1SMA4728~1SMA4757
SURFACE MOUNT SILICON ZENERDIODE
VOLTAGE
FEATURES
• For surface mounted applications in order to optimize board space
• Low inductance
• Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
• High temperature soldering : 260°C /10 seconds at terminals
• Lead free in compliance with EU RoHS 2.0
• Green molding compound as per IEC 61249 standard
3.3
to 51 Volt
POWER
1 Watt
MECHANICAL DATA
•
•
•
•
•
Case: JEDEC DO-214AC,Molded plastic over passivated junction.
Terminals: Solder plated,solderable per MIL-STD-750, Method 2026
Polarity: Color band denotes cathode end
Standard Packaging: 12mm tape (EIA-481)
Weight: 0.0023 ounces, 0.0679 grams
1
2
Cathode
Anode
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Peak Pulse Power Dissipation on T
A
=50
O
C (Notes A)
Derate above 50
O
C
Peak Forward Surge Current 8.3ms single half sine-wave superimposed
on rated load
Operating Junction and Storage Temperature Range
Symbol
Value
1.0
10
-55 to + 150
Units
W atts
Amps
O
P
D
I
FSM
T
J
,T
STG
C
NOTES:
A. Mounted on 5mm
2
(0.013mm thick) land areas.
B. Measured on 8.3ms, and single half sine-wave or equivalent square wave, duty cycle=4 pulses per minute maximum.
C. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener
voltage of ± 5%.
April 25,2018-REV.09
PAGE . 1
1SMA4728~1SMA4757
Max Reverse
Leakage Current
I
R
@V
R
uA Ma x.
100
50
10
10
10
10
10
5
5
5
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
V
1
1
1
1
1
2
3
4
5
6
7
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
728B
730B
731B
732B
733B
734B
735B
736B
737B
738B
739B
740B
741B
742B
743B
744B
745B
746B
747B
748B
749B
750B
751B
752B
753B
754B
755B
756B
757B
1
1
1
1
1
1
1
1
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
mA
No mina l Z e ner V o lt a g e
Part Number
No m. V
1SMA4728
1SMA4730
1SMA4731
1SMA4732
1SMA4733
1SMA4734
1SMA4735
1SMA4736
1SMA4737
1SMA4738
1SMA4739
1SMA4740
1SMA4741
1SMA4742
1SMA4743
1SMA4744
1SMA4745
1SMA4746
1SMA4747
1SMA4748
1SMA4749
1SMA4750
1SMA4751
1SMA4752
1SMA4753
1SMA4754
1SMA4755
1SMA4756
1SMA4757
3.3
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
V
Z
@ I
ZT
Min. V
3.1
3.7
4.1
4.5
4.8
5.3
5.9
6.46
7.13
7.79
8.65
9.5
10.45
11.4
12.35
14.25
15.2
17.1
19
20.9
22.8
25.65
28.5
31.35
34.2
37.05
40.85
44.65
48.45
M ax. V
3.5
4.1
4.5
4.9
5.4
5.9
6.5
7.14
7.88
8.61
9.56
10.5
11.55
12.6
13.65
15.75
16.8
18.9
21
23.1
25.2
28.35
31.5
34.65
37.8
40.95
45.15
49.35
53.55
Ω
10
9
9
8
7
5
2
3.5
4
4.5
5
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
M a ximum Z e ne r I mpedance
Z
ZT
@ I
ZT
mA
76
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
6.5
6
5.5
5
Ω
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
Z
ZK
@ I
ZK
Ma rk ing
Code
April 25,2018-REV.09
PAGE . 2
1SMA4728~1SMA4757
RATING AND CHARACTERISTICS CURVES
P
D
, MAXIMUM POWER DISSIPATION (WATTS)
1.0
L=LEAD LENGTH
TO HEAT SINK
0.75
0.5
0.25
0
0
20
40
60
80 1 0 0
120
140 160 180
O
200
T
L
, LEAD TEMPERATURE ( C)
FIGURE.1 POWER TEMPERATURE DERATING CURVE
b-RAMGE FPRIMOTSTP 12 TO 51 VOLTS
April 25,2018-REV.09
PAGE .
3
1SMA4728~1SMA4757
April 25,2018-REV.09
PAGE .
4
1SMA4728~1SMA4757
April 25,2018-REV.09
PAGE .
5
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