DATA SHEET
1SMA4728~1SMA4764
SURFACE MOUNT SILICON ZENER DIODE
VOLTAGE
FEATURES
• For surface mounted applications in order to optimize board space.
• Low profile package
• Built-in strain relief
• Glass passivated junction
• Low inductance
• Typical I
R
less than 5.0µA above 11V
• Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
• High temperature soldering : 260°C /10 seconds at terminals
.096(2.44)
.062(1.60)
.047(1.20)
.114(2.90)
.098(2.50)
3.3
to
100
Volts
POWER
1.0 Watts
SMA/DO-214AC
Unit: inch (mm)
.181(4.60)
.157(4.00)
environment substance directive request
MECHANICALDATA
Case: JEDEC DO-214AC,Molded plastic over passivated junction.
Terminals: Solder plated,solderable per MIL-STD-202G, Method 208
Polarity: Color band denotes positive end (cathode)
Standard Packaging:12mm tape (EIA-481)
Weight: 0.002 ounce, 0.064 gram
.060(1.52)
.030(0.76)
.078(2.00)
• Pb free product are available : 99% Sn above can meet Rohs
.012(.305)
.006(.152)
.008(.203)
.002(.051)
.208(5.28)
.188(4.80)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
P ar m et r
a
e
N e
P w ak P ul e P ow erD i si aton on TA =50
O
C ( ot s A )
s
s p i
D er t above 50
O
C
ae
P eak For ar S ur e C urent8. m s si gl hal si e- ave
w d
g
r
3
n e
f n w
superm posed on r t d l ad ( E D E C m et od)
i
ae o
J
h
O per tng Juncton and S t r ge Tem per t r R ange
ai
i
oa
aue
S ym bol
Val e
u
1.
0
6. 7
6
10
- 5 t + 150
5 o
U nis
t
W ats
t
m W /
O
C
A m ps
O
P
D
I
FSM
T
J
,
STG
T
C
NOTES:
A. Mounted on 5.0mm2 (.013mm thick) land areas.
B. Measured on8.3ms, 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%.
STAD-JAN.27.2005
PAGE . 1
Part Number
Nom. V
V
Z
@ I
ZT
Maximum Zener Impedance
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
O
mA
Maximum
Leakage
Current
I
R
@V
R
uA
V
Marking Code
Package
Min. V
Max. V
O
mA
1.0 Watt ZENER Diodes -- continued
1SMA4728
1SMA4729
1SMA4730
1SMA4731
1SMA4732
1SMA4733
1SMA4734
1SMA4735
1SMA4736
1SMA4737
1SMA4738
1SAM4739
1SMA4740
1SMA4741
1SMA4742
1SMA4743
1SMA4744
1SMA4745
1SMA4746
1SMA4747
1SMA4748
1SMA4749
1SMA4750
1SMA4751
1SMA4752
1SMA4753
1SMA4754
1SMA4755
1SMA4756
1SMA4757
1SMA4758
1SMA4759
1SMA4760
1SMA4761
1SMA4762
1SMA4763
1SMA4764
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
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
45.2
49.4
53.6
58.8
65.1
71.4
78.8
86.1
95.6
105
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
125
150
175
200
250
350
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
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
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
728B
729B
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
758B
759B
760B
761B
762B
763B
764B
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
SMA
STD-JAN.27.2005
PAGE . 2
NOTE:
1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener
voltage of + 5%
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
B. Matched sets.
3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining
o
o
the lead temperature (T
L
) at 30 C + 1 C, from the diode body.
4. Zener Impedance (Zz) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when
an ac current having an rms value equal to 10% of the dc zener current (Izt or Izk) is superimposed on Izt or Izk.
5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak,
non-repetitive, reverse surge current of 1/2
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
100
120
140 160 180
O
200
T
L
, LEAD TEMPERATURE ( C)
FIGURE.1 POWER TEMPERATURE DERATING CURVE
a.RANGE FOR UNITS TO 12 VOLTS
b.RANGE FOR UNITS 12 TO 100 VOLTS
FIGURE.2 TEMPERATURE COEFICIENTS
(-55
O
C TO +150
O
C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
STAD-JAN.27.2005
PAGE . 3
FIGURE.3TYPICAL THERMAL RESISTANCE
versus LEAD LENGTH
FIGURE.4 EFFECT OF ZENER CURRENT
FIGU R E.5 MAXIMUM SURGE POWER
FIGURE.6 EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
FIGURE.7 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE
STAD-JAN.27.2005
PAGE . 4
Vz, ZENER VOLTAGE (VOLTS)
FIGURE.9 TYPICAL CAPACITANCE versus Vz
FIGURE.8 TYPICAL LEAKAGE CURRENT
m
FIGURE.10 TYPICAL FORWARD CHARACTERISTICS
STAD-JAN.27.2005
PAGE . 5
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