Features
Hermetic Glass Package
Silicon Planar Zener Diodes
Mechanical Data
Case: DO-41 Glass Package
Weight: 0.309 grams (Approx.)
Maximum Ratings
Operating Temperature: -65oC to +200oC
Storage Temperature: -65oC to +200oC
For capacitive load, derate current by 20%
Electrical Characteristics @ 25oC Unless Otherwise Specified
Note: (1) Valid provided that electrodes at a distance
of 10mm from case are kept at ambient
temperature.
1N4728
THRU
1N476
1.0 Watt
Zener Diode
3.3 to 75 Volts
A
B
C
D
D
Cathode
Mark
DO-41G
omponents
20736 Marilla Street Chatsworth
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M C C
DC Power
Dissipation Pd 1.0W TA50OC
Forward
Thermal
Resistance RthJA 100K/W Note 1
Power Derating
from 100oCPtot 10mW/oC
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Marking : Cathode band and type number
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1N4728
THRU
1N4761
Voltage VF1.2V
Drop
≤
Revision: 12 2008/07/30
Lead Free Finish/Rohs Compliant (Note2) ("P"Suffix designates
Compliant. See ordering information)
(2).Lead in Glass Exemption Applied, see EU Directive Annex 5.
- - - - - - - - - - 4.50
0.177
MIN MA X MIN MAX
A
DI M ENS ION S
DIM
INCH ES M M
NO TE
- - - - - - - - - -
C 0.0 2 6 0.0 3 4 0.70 0.90 Diameter
D 1.0 0 0 ----- 2 5.4 0 -----
B2.80
0.110 Diameter
Note 1: The JEDEC type number shown with an A suffix have a 5% tolerance on nominal zener voltage. No
suffix signifies a 10% tolerance, C signifies 2%.
2: The Zener impedance is derived from the 60 Hz ac voltage, which results when an ac current having an
rms value equal to 10% of the DC Zener current(IZT or IZK) is superimposed on IZT or IZK. Zener
impedance is measured at two points to insure a sharp knee on the breakdown curve and eliminate
unstable units.
3: The reverse surge current is measured at 25oC ambient using a 1/2 square wave or equivalent sine
wave pulse 1/120 second duration superimposed on IZT.
4: Voltage measurements tobe performed 90 seconds after application of DC current.
M C C
5: RoHs Compliant already and Pb-free sticker on reel , box & carton indicated RoHs compliant .
MCC Zener Test Surge Maximum
Part Number Voltage Current Current Regulator
Current
VZ @IZT IZT ZZT @IZT ZZK @IZK IZK IR @VRVRIRIZM
Volts mA OHMS OHMS mA uA Volts mA mA
1N4728 3.3 76 10 400 1 100 1 1380 276
1N4729 3.6 69 10 400 1 100 1 1260 252
1N4730 3.9 64 9 400 1 50 1 1190 234
1N4731 4.3 58 9 400 1 10 1 1070 217
1N4732 4.7 53 8 500 1 10 1 970 193
1N4733 5.1 49 7 550 1 10 1 890 178
1N4734 5.6 45 5 600 1 10 2 810 162
1N4735 6.2 41 2 700 1 10 3 730 146
1N4736 6.8 37 3.5 700 1 10 4 660 133
1N4737 7.5 34 4 700 0.5 10 5 605 121
1N4738 8.2 31 4.5 700 0.5 10 6 550 110
1N4739 9.1 28 5 700 0.5 10 7 500 100
1N4740 10 25 7 700 0.25 10 7.6 454 91
1N4741 11 23 8 700 0.25 5 8.4 414 83
1N4742 12 21 9 700 0.25 5 9.1 380 76
1N4743 13 19 10 700 0.25 5 9.9 344 69
1N4744 15 17 14 700 0.25 5 11.4 304 61
1N4745 16 15.5 16 700 0.25 5 12.2 285 57
1N4746 18 14 20 750 0.25 5 13.7 250 50
1N4747 20 12.5 22 750 0.25 5 15.2 225 45
1N4748 22 11.5 23 750 0.25 5 16.7 205 41
1N4749 24 10.5 25 750 0.25 5 18.2 190 38
1N4750 27 9.5 35 750 0.25 5 20.6 170 34
1N4751 30 8.5 40 1000 0.25 5 22.8 150 30
1N4752 33 7.5 45 1000 0.25 5 25.1 135 27
