DATA SHEET 1SMA4728~1SMA4764 SURFACE MOUNT SILICON ZENER DIODE VOLTAGE 3.3 to 100 Volts POWER 1.0 Watts SMA/DO-214AC Unit: inch (mm) FEATURES • For surface mounted applications in order to optimize board space. .114(2.90) .098(2.50) • Low profile package • Built-in strain relief .062(1.60) .047(1.20) • Glass passivated junction • Low inductance • Typical IR less than 5.0µA above 11V • Plastic package has Underwriters Laboratory Flammability Classification 94V-O .181(4.60) .157(4.00) • High temperature soldering : 260°C /10 seconds at terminals .096(2.44) environment substance directive request .012(.305) .006(.152) .078(2.00) • Pb free product are available : 99% Sn above can meet Rohs .060(1.52) .030(0.76) MECHANICALDATA .008(.203) .002(.051) .208(5.28) .188(4.80) Case: JEDEC DO-214AC,Molded plastic over passivated junction. Terminals: Solder plated,solderable per MIL-STD-202G, Method 208 Polarity: Color band denotes positive end (cathode) Standard Packaging:12mm tape (EIA-481) Weight: 0.002 ounce, 0.064 gram MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. P aram eter S ym bol Value U nits P w ak P ulse P ow erD issipation on TA =50 C (N otes A ) D erate above 50O C PD 1.0 6.67 W atts m W /O C P eak Forw ard S urge C urrent8.3m s single halfsine-w ave superim posed on rated load (JE D E C m ethod) IFSM 10 A m ps TJ,TSTG -55 to + 150 O O perating Junction and S torage Tem perature R ange O C NOTES: A. Mounted on 5.0mm2 (.013mm thick) land areas. B. Measured on8.3ms, and single half sine-wave or equivalent square wave ,duty cycle=4 pulses per minute maximum. C. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of ± 5%. STAD-JAN.27.2005 PAGE . 1 Maximum Zener Impedance V Z @ IZT Part Number Nom. V Min. V Maximum Leakage Current IR @V R Marking Code Package 1.0 728B SMA ZZT @ IZT ZZK @ IZK Max. V O mA O mA uA V 76.0 400 1.00 100 1.0 Watt ZENER Diodes -- continued 1SMA4728 3.3 3.1 3.5 10.0 1SMA4729 3.6 3.4 3.8 10.0 69.0 400 1.00 100 1.0 729B SMA 1SMA4730 3.9 3.7 4.1 9.0 64.0 400 1.00 50 1.0 730B SMA 1SMA4731 4.3 4.1 4.5 9.0 58.0 400 1.00 10 1.0 731B SMA 1SMA4732 4.7 4.5 4.9 8.0 53.0 500 1.00 10 1.0 732B SMA 1SMA4733 5.1 4.8 5.4 7.0 49.0 550 1.00 10 1.0 733B SMA 1SMA4734 5.6 5.3 5.9 5.0 45.0 600 1.00 10 2.0 734B SMA 1SMA4735 6.2 5.9 6.5 2.0 41.0 700 1.00 10 3.0 735B SMA 1SMA4736 6.8 6.5 7.1 3.5 37.0 700 1.00 10 4.0 736B SMA 1SMA4737 7.5 7.1 7.9 4.0 34.0 700 0.50 10 5.0 737B SMA 1SMA4738 8.2 7.8 8.6 4.5 31.0 700 0.50 10 6.0 738B SMA 1SAM4739 9.1 8.6 9.6 5.0 28.0 700 0.50 10 7.0 739B SMA 1SMA4740 10.0 9.5 10.5 7.0 25.0 700 0.25 10 7.6 740B SMA 1SMA4741 11.0 10.5 11.6 8.0 23.0 700 0.25 0.1 8.4 741B SMA 1SMA4742 12.0 11.4 12.6 9.0 21.0 700 0.25 0.1 9.1 742B SMA 1SMA4743 13.0 