1N4728A through 1N4753A
Silicon Epitaxial Planar Zener Diodes for Stabilized Power Supply
ADE-208-136C (Z)
Rev.3
Sep. 2000
Features
• Glass package DO-4 1 structure en sures high reliability.
• Wide spectrum from 3.3V through 36V of zener voltage provide flexible application.
Ordering Information
Type No. Mark Package Code
1N4728A through 1N4753A Type No. DO-41
Outline
1. Cathode
2. Anode
Cathode band
Type No.
12
Absolute Maximum Ratings
(Ta = 25°C)
Item Symbol Value Unit
Power dissipation Pd *11.0 W
Junction temperature Tj 200 °C
Storage temperature Tstg −65 to +200 °C
Note: 1. See Fig.3
1N4728A through 1N4753A
Rev.3, Sep. 2000, page 2 of 6
Electrical Characteristics
(Ta = 25°C)
VZ (V) *1IR (µ
µµ
µA) ZZT (Ω
ΩΩ
Ω)Z
ZK (Ω
ΩΩ
Ω)I
RSM (mA)*2
Test
Condition Test
Condition Test
Condition Test
Condition
Type No. Max IZ (mA) Max VR (V) Max IZT (mA) Max IZK (mA) Max
1N4728A 3.3 ± 5 (%) 76 100 1.0 10 76 400 1.0 1380
1N4729A 3.6 ± 5 (%) 69 100 1.0 10 69 400 1.0 1260
1N4730A 3.9 ± 5 (%) 64 50 1 .0 9 64 400 1.0 1190
1N4731A 4.3 ± 5 (%) 58 10 1 .0 9 58 400 1.0 1070
1N4732A 4.7 ± 5 (%) 53 10 1.0 8 53 500 1.0 970
1N4733A 5.1 ± 5 (%) 49 10 1.0 7 49 550 1.0 890
1N4734A 5.6 ± 5 (%) 45 10 2.0 5 45 600 1.0 810
1N4735A 6.2 ± 5 (%) 41 10 3.0 2 41 700 1.0 730
1N4736A 6.8 ± 5 (%) 37 10 4.0 3.5 37 700 1.0 660
1N4737A 7.5 ± 5 (%) 34 10 5.0 4 34 700 0.5 605
1N4738A 8.2 ± 5 (%) 31 10 6.0 4.5 31 700 0.5 550
1N4739A 9.1 ± 5 (%) 28 10 7.0 5 28 700 0.5 500
1N4740A 10 ± 5 (%) 25 10 7.6 7 25 700 0.25 454
1N4741A 11 ± 5 (%) 23 5 8.4 8 23 700 0.25 414
1N4742A 12 ± 5 (%) 21 5 9.1 9 21 700 0.25 380
1N4743A 13 ± 5 (%) 19 5 9.9 10 19 700 0.25 344
1N4744A 15 ± 5 (%) 17 5 11.4 14 17 700 0.25 304
1N4745A 16 ± 5 (%) 15.5 5 12.2 16 15.5 750 0.25 285
1N4746A 18 ± 5 (%) 14.0 5 13.7 20 14.0 750 0.25 250
1N4747A 20 ± 5 (%) 12.5 5 15.2 22 12.5 750 0.25 225
1N4748A 22 ± 5 (%) 11.5 5 16.7 23 11.5 750 0.25 205
1N4749A 24 ± 5 (%) 10.5 5 18.2 25 10.5 750 0.25 190
1N4750A 27 ± 5 (%) 9.5 5 20.6 35 9.5 750 0.25 170
1N4751A 30 ± 5 (%) 8.5 5 22.8 40 8.5 1000 0.25 150
1N4752A 33 ± 5 (%) 7.5 5 25.1 45 7.5 1000 0.25 135
1N4753A 36 ± 5 (%) 7.0 5 27.4 50 7.0 1000 0.25 125
Notes: 1. Tested with DC
2. t = 1/120 sec reverse direction 1pulse
1N4728A through 1N4753A
Rev.3, Sep. 2000, page 3 of 6
Main Characteristic
100
80
60
40
20
0
Zener Current I Z(mA)
Zener Voltage VZ(V)
10 20 30 40
1N4730A
1N4730A
1N4732A
1N4734A
1N4736A
1N4738A
1N4739A
1N4740A
1N4746A
1N4747A
1N4748A
1N4749A
1N4728A
1N4750A
1N4751A
1N4752A
1N4753A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
010
20 30 40
Zener Voltage V (V)
Zener Voltage
Temperature Coefficient (%/°C)
10
−10
−20
−30
−40
−50
0.10
Z
Zener Voltage
Temperature Coefficient (mV/°C)
z
γ
0.08
0.06
0.04
0.02
0
−0.02
−0.04
−0.06
−0.08
−0.1
20
30
40
50
z
γ
%/°C
mV/°C
1.0
0.8
0.6
0.4
0.2
200
150100
50
0
Ambient Temperature Ta (°C)
Power Dissipation P (W)
0
d
10mm land
10 mm
or
20mm
Printed circuit board
100 180 1.6t mm
Material: Glass epoxy
××
3/8inch
20mm land
Fig.1 Zener current Vs. Zener voltage
Fig.3 Power Dissipation Vs. Ambient Temperature
Fig.2 Temperature Coefficient Vs. Zener voltage
1N4728A through 1N4753A
Rev.3, Sep. 2000, page 4 of 6
10 10 10 1.0 10 10 10
10
10
10
1.0
Time t (s)
Transient Thermal Impedance Z (°C/W)
th
3
2
−1
−2−3
2
3
Ta = 25°C
nonrepetitive
t
PRSM
Time t (s) 10 10 1.0
10 10
1.0
10
10
10
10
10
Nonrepetitive Surge Reverses Power P (W)
RSM
4
3
2
−5−4−3−2−1
Fig.4 Surge Reverse Power Ratings
Fig.5 Transient Thermal Impedance
1N4730A
1N4734A
1N4740A
1N4730A
1N4734A
1N4740A
1N4728A through 1N4753A
Rev.3, Sep. 2000, page 5 of 6
Package Dimensions
Hitachi Code
JEDEC
EIAJ
Mass
(reference value)
DO-41
Conforms
Conforms
0.38 g
Unit: mm
26.0 Min 5.2 Max 26.0 Min
3.0
0.8
φ
φ
1N4728A through 1N4753A
Rev.3, Sep. 2000, page 6 of 6
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4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
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