1N4728A THRU 1N4764A
1W EPITAXIAL ZENER DIODE
FEATURES
•
Low profile package
•
Built-in strain relief
•
Low inductance
•
High temperature soldering : 260°C /10 seconds at terminals
•
Glass package has Underwriters Laboratory Flammability
Classification
•
In compliance with EU RoHS 2002/95/EC directives
DO-41(GLASS)
Φ
0.8± 0.1
•
Case: Molded Glass DO-41G
•
Terminals: Axial leads, solderable per MIL-STD-750,
Method 2026 guaranteed
•
Polarity: Color band denotes positive end
•
Mounting position:Any
•
Weight: 0.012 ounce, 0.336 gram
Φ
2.5 ± 0.2
All Dimensions in mm
ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(T
A
=25℃)
Symbols
Zener current see table "Characteristics"
Power dissipation at TA=50℃
Junction temperature
Storage temperature range
Value
Units
P
tot
T
J
T
STG
1
25.4 ± 1
4.5 ± 0.2
MECHANICAL DATA
25.4 ± 1
1)
W
175
-65 to +175
℃
℃
1)Valid provided that a distance of 8mm from case are kept at ambient temperature
ELECTRCAL CHARACTERISTICS(T
A
=25℃)
Symbols
Thermal resistance junction to ambient
Forward voltage at IF=200mA
Min
Typ
Max
170
1.2
1)
Units
R
thA
V
F
℃
/W
V
1) Valid provided that a distance at 8mm from case are kept at ambient temperature
1N4728A THRU 1N4764A
1W EPITAXIAL ZENER DIODE
Electrical Characteristics
Type
Number
(Note 1)
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
1N4763A
1N4764A
Nominal Zener
Voltage (Note 2)
V
Z
@ I
ZT
(V)
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
@T
A
=25°C unless otherwise specified
Max Surge
Current
8.3ms
I
ZS
(mA)
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
Test Current
I
ZT
(mA)
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
Maximum Zener Impedance (Note 3)
Z
ZT
@ I
ZT
( )
10
10
9.0
9.0
8.0
7.0
5.0
2.0
3.5
4.0
4.5
5.0
7.0
8.0
9.0
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
Z
ZK
@ I
ZK
( )
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
I
ZK
(mA)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Leakage Current
I
R
(µA)
100
100
50
10
10
10
10
10
5.0
5.0
5.0
0.5
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
@ V
R
(V)
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
Note: 1. Type numbers listed have standard tolerance on the nominal zener voltage of ±5%.
2. Measured under thermal equilibrium and DC (I
ZT
) test conditions.
3. The Zener impedance is derived from the 60Hz 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.
1N4728A THRU 1N4764A
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- BREAKDOWN CHARACTERISTICS
100
mA
5
10
15
20
25
30 V
I
Z
80
60
40
20
0
FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE
W
1.0
1N4728
1N4733
1N4735
1N4742
1N4744
1N4747
1N4731
1N4732
1N4739
1N4741
1N4748
1N4749
1N4750
V
Z
0.8
P
tot
0.6
0.4
0.2
0
0
100
T
amb
200℃
嵌入式系统
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