1SMA4749

1SMA4741~1SMA4754 SURFACE MOUNT SILICON ZENER DIODE VOLTAGE FEATURES • For surface mounted applications in order to optimize board space. • Low profile package • Built-in strain relief • Glass passivated junction • Low inductance • Typical IR less than 5.0µA above 11V • Plastic package has Underwriters Laboratory Flammability Classification 94V-O • High temperature soldering : 260°C /10 seconds at terminals .096(2.44) .062(1.60) .047(1.20) .114(2.90) .098(2.50) 11 to 39 Volts POWER 1.0 Watts SMA/DO-214AC Unit: inch (mm) .181(4.60) .157(4.00) Normal : 80~95% Sn, 5~20% Pb Pb free: 98.5% Sn above MECHANICALDATA Case: JEDEC DO-214AC,Molded plastic over passivated junction. Terminals: Solder plated,solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes positive end (cathode) Standard Packaging:12mm tape (EIA-481) Weight: 0.002 ounce, 0.064 gram .060(1.52) .030(0.76) .078(2.00) • Both normal and Pb free product are available : .012(.305) .006(.152) .008(.203) .002(.051) .208(5.28) .188(4.80) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25°C ambient temperature unless otherwise specified. Parameter Pwak Pulse Power Dissipation on TL= 7 5o C (NOTES A) Symbol PD TJ ,TS T G Value 1.0 Units W atts Operating Junction and Storage Temperature Range -55 to + 150 O C NOTES: A. Mounted on 5.0mm2 (.013mm thick) land areas. B. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of ± 5%. STAD-AUG.13.2005 PAGE . 1 1SMA4741~1SMA4754 N o m i na l Ze ne r V o l t a g e Part Number No m. V 1.0 Watt ZENER 1SMA4741 1SMA4742 1SMA4743 1SMA4744 1SMA4745 1SMA4746 1SMA4747 1SMA4748 1SMA4749 1SMA4750 1SMA4751 1SMA4752 1SMA4753 1SMA4754 11 12 13 15 16 18 20 22 24 27 30 33 36 39 10.5 11.4 12.4 14.3 15.2 17.1 19.0 20.9 22.8 25.7 28.5 31.4 34.2 37.1 11.6 12.6 13.7 15.8 16.8 18.9 21.0 23.1 25.2 28.4 31.5 34.7 37.8 41.0 8.0 9.0 10.0 14.0 16.0 20.0 22.0 23.0 25.0 35.0 40.0 45.0 50.0 60.0 23.0 21.0 19.0 17.0 15.5 14.0 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 741B 742B 743B 744B 745B 746B 747B 748B 749B 750B 751B 752B 753B 754B V Z @ IZT M i n. V M a x. V Z ZT @ IZT O hm s M a x i m u m Z e n e r Im p e d a n c e IZT mA Z ZK @ IZK O hm s IZK mA uA Leakage Current IR @VR V M a r k i ng Code STAD-AUG.13.2005 PAGE . 2 1SMA4741~1SMA4754 PM(AV) Average Power Dissipation (W) , 1.0 60 Hz Resistive or Inductive Load 0.75 0.5 0.25 P.C.B. Mounted on 0.31 x 0.31 x 0.08" (8 x 8 x 2mm) copper areas pads 0 25 100 125 150 75 50 Terminals Temperature ( °C) 175 FIGURE 1 - Maximum Continuous Power Dissipation FIGURE 2 - TEMPERATURE COEFICIENTS FIGURE 3 -EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE FIGURE 4 -EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE FIGURE 5 - TYPICAL CAPACITANCE versus V Z STAD-AUG.13.2005 PAGE . 3 1SMA4741~1SMA4754 FIGURE 6 - MAXIMUM SURGE POWER STAD-AUG.13.2005 PAGE . 4