1SMA4728 Datasheet PDF - Pan Jit International

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1SMA4728
Pan Jit International

Part Number 1SMA4728
Description (1SMA4728 - 1SMA4764) SURFACE MOUNT SILICON ZENER DIODE
Page 5 Pages


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DATA SHEET
1SMA4728~1SMA4764
SURFACE MOUNT SILICON ZENER DIODE
VOLTAGE 3.3 to 100 Volts POWER 1.0 Watts
FEATURES
• For surface mounted applications in order to optimize board space.
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• Low profile package
• Built-in strain relief
• Glass passivated junction
• Low inductance
• Typical IR less than 5.0µA above 11V
• Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
• High temperature soldering : 260°C /10 seconds at terminals
• Pb free product are available : 99% Sn above can meet Rohs
environment substance directive request
SMA/DO-214AC
Unit: inch (mm)
.181(4.60)
.157(4.00)
.012(.305)
.006(.152)
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)
.008(.203)
.002(.051)
.208(5.28)
.188(4.80)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Param eter
Pwak Pulse PowerD issipation on TA=50OC (Notes A)
D erate above 50OC
Peak Forward Surge C urrent8.3m s single halfsine-wave
superim posed on rated load (JED EC m ethod)
O perating Junction and Storage Tem perature Range
Sym bol
PD
IFS M
TJ,TS TG
Value
1.0
6.67
10
-55 to + 150
U nits
W atts
m W /OC
Am ps
OC
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



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Part Number
VZ @ IZT
Nom. V Min. V Max. V
1.0 Watt ZENER Diodes -- continued
1SMA4728 3.3 3.1 3.5
1SMA4729
3.6 3.4 3.8
1SMA4730
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1SMA4731
3.9 3.7 4.1
4.3 4.1 4.5
1SMA4732
4.7 4.5 4.9
1SMA4733
5.1 4.8 5.4
1SMA4734
5.6 5.3 5.9
1SMA4735
6.2 5.9 6.5
1SMA4736
6.8 6.5 7.1
1SMA4737
7.5 7.1 7.9
1SMA4738
8.2 7.8 8.6
1SAM4739
9.1 8.6 9.6
1SMA4740
10.0
9.5 10.5
1SMA4741
11.0
10.5 11.6
1SMA4742
12.0
11.4 12.6
1SMA4743
13.0
12.4 13.7
1SMA4744
15.0
14.3 15.8
1SMA4745
16.0
15.2 16.8
1SMA4746
18.0
17.1 18.9
1SMA4747
20.0 19.0 21.0
1SMA4748
22.0
20.9 23.1
1SMA4749
24.0
22.8 25.2
1SMA4750
27.0
25.7 28.4
1SMA4751
30.0
28.5 31.5
1SMA4752
33.0
31.4 34.7
1SMA4753
36.0
34.2 37.8
1SMA4754
39.0
37.1
41
1SMA4755
43.0
40.9 45.2
1SMA4756
47.0
44.7 49.4
1SMA4757
51.0
48.5 53.6
1SMA4758
56.0
53.2 58.8
1SMA4759
62.0
58.9 65.1
1SMA4760
68.0
64.6 71.4
1SMA4761
75.0
71.3 78.8
1SMA4762
82.0
77.9 86.1
1SMA4763
91.0
86.5 95.6
1SMA4764
100 95.0 105
Maximum Zener Impedance
ZZT @ IZT
O mA
ZZK @ IZK
O mA
10.0 76.0 400 1.00
10.0 69.0 400 1.00
9.0 64.0 400 1.00
9.0 58.0 400 1.00
8.0 53.0 500 1.00
7.0 49.0 550 1.00
5.0 45.0 600 1.00
2.0 41.0 700 1.00
3.5 37.0 700 1.00
4.0 34.0 700 0.50
4.5 31.0 700 0.50
5.0 28.0 700 0.50
7.0 25.0 700 0.25
8.0 23.0 700 0.25
9.0 21.0 700 0.25
10.0 19.0 700 0.25
14.0 17.0 700 0.25
16.0 15.5 700 0.25
20.0 14.0 750 0.25
22.0 12.5 750 0.25
23.0 11.5 750 0.25
25.0 10.5 750 0.25
35.0 9.5 750 0.25
40.0 8.5 1000 0.25
45.0 7.5 1000 0.25
50.0 7.0 1000 0.25
60.0 6.5 1000 0.25
70.0 6.0 1500 0.25
80.0 5.5 1500 0.25
95.0 5.0 1500 0.25
110 4.5 2000 0.25
125 4.0 2000 0.25
150 3.7 2000 0.25
175 3.3 2000 0.25
200 3.0 3000 0.25
250 2.8 3000 0.25
350 2.5 3000 0.25
Maximum
Leakage
Current
IR @VR
uA V
100 1.0
100 1.0
50 1.0
10 1.0
10 1.0
10 1.0
10 2.0
10 3.0
10 4.0
10 5.0
10 6.0
10 7.0
10 7.6
0.1 8.4
0.1 9.1
0.1 9.9
0.1 11.4
0.1 12.2
0.1 13.7
0.1 15.2
0.1 16.7
0.1 18.2
0.1 20.6
0.1 22.8
0.1 25.1
0.1 27.4
0.1 29.7
0.1 32.7
0.1 35.8
0.1 38.8
0.1 42.6
0.1 47.1
0.1 51.7
0.1 56.0
0.1 62.2
0.1 69.2
0.1 76.0
Marking Code
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
Package
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



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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
the lead temperature (TL) at 30 oC + 1 oC, 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
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RATING AND CHARACTERISTICS CURVES
1.0
0.75
0.5
L=LEAD LENGTH
TO HEAT SINK
0.25
0
0 20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERATURE (OC)
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
(-55OC TO +150OC TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
STAD-JAN.27.2005
PAGE . 3



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FIGURE.3TYPICAL THERMAL RESISTANCE versus LEAD LENGTH
FIGURE.4 EFFECT OF ZENER CURRENT
FIGURE.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



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