12.4 13.7 10.0 19.0 700 0.25 0.1 9.9 743B SMA 1SMA4744 15.0 14.3 15.8 14.0 17.0 700 0.25 0.1 11.4 744B SMA 1SMA4745 16.0 15.2 16.8 16.0 15.5 700 0.25 0.1 12.2 745B SMA 1SMA4746 18.0 17.1 18.9 20.0 14.0 750 0.25 0.1 13.7 746B SMA 1SMA4747 20.0 19.0 21.0 22.0 12.5 750 0.25 0.1 15.2 747B SMA 1SMA4748 22.0 20.9 23.1 23.0 11.5 750 0.25 0.1 16.7 748B SMA 1SMA4749 24.0 22.8 25.2 25.0 10.5 750 0.25 0.1 18.2 749B SMA 1SMA4750 27.0 25.7 28.4 35.0 9.5 750 0.25 0.1 20.6 750B SMA 1SMA4751 30.0 28.5 31.5 40.0 8.5 1000 0.25 0.1 22.8 751B SMA 1SMA4752 33.0 31.4 34.7 45.0 7.5 1000 0.25 0.1 25.1 752B SMA 1SMA4753 36.0 34.2 37.8 50.0 7.0 1000 0.25 0.1 27.4 753B SMA 1SMA4754 39.0 37.1 41 60.0 6.5 1000 0.25 0.1 29.7 754B SMA 1SMA4755 43.0 40.9 45.2 70.0 6.0 1500 0.25 0.1 32.7 755B SMA 1SMA4756 47.0 44.7 49.4 80.0 5.5 1500 0.25 0.1 35.8 756B SMA 1SMA4757 51.0 48.5 53.6 95.0 5.0 1500 0.25 0.1 38.8 757B SMA 1SMA4758 56.0 53.2 58.8 110 4.5 2000 0.25 0.1 42.6 758B SMA 1SMA4759 62.0 58.9 65.1 125 4.0 2000 0.25 0.1 47.1 759B SMA 1SMA4760 68.0 64.6 71.4 150 3.7 2000 0.25 0.1 51.7 760B SMA 1SMA4761 75.0 71.3 78.8 175 3.3 2000 0.25 0.1 56.0 761B SMA 1SMA4762 82.0 77.9 86.1 200 3.0 3000 0.25 0.1 62.2 762B SMA 1SMA4763 91.0 86.5 95.6 250 2.8 3000 0.25 0.1 69.2 763B SMA 1SMA4764 100 95.0 105 350 2.5 3000 0.25 0.1 76.0 764B SMA STD-JAN.27.2005 PAGE . 2 NOTE: 1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener voltage of + 5% 2. Specials Available Include: A. Nominal zener voltages between the voltages shown and tighter voltage tolerances. B. Matched sets. 3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining o o the lead temperature (T L ) at 30 C + 1 C, from the diode body. 4. Zener Impedance (Zz) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (Izt or Izk) is superimposed on Izt or Izk. 5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 P D , MAXIMUM POWER DISSIPATION (WATTS) RATING AND CHARACTERISTICS CURVES 1.0 L=LEAD LENGTH TO HEAT SINK 0.75 0.5 0.25 0 0 20 40 60 80 100 120 140 160 180 200 O T L , LEAD TEMPERATURE ( C) FIGURE.1 POWER TEMPERATURE DERATING CURVE a.RANGE FOR UNITS TO 12 VOLTS b.RANGE FOR UNITS 12 TO 100 VOLTS FIGURE.2 TEMPERATURE COEFICIENTS (-55 OC TO +150 OC TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.) STAD-JAN.27.2005 PAGE . 3 FIGURE.3TYPICAL THERMAL RESISTANCE versus LEAD LENGTH FIGURE.4 EFFECT OF ZENER CURRENT FIGU R E.5 MAXIMUM SURGE POWER FIGURE.6 EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE STAD-JAN.27.2005 FIGURE.7 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE PAGE . 4 Vz, ZENER VOLTAGE (VOLTS) m FIGURE.9 TYPICAL CAPACITANCE versus Vz FIGURE.8 TYPICAL LEAKAGE CURRENT STAD-JAN.27.2005 FIGURE.10 TYPICAL FORWARD CHARACTERISTICS PAGE . 5