Number: DB-070
Jun.2016/ H Page 1
TAK CHEONG
®
Former
Licensed
P
roduct from
ON Semiconductor a trademark
of Semiconductor Components
Industries,LLC
1 Watt DO-41 Hermetically
Sealed Glass Zener Voltage
Regulators
Maximum Ratings
Rating Symbol Value Units
Maximum Steady State Power Dissipation
@TL≤50℃, Lead Length = 3/8”
Derate Above 50℃
PD
1
6.67
W
mW/℃
Operating and Storage
Temperature Range TJ, Tstg -65 to +200
°C
Specification Features:
§ Zener Voltage Range = 3.3V to 75V
§ ESD Rating of Class 3 (>6 KV) per Human Body Model
§ DO-41 Package (DO-204AL)
§ Double Slug Type Construction
§ Former Metallurgical Bonded Construction
§ Oxide Passivated Die
§ RoHS Compliant and Halogen Free
§ Solder Hot Dip Tin (Sn) Lead Finish
Specification Features:
Case : Double slug type, hermetically sealed glass
Finish : All external surfaces are corrosion resistant and leads are readily solderable
Polarity : Cathode indicated by polarity band
Mounting: Any
1N4728A
through
1N476
1
A
S
eries
Cathode
Anode
L = Logo
1N47xxA = Device Code
L
1N
47
xx
A
Number: DB-070
Jun.2016/ H Page 2
TAK CHEONG
®
Former
Licensed
P
roduct from
ON Semiconductor a trademark
of Semiconductor Components
Industries,LLC
ELECTRICAL CHARACTERISTICS (TA = 25℃ unless otherwise noted.)
Device
(Note 1.) Device
Marking
Zener Voltage (Note 2 & 3.) Zener Impedance (Note 4.) Leakage Current
VZ (Volts) @IZT ZZT @IZT
ZZK @IZK IR @ VR
Min Nom Max (mA) (Ω) (Ω) (mA)
(uA Max)
(Volts)
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
3.135
3.420
3.705
4.085
4.465
3.3
3.6
3.9
4.3
4.7
3.465
3.780
4.095
4.515
4.935
76
69
64
58
53
10
10
9
9
8
400
400
400
400
500
1
1
1
1
1
100
100
50
10
10
1
1
1
1
1
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
4.845
5.320
5.890
6.460
7.125
5.1
5.6
6.2
6.8
7.5
5.355
5.880
6.510
7.140
7.875
49
45
41
37
34
7
5
2
3.5
4
550
600
700
700
700
1
1
1
1
0.5
10
10
10
10
10
1
2
3
4
5
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
7.790
8.645
9.500
10.45
11.40
8.2
9.1
10
11
12
8.610
9.555
10.50
11.55
12.60
31
28
25
23
21
4.5
5
7
8
9
700
700
700
700
700
0.5
0.5
0.25
0.25
0.25
10
10
10
5
5
6
7
7.6
8.4
9.1
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
12.35
14.25
15.20
17.10
19.00
13
15
16
18
20
13.65
15.75
16.80
18.90
21.00
19
17
15.5
14
12.5
10
14
16
20
22
700
700
700
750
750
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
9.9
11.4
12.2
13.7
15.2
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
20.90
22.80
25.65
28.50
31.35
22
24
27
30
33
23.10
25.20
28.35
31.50
34.65
11.5
10.5
9.5
8.5
7.5
23
25
35
40
45
750
750
750
1000
1000
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
16.7
18.2
20.6
22.8
25.1
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
34.20
37.05
40.85
44.65
48.45
36
39
43
47
51
37.80
40.95
45.15
49.35
53.55
7
6.5
6
5.5
5
50
60
70
80
95
1000
1000
1500
1500
1500
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
27.4
29.7
32.7
35.8
38.8
1N4758A
1N4759A
1N4760A
1N4761A
1N4758A
1N4759A
1N4760A
1N4761A
53.20
58.90
64.60
71.25
56
62
68
75
58.80
65.10
71.40
78.75
4.5
4
3.7
3.3
110
125
150
175
2000
2000
2000
2000
0.25
0.25
0.25
0.25
5
5
5
5
42.6
47.1
51.7
56.0
VF = 1.2V Max @IF = 200mA for 30V below types, VF = 2.0V Max @IF = 200mA for 30~56V types, and VF = 3.0V Max @IF = 200mA for 60V
above types
1. TOLERANCE AND TYPE NUMBER DESIGNATION (VZ)
The type numbers listed have a standard tolerance on the nominal zener voltage of ± 5%.
2. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage, for detailed information on price, availability and delivery, contact
you nearest Tak Cheong representative.
3. ZENER VOLTAGE (VZ) MEASUREMENT
The zener voltage (VZ) is tested under pulse condition. The measured VZ is guaranteed to be within specification with device junction in
thermal equilibrium.
Number: DB-070
Jun.2016/ H Page 3
TAK CHEONG
®
Former
Licensed
P
roduct from
ON Semiconductor a trademark
of Semiconductor Components
Industries,LLC
4. ZENER IMPEDANCE (ZZ) DERIVATION
The zener impedance is derived from the 60 cycle 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.
Package Outline
Case Outline
DIM
DO-41
Millimeters Inches
Min Max Min Max
A 0.68 0.81 0.027 0.032
B 3.70 4.25 0.146 0.167
C 25.40 --- 1.000 ---
D 2.10 2.60 0.083 0.102
