1N4728A~1N4764A 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 1N4728A~1N4764A Type 1N4728A 1N4729A 1N4730A 1N4731A 1N4732A 1N4733A 1N4734A 1N4735A 1N4736A 1N4737A 1N4738A 1N4739A 1N4740A 1N4741A 1N4742A 1N4743A 1N4744A 1N4745A 1N4746A 1N4747A 1N4748A 1N4749A 1N4750A 1N4751A 1N4752A 1N4753A 1N4754A 1N4755A 1N4756A 1N4757A 1N4758A 1N4759A 1N4760A 1N4761A 1N4762A 1N4763A 1N4764A VZnom1) V 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 IZT mA 76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3.7 3.3 3.0 2.8 2.5 for rzjT <10 <10 <9 <9 <8 <7 <5 <2 <3.5 <4.0 <4.5 <5.0 <7 <8 <9 <10 <14 <16 <20 <22 <23 <25 <35 <40 <45 <50 <60 <70 <80 <95 <110 <125 <150 <175 <200 <250 <350 rzjK at <400 <400 <400 <400 <500 <550 <600 <700 <700 <700 <700 <700 <700 <700 <700 <700 <700 <700 <750 <750 <750 <750 <750 <1000 <1000 <1000 <1000 <1500 <1500 <1500 <2000 <2000 <2000 <2000 <3000 <3000 <3000 IZK mA 1 1 1 1 1 1 1 1 1 0. 5 0. 5 0. 5 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 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 IR A <100 <100 <50 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 at VR V 1 1 1 1 1 1 2 3 4 5 6 7 7.6 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 32.7 35.8 38.8 42.6 47.1 51.7 56 62.2 69.2 76 1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature(TL)at 30, 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 1N4728A~1N4764A 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 1N4728A~1N4764A Dimensions in mm Cathode identification 0.85 max. 1N 47 Cathode 26 min. 4.5 max. Anode 2.8 max. 26 min. Standard Glass Case JEDEC DO-41 Marking 1N 47 28 A Excel Semiconductor www.excel-semi.com FaxBack +86-512-66607370 Rev. 3e, 1-Nov-2006 4/4