* High Reliability
* Very Sharp Reverse Characteristic
* Low Reverse Current Level
* Vz-Tolerance ±5%
Features:
WEITRON
http://www.weitron.com.tw
DL4728A thru DL4761A
SMALL SIGNAL
ZENER DIODES
1.0 WATTS
MELF
Unit: mm
MELF Outline Dimensions
A
B
C
Dim
A
B
C
Min
4.80
2.40
0.46
Max
5.20
2.67
0.60
MELF
* Voltage Stabillization
Applications:
Lead(Pb)-Free
P b
Surface Mount Zener Diodes
1/3 24-Oct-05
WEITRON
http://www.weitron.com.tw
DL4728A thru DL4761A
Absolute Maximum Ratings (Tj=25°C)
Parameter
Parameter
Parameter
Symbol Value
Value
Unit
Power dissipation Tamb ≤50°C PV1 W
Z-current IZPV/VZmA
Junction temperature Tj200 °C
Storage temperature range Tstg -65~+175 °C
Maximum Thermal Resistance (Tj=25°C)
Symbol Unit
Junction ambient I=9.5mm (3/8”) T L=constant RθJA 100 K/W
Electrical Characteristics (Tj=25°C)
Symbol Min Typ Max Unit
Forward voltage IF=200mA V F1.2
- - V
2/3 24-Oct-05
WEITRON
http://www.weitron.com.tw
DL4728A thru DL4761A
VZnom
1) IZT for rzjT rzjK at IZK IRat 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
1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature(TL)at 30℃,
9.5mm(3/8”) from the diode body.
2) Suffix “A” For ±5%.
3/3 24-Oct-05
