm4748a 22 11.5 23 750 0.25 5 16.7 205 41 zm4749a 24 10.5 25 750 0.25 5 18.2 190 38 zm4750a 27 9.5 35 750 0.25 5 20.6 170 34 zm4751a 30 8.5 40 1000 0.25 5 22.8 150 30 zm4752a 33 7.5 45 1000 0.25 5 25.1 135 27 zm4753a 36 7 50 1000 0.25 5 27.4 125 25 zm4754a 39 6.5 60 1000 0.25 5 29.7 115 23 zm4755a 43 6 70 1500 0.25 5 32.7 110 22 zm4756a 47 5.5 80 1500 0.25 5 35.8 95 19 zm4757a 51 5 95 1500 0.25 5 38.8 90 18 zm4758a 56 4.5 110 2000 0.25 5 42.6 80 16 zm4759a 62 4 125 2000 0.25 5 47.1 70 14 zm4760a 68 3.7 150 2000 0.25 5 51.7 65 13 zm4761a 75 3.3 175 2000 0.25 5 56 60 12 zm4762a 82 3 200 3000 0.25 5 62.2 55 11 zm4763a 91 2.8 250 3000 0.25 5 69.2 50 10 zm4764a 100 2.5 350 3000 0.25 5 76 45 9
zm4728a to zm4764a document number 85786 rev. 1.4, 15-sep-10 vishay semiconductors www.vishay.com 3 for technical questions within your r egion, please contact one of the following: diodesamericas@vishay.com , diodesasia@vishay.com , diodeseurope@vishay.com typical characteristics t amb = 25 c, unless otherwise specified package dimensions in millimeters (inches): melf do-213ab (glass) figure 1. admissible power dissi pation vs. ambient temperature 1 8 2 8 9 w 1.0 0. 8 0.6 0.4 0.2 0 0100 200 c t am b p tot 1 8 317 foot print recommendation: the gap b et w een pl u g and glass can b e either on cathode or anode side cathode identification 4.00 (0.157) max. 1.25 (0.049) min. ref. 6.50 (0.256) 2.6 (0.102) 2.4 (0.094) 0.55 (0.022) 5.2 (0.205) 4. 8 (0.1 8 9) 3.00 (0.11 8 ) min.
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