Formosa MS
DATA SHEET
DL4728A~DL4764A
SURFACE MOUNT ZENER DIODES
VOLTAGE
FEATURES
• Low profile package
• Built-in strain relief
• Low inductance
3.3 to 100 Volts
POWER
1.0 Watts
MELF/DL-41
Unit : inch (mm)
• Case: Molded Glass MELF / DL-41
• Terminals: Solderable per MIL-STD-202E, Method 208
• Polarity: See Diagram Below
• Approx. Weight: 0.008 grams
• Mounting Position: Any
• Packing information
T/R - 5K per 13" paper Reel
.020(0.5)
.012(0.3)
.216(5.5)
.201(5.1)
.020(0.5)
.012(0.3)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Power Dissipation at Tamb = 25
Junction Temperature
Storage Temperature Range
O
Symbol
Value
1*
200
-65 to + 200
C
P
TOT
T
J
T
STG
.110(2.8)
MECHANICAL DATA
Units
W
O
O
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
Parameter
Thermal Resi stance Juncti on to Ambi ent Ai r
Forward Voltage at IF = 200mA
Symbol
Min.
--
--
Typ.
Max.
170*
1.2
RthA
VF
--
--
.102(2.6)DIA.
C
C
Uni ts
K/W
V
*Vali d provi ded that leads at a di stance of 10mm from case are kept at ambi ent temperature.
PAGE . 1
Formosa MS
M a x i m u m Ze n e r Vo l t a g e
Part Number
N o m. V
V
Z
@ I
ZT
Min . V
Ma x . V
Ω
M a x i m u m Ze n e r I m p e d a n c e
Z
ZT
@ I
ZT
mA
Ω
Z
ZK
@ I
ZK
mA
M a x i m u m L eakag e
Current
I
R
@ V
R
uA
V
1.0 w att Zener Diodes (Glass Sealed Envelope)
D L4728A
D L4729A
D L4730A
D L4731A
D L4732A
D L4733A
D L4734A
D L4735A
D L4736A
D L4737A
D L4738A
D L4739A
D L4740A
D L4741A
D L4742A
D L4743A
D L4744A
D L4745A
D L4746A
D L4747A
D L4748A
D L4749A
D L4750A
D L4751A
D L4752A
D L4753A
D L4754A
D L4755A
D L4756A
D L4757A
D L4758A
D L4759A
D L4760A
D L4761A
D L4762A
D L4763A
D L4764A
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
62.0
68.0
75.0
82.0
91.0
100.0
3.1
3.4
3.7
4.1
4.5
4.8
5.3
5.9
6.5
7.1
7.8
8.6
9.5
10.5
11.4
12.4
14.3
15.2
17.1
19.0
20.9
22.8
25.7
28.5
31.4
34.2
37.1
40.9
44.7
48.5
53.2
58.9
64.6
71.3
77.9
86.5
95.0
3.5
3.8
4.1
4.5
4.9
5.4
5.9
6.5
7.1
7.9
8.6
9.6
10.5
11.6
12.6
13.7
15.8
16.8
18.9
21.0
23.1
25.2
28.4
31.5
34.7
37.8
41.0
45.2
49.4
53.6
58.8
65.1
71.4
78.8
86.1
95.6
105.0
10.0
10.0
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
10.0
14.0
16.0
20.0
22.0
23.0
25.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
95.0
110.0
125.0
150.0
175.0
200.0
250.0
350.0
76.0
69.0
64.0
58.0
53.0
49.0
45.0
41.0
37.0
34.0
31.0
28.0
25.0
23.0
21.0
19.0
17.0
15.5
14.0
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
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
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.50
0.50
0.50
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
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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
PAGE . 2
Formosa MS
RATING AND CHARACTERISTIC CURVES
POWER DISSIPATION, Watts
1.0
0.8
0.6
0.4
0.2
0
50
100
150
200
O
250
AMBIENT TEMPERATURE, C
FIG. 1 POWER DERATING CURVE
Vz (V)
Iz (mA)
100
80
60
40
20
0
5
10
15
20
25
30
4742
4744
4748
4747
4741
4749
4750
4735
4733
4732
4739
4731
4728
Fig.2 BREAKDOWN CHARACTERISTICS
PAGE . 3
Microcontroller MCU
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