1N4728A~1N4764A
Zener diode
Features
1. High reliability
2. Very sharp reverse characteristi c
3. Low reverse current level
4. VZ-tolerance±5%
Applications
Voltage st abil ization
Absolute Maximum Ratings
Tj=25℃ Parameter Test Conditions Type Symbol Value Unit
Power dissipation Tamb≤50℃ P
V1 W
Z-current IZPV/VZmA
Junction temperature Tj200 ℃
Storage temperature range Tstg -65~+175 ℃
Maximum Thermal Resistance
Tj=25℃ Parameter Test Conditions Symbol Value Unit
Junction ambient I=9.5mm(3/8”) T L=constant RthJA 100 K/W
Stresses exceeding maximum rati ngs 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 Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF=200mA VF 1.2 V
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1N4728A~1N4764A
VZnom1) IZT for r
zjT rzjK at I
ZK IR at VR
Type V mA Ω Ω mA μA V
1N4728A 3.3 76 <10 <400 1 <100 1
1N4729A 3.6 69 <10 <400 1 <100 1
1N4730A 3.9 64 <9 <400 1 <50 1
1N4731A 4.3 58 <9 <400 1 <10 1
1N4732A 4.7 53 <8 <500 1 <10 1
1N4733A 5.1 49 <7 <550 1 <10 1
1N4734A 5.6 45 <5 <600 1 <10 2
1N4735A 6.2 41 <2 <700 1 <10 3
1N4736A 6.8 37 <3.5 <700 1 <10 4
1N4737A 7.5 34 <4.0 <700 0. 5 <10 5
1N4738A 8.2 31 <4.5 <700 0. 5 <10 6
1N4739A 9.1 28 <5.0 <700 0. 5 <10 7
1N4740A 10 25 <7 <700 0.25 <10 7.6
1N4741A 11 23 <8 <700 0.25 <5 8.4
1N4742A 12 21 <9 <700 0.25 <5 9.1
1N4743A 13 19 <10 <700 0.25 <5 9.9
1N4744A 15 17 <14 <700 0.25 <5 11.4
1N4745A 16 15.5 <16 <700 0.25 <5 12.2
1N4746A 18 14 <20 <750 0.25 <5 13.7
1N4747A 20 12.5 <22 <750 0.25 <5 15.2
1N4748A 22 11.5 <23 <750 0.25 <5 16.7
1N4749A 24 10.5 <25 <750 0.25 <5 18.2
1N4750A 27 9.5 <35 <750 0.25 <5 20.6
1N4751A 30 8.5 <40 <1000 0.25 <5 22.8
1N4752A 33 7.5 <45 <1000 0.25 <5 25.1
1N4753A 36 7.0 <50 <1000 0.25 <5 27.4
1N4754A 39 6.5 <60 <1000 0.25 <5 29.7
1N4755A 43 6.0 <70 <1500 0.25 <5 32.7
1N4756A 47 5.5 <80 <1500 0.25 <5 35.8
1N4757A 51 5.0 <95 <1500 0.25 <5 38.8
1N4758A 56 4.5 <110 <2000 0.25 <5 42.6
1N4759A 62 4.0 <125 <2000 0.25 <5 47.1
1N4760A 68 3.7 <150 <2000 0.25 <5 51.7
1N4761A 75 3.3 <175 <2000 0.25 <5 56
1N4762A 82 3.0 <200 <3000 0.25 <5 62.2
1N4763A 91 2.8 <250 <3000 0.25 <5 69.2
1N4764A 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℃,
9.5mm(3/8”) from the diode body.
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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
IRReverse leakage current @ VR
VRBreakdown voltage
IFForward current
VFForward 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
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1N4728A~1N4764A
Dimensions in mm
Cathode identification
Φ2.8 max.
Φ0.85 max.
4.5 max. 26 min. 26 min.
Cathode Anode
1
4
N
7
Standard Glass Case
JEDEC DO-41
Marking
1
4
2
N
7
8
A
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