DL4728A~DL4764A
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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DL4728A~DL4764A
VZnom1) IZT for r
zjT rzjK at I
ZK IR at VR
Type V mA Ω Ω mA μA 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
Excel Semiconductor
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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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
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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DL4728A~DL4764A
Dimensions in mm
Cathode identification
Excel Semiconductor
Φ2.8max
Φ2.6±0.2
5.0±0.2
0.4 0.4
Standard Glass Case
JEDEC LL-41
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