1N4753 36 7 50 1000 0.25 5 27.4 125 25
1N4754 39 6.5 60 1000 0.25 5 29.7 115 23
1N4755 43 6 70 1500 0.25 5 32.7 110 22
1N4756 47 5.5 80 1500 0.25 5 35.8 95 19
1N4757 51 5 95 1500 0.25 5 38.8 90 18
1N4758 56 4.5 110 2000 0.25 5 42.6 80 16
1N4759 62 4 125 2000 0.25 5 47.1 70 14
1N4760 68 3.7 150 2000 0.25 5 51.7 65 13
1N4761 75 3.3 175 2000 0.25 5 56 60 12
Leakage Current
Maximum ReverseMaximum Dynamic Impedance
Electrical Characteristics(TA= 25°C unless otherwise noted). Maximum VF= 1.2V at IF= 200mA
1N4728 thru 1N4761
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1N4728 thru 1N4761
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Figure 3. Effect of Zener Current
on Zener Impedance Figure 4. Effect of Zener Voltage
on Zener Impedance
1000
500
200
100
50
20
10
5
2
10.1 0.2 0.5 1 2 5 10 20 50 100
IZ, ZENER CURRENT (mA)
ZZ, DYNAMIC IMPEDANCE (OHMS)
1000
700
500
200
100
70
50
20
10
7
5
2
11 2 100
VZ, ZENER CURRENT (mA)
3 5 7 10 20 30 50 70
ZZ, DYNAMIC IMPEDANCE (OHMS)
TJ = 25
°
C
iZ(rms) = 0.1 IZ(dc)
f = 60 Hz
6.2 V
27 V
VZ = 2.7 V
47 V
TJ = 25
°
C
iZ(rms) = 0.1 IZ(dc)
f = 60 Hz
20 mA
5 mA
IZ = 1 mA
Figure 1. Typical Thermal Resistance
versus Lead Length Figure 2. Effect of Zener Current
175
150
125
100
75
50
25
00 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
L, LEAD LENGTH TO HEAT SINK (INCHES)
θ
JL , JUNCTION-TO-LEAD THERMAL RESISTANCE (mV/
°
C/W)
θ
VZ, TEMPERATURE COEFFICIENT (mV/
°
C)
+6
+4
+2
0
–2
–4 3 4 5 6 7 8
VZ, ZENER VOLTAGE (VOLTS)
VZ@ IZ
TA= 25
°
C
20 mA
0.01 mA
1 mA
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
NOTE: CHANGES IN ZENER CURRENT DO NOT
NOTE: EFFECT TEMPERATURE COEFFICIENTS
Figure 5. Maximum Surge Power
100
70
50
30
20
10
7
5
3
2
10.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100 200 500 1000
PW, PULSE WIDTH (ms)
This graph represents 90 percentile data points.
For worst case design characteristics, multiply surge power by 2/3.
Ppk, PEAK SURGE POWER (WATTS)
11 V–100 V NONREPETITIVE
3.3 V–10 V NONREPETITIVE
5% DUTY CYCLE
10% DUTY CYCLE
20% DUTY CYCLE
RECTANGULAR
WAVEFORM
TJ= 25
°
C PRIOR TO
INITIAL PULSE
Revision: 12 2008/07/30
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products are represented on our website, harmless against all damages.
***APPLICATIONS DISCLAIMER***
***IMPORTANT NOTICE***
Aerospace or Military Applications.
Products offer by Micro Commercial Components Corp .are not intended for use in Medical,
Micro Commercial Components Corp .reserves the right to make changes without further notice to any
product herein to make corrections, modifications , enhancements , improvements , or other changes .
Micro Commercial Components Corp .does not assume any liability arising out of the application or
use of any product described herein; neither does it convey any license under its patent rights ,nor
the rights of others . The user of products in such applications shall assume all risks of such use
and will agree to hold Micro Commercial Components Corp .and all the companies whose
Revision: 12 2008/07/30
Ordering Information
Device Packing
(Part Number)-TP Tape&Reel; 5Kpcs/Reel
(Part Number)-AP Ammo Packing;2.5Kpcs/AmmoBox
(Part Number)-BP Bulk;1Kpcs/Box
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