ZM4728A - ZM4764A ZENER DIODES
V
Z
:
3.3 to 100V
P
D
:
1W
FEATURES :
• Silicon planar power zener diodes
• For use in stabilizing and clipping circuits with
higher power rating.
• Standard zener voltage tolerance is ± 5%.
• Other zener voltages and tolerances are
available upon request.
• These diodes are also available in the DO-41
case with type designation 1N4728A ... 1N4764A
• Pb / RoHS Free
MECHANICAL DATA :
* Case : MELF Glass Case
* Weight : 0.25 g (approximately)
Maximum Ratings and Thermal Characteristics
Rating at
25
°
C ambient temperature unless otherwise specified
.
Symbol Value Unit
Zener Current see Table "Characteristics"
Maximum Forward Voltage at IF = 200 mA. VF1.2 V
Power Dissipation PD11) W
Thermal Resistance Junction to Ambient Air RθJA 170(1) °C/W
Junction temperature TJ-65 to + 200 °C
Storage temperature range TS-65 to + 200 °C
Note: (1) Valid provided that electrodes are kept at ambient temperature
Page 1 of 2 Rev. 03 : March 25, 2005
Parameter
Dimensions in inches and ( millimeters )
MELF
0.205(5.2)
0.189(4.8)
φ 0.102 (2.6)
0.094 (2.4)
0.022(0.55)
Cathode Mark
Mounting Pad Layout
0.256 (6.50)
REF
0.049 (1.25)Min.
0.157 (4.00)
Max.
0.118 (3.00)Min.
ELECTRICAL CHARACTERISTICS
(
Ta
=
25
°
C unless otherwise noted
)
Nominal Zener Maximum Reverse Maximum DC
Voltage Leakage Current Zener Current
VZ @ IZT IZT ZZT @ IZT ZZK @ I ZK IZK IR @ VRIZM(2)
(V) (mA) (Ω) (Ω)(mA)
(
µ
A)
(V) (mA)
ZM4728A 3.3 76.0 10 400 1.0 100 1.0 276
ZM4729A 3.6 69.0 10 400 1.0 100 1.0 252
ZM4730A 3.9 64.0 9.0 400 1.0 50 1.0 234
ZM4731A 4.3 58.0 9.0 400 1.0 10 1.0 217
ZM4732A 4.7 53.0 8.0 500 1.0 10 1.0 193
ZM4733A 5.1 49.0 7.0 550 1.0 10 1.0 178
ZM4734A 5.6 45.0 5.0 600 1.0 10 2.0 162
ZM4735A 6.2 41.0 2.0 700 1.0 10 3.0 146
ZM4736A 6.8 37.0 3.5 700 1.0 10 4.0 133
ZM4737A 7.5 34.0 4.0 700 0.5 10 5.0 121
ZM4738A 8.2 31.0 4.5 700 0.5 10 6.0 110
ZM4739A 9.1 28.0 5.0 700 0.5 10 7.0 100
ZM4740A 10 25.0 7.0 700 0.25 10 7.6 91
ZM4741A 11 23.0 8.0 700 0.25 5.0 8.4 83
ZM4742A 12 21.0 9.0 700 0.25 5.0 9.1 76
ZM4743A 13 19.0 10 700 0.25 5.0 9.9 69
ZM4744A 15 17.0 14 700 0.25 5.0 11.4 61
ZM4745A 16 15.5 16 700 0.25 5.0 12.2 57
ZM4746A 18 14.0 20 750 0.25 5.0 13.7 50
ZM4747A 20 12.5 22 750 0.25 5.0 15.2 45
ZM4748A 22 11.5 23 750 0.25 5.0 16.7 41
ZM4749A 24 10.5 25 750 0.25 5.0 18.2 38
ZM4750A 27 9.5 35 750 0.25 5.0 20.6 34
ZM4751A 30 8.5 40 1000 0.25 5.0 22.8 30
ZM4752A 33 7.5 45 1000 0.25 5.0 25.1 27
ZM4753A 36 7.0 50 1000 0.25 5.0 27.4 25
ZM4754A 39 6.5 60 1000 0.25 5.0 29.7 23
ZM4755A 43 6.0 70 1500 0.25 5.0 32.7 22
ZM4756A 47 5.5 80 1500 0.25 5.0 35.8 19
ZM4757A 51 5.0 95 1500 0.25 5.0 38.8 18
ZM4758A 56 4.5 110 2000 0.25 5.0 42.6 16
ZM4759A 62 4.0 125 2000 0.25 5.0 47.1 14
ZM4760A 68 3.7 150 2000 0.25 5.0 51.7 13
ZM4761A 75 3.3 175 2000 0.25 5.0 56.0 12
ZM4762A 82 3.0 200 3000 0.25 5.0 62.2 11
ZM4763A 91 2.8 250 3000 0.25 5.0 69.2 10
ZM4764A 100 2.5 350 3000 0.25 5.0 76.0 9.0
Notes:
(1) The Zener impedance is derived from the 1KHz AC voltage which results when an AC current having an RMS value equal
to 10% of the Zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at two points to
insure a sharp knee on the breakdown curve and to eliminate unstable units
(2) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature
(
3
)
The type number listed have a standard tolerance on the nominal zener voltage of
±
5
%.
Page 2 of 2 Rev. 03 : March 25, 2005
Type Maximum Zener Impedance(1)
