DL4728A~DL4764A Zener diode Features 1. High reliability 2. Very sharp reverse characteristic 3. Low reverse current level 4. VZ-tolerance5% Applications Voltage stabilization Absolute Maximum Ratings Tj=25 Parameter Test Conditions Type Symbol Value Unit PV 1 W Z-current IZ PV/VZ mA Junction temperature Tj 200 Tstg -65~+175 Symbol Value Unit RthJA 100 K/W Tamb50 Power dissipation Storage temperature range Maximum Thermal Resistance Tj=25 Parameter Junction ambient Test Conditions I=9.5mm(3/8") TL=constant Stresses exceeding maximum ratings may damage the device. Maximum ratings are stress ratings only. Functional operation above the recommended operating conditions is not implied. Extended exposure to stresses above the recommended operating conditions may affect device reliability. Electrical Characteristics Tj=25 Parameter Forward voltage Test Conditions Type IF=200mA Symbol VF Min Typ Max Unit 1.2 V Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3e, 1-Nov-2006 1/4 DL4728A~DL4764A VZnom1) IZT for rzjT rzjK at IZK IR at VR V mA mA A V DL4728A 3.3 76 <10 <400 1 <100 1 DL4729A 3.6 69 <10 <400 1 <100 1 DL4730A 3.9 64 <9 <400 1 <50 1 DL4731A 4.3 58 <9 <400 1 <10 1 DL4732A 4.7 53 <8 <500 1 <10 1 DL4733A 5.1 49 <7 <550 1 <10 1 DL4734A 5.6 45 <5 <600 1 <10 2 DL4735A 6.2 41 <2 <700 1 <10 3 DL4736A 6.8 37 <3.5 <700 1 <10 4 DL4737A 7.5 34 <4.0 <700 0. 5 <10 5 DL4738A 8.2 31 <4.5 <700 0. 5 <10 6 DL4739A 9.1 28 <5.0 <700 0. 5 <10 7 DL4740A 10 25 <7 <700 0.25 <10 7.6 DL4741A 11 23 <8 <700 0.25 <5 8.4 DL4742A 12 21 <9 <700 0.25 <5 9.1 DL4743A 13 19 <10 <700 0.25 <5 9.9 DL4744A 15 17 <14 <700 0.25 <5 11.4 DL4745A 16 15.5 <16 <700 0.25 <5 12.2 DL4746A 18 14 <20 <750 0.25 <5 13.7 DL4747A 20 12.5 <22 <750 0.25 <5 15.2 DL4748A 22 11.5 <23 <750 0.25 <5 16.7 DL4749A 24 10.5 <25 <750 0.25 <5 18.2 DL4750A 27 9.5 <35 <750 0.25 <5 20.6 DL4751A 30 8.5 <40 <1000 0.25 <5 22.8 DL4752A 33 7.5 <45 <1000 0.25 <5 25.1 DL4753A 36 7.0 <50 <1000 0.25 <5 27.4 DL4754A 39 6.5 <60 <1000 0.25 <5 29.7 DL4755A 43 6.0 <70 <1500 0.25 <5 32.7 DL4756A 47 5.5 <80 <1500 0.25 <5 35.8 DL4757A 51 5.0 <95 <1500 0.25 <5 38.8 DL4758A 56 4.5 <110 <2000 0.25 <5 42.6 DL4759A 62 4.0 <125 <2000 0.25 <5 47.1 DL4760A 68 3.7 <150 <2000 0.25 <5 51.7 DL4761A 75 3.3 <175 <2000 0.25 <5 56 DL4762A 82 3.0 <200 <3000 0.25 <5 62.2 DL4763A 91 2.8 <250 <3000 0.25 <5 69.2 DL4764A 100 2.5 <350 <3000 0.25 <5 76 1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature(TL)at 30, Type 9.5mm(3/8") from the diode body. Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3e, 1-Nov-2006 2/4 DL4728A~DL4764A Characteristics (Tj=25 unless otherwise specified) Symbol Parameter Vz Reverse zener voltage @ IZT IZT Reverse current ZZT Maximum zener impedance @ IZT IZK Reverse current ZZK Maximum zener impedance @ IZK IR Reverse leakage current @ VR VR Breakdown voltage IF Forward current VF Forward voltage @ IF Figure 1. Zener voltage regulator Figure 2. Temperature coefficients (-55 to +150 temperature range; 90% of the units are in the ranges indicated) Figure 3. Effect of zener current on zener impedance Figure 4. Effect of zener voltage on zener impedance Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3e, 1-Nov-2006 3/4 DL4728A~DL4764A Dimensions in mm Cathode identification 0.4 2.60.2 0.4 5.00.2 2.8max Standard Glass Case JEDEC LL-41 Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3e, 1-Nov-2006 4/4