DL4728A THRU DL4764A
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
A
B
C
MECHANICAL DATA
•
Case: Molded Glass LL-41
•
Terminals: Axial leads, solderable per MIL-STD-750,
Method 2026 guaranteed
•
Polarity: Color band denotes positive end
•
Mounting position:Any
•
Weight: 0.25 gram
MELF
Dim
A
B
C
Min
4. 80
2. 40
0. 46
Max
5. 20
2. 67
0. 60
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
1)
W
175
-65 to +200
℃
℃
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
DL4728A THRU DL4764A
1W EPITAXIAL ZENER DIODE
Nominal
Zener
Voltage (1)
V
Z
@ I
ZT
V
DL4728A
DL4729A
DL4730A
DL4731A
DL4732A
DL4733A
DL4734A
DL4735A
DL4736A
DL4737A
DL4738A
DL4739A
DL4740A
DL4741A
DL4742A
DL4743A
DL4744A
DL4745A
DL4746A
DL4747A
DL4748A
DL4749A
DL4750A
DL4751A
DL4752A
DL4753A
DL4754A
DL4755A
DL4756A
DL4757A
DL4758A
DL4759A
DL4760A
DL4761A
DL4762A
DL4763A
DL4764A
Notes:
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
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
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
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
Maximum Reverse
Leakage Current
I
R
µA
100
100
50
10
10
10
10
10
10
10
10
10
10
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
@ 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
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
Maximum
Zener
Current
I
ZM
mA
276
252
234
217
193
178
162
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
14
13
12
11
10
9.0
Maximum Zener Impedance (2)
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
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
Type
Number
1. Measured under thermal equilibrium and DC (I
ZT
) test conditions.
2. 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.
DL4728A THRU DL4764A
RATINGS AND CHARACTERISTIC CURVES
FIG.1 -- BREAKDOWN CHARACTERISTICS
Vz (V)
Iz (mA)
100
80
60
40
20
0
5
10
15
20
25
30
4750
4749
4748
4747
4744
4742
4741
4739
4735
4733
4732
4731
FIG.2 -- ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE
P O W E R D I S S I PAT I O N , Wa t t s
4728
1.0
0.8
0.6
0.4
0.2
0
50
100
150
200
250
AMBIENT TEMPERATURE,
O
C
Talking
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