PAGE . 1
1SMA4728~1SMA4757
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
• L
ead free in compliance with EU RoHS 2.0
• Green molding compound as per IEC 61249 standard
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 ounce
s, 0.0679 grams
SURFACE MOUNT SILICON ZENER DIODE
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
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%.
1 Watt
VOLTAGE
3.3 to 51 Volt
POWER
1
2
Cathode
Anode
D. Mounted on minimum recommended pad layout.
Parameter Symbol
Value Units
Peak Pulse Power Dissipation on T =50
O
C (Notes A)
A
Derate above 50
O
C
PD
1.0 W atts
Peak Forward Surge Current 8.3ms single half sine-wave superimposed
on rated load
IFSM
10 Amps
Typical Thermal Resistance (Notes D)
R
θJA
150
o
C/W
Operating Junction and Storage Temperature Range
TJ,TSTG
-55 to + 150
O
C
M
ay 15,2020 1SMA4728_SERIES-REV.10
PAGE . 2
1SMA4728~1SMA4757
Part Number
No mina l Z e ner V o lt a g e
M a xi mum Z e ne r I mpedance
Max Reverse
Leakage Current
Ma rk ing
Code
V
Z
@ I
ZT
ZZ T @ I ZT
ZZ K @ I ZK
I R @VR
No m. V
Min. V
Max. V
Ω
mA
Ω
mA
uA Ma x.
V
1SMA4728
3.3
3.1
3.5
10
76
400
1
100
1
728B
1SMA4730
3.9
3.7
4.1
9
64
400
1
50
1
730B
1SMA4731
4.3
4.1
4.5
9
58
400
1
10
1
731B
1SMA4732
4.7
4.5
4.9
8
53
500
1
10
1
732B
1SMA4733
5.1
4.8
5.4
7
49
550
1
10
1
733B
1SMA4734
5.6
5.3
5.9
5
45
600
1
10
2
734B
1SMA4735
6.2
5.9
6.5
2
41
700
1
10
3
735B
1SMA4736
6.8
6.46
7.14
3.5
37
700
1
5
4
736B
1SMA4737
7.5
7.13
7.88
4
34
700
0.5
5
5
737B
1SMA4738
8.2
7.79
8.61
4.5
31
700
0.5
5
6
738B
1SMA4739
9.1
8.65
9.56
5
28
700
0.5
0.5
7
739B
1SMA4740
10
9.5
10.5
7
25
700
0.25
0.5
7.6
740B
1SMA4741
11
10.45
11.55
8
23
700
0.25
0.1
8.4
741B
1SMA4742
12
11.4
12.6
9
21
700
0.25
0.1
9.1
742B
1SMA4743
13
12.35
13.65
10
19
700
0.25
0.1
9.9
743B
1SMA4744
15
14.25
15.75
14
17
700
0.25
0.1
11.4
744B
1SMA4745
16
15.2
16.8
16
15.5
700
0.25
0.1
12.2
745B
1SMA4746
18
17.1
18.9
20
14
750
0.25
0.1
13.7
746B
1SMA4747
20
19
21
22
12.5
750
0.25
0.1
15.2
747B
1SMA4748
22
20.9
23.1
23
11.5
750
0.25
0.1
16.7
748B
1SMA4749
24
22.8
25.2
25
10.5
750
0.25
0.1
18.2
749B
1SMA4750
27
25.65
28.35
35
9.5
750
0.25
0.1
20.6
750B
1SMA4751
30
28.5
31.5
40
8.5
1000
0.25
0.1
22.8
751B
1SMA4752
33
31.35
34.65
45
7.5
1000
0.25
0.1
25.1
752B
1SMA4753
36
34.2
37.8
50
7
1000
0.25
0.1
27.4
753B
1SMA4754
39
37.05
40.95
60
6.5
1000
0.25
0.1
29.7
754B
1SMA4755
43
40.85
45.15
70
6
1500
0.25
0.1
32.7
755B
1SMA4756
47
44.65
49.35
80
5.5
1500
0.25
0.1
35.8
756B
1SMA4757
51
48.45
53.55
95
5
1500
0.25
0.1
38.8
757B
May 15,2
020 1SMA4728_SERIES-REV.10