UPM
1SMA4741~1SMA4754
SURFACE MOUNT SILICON ZENER DIODE
Voltage Range 11-39 Volts Power 1.0mWatts
Features
* For surface mounted applications in order to optimize board space. * Low profile package * Built-in strain relief * Glass passivated junction * Low inductance * Typical IR less than 5.0 above 11V * Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
* High temperature soldering : 260°C /10 seconds at terminals
* Both normal and Pb free product are available : Normal : 80~95% Sn, 5~20% Pb
Pb free: 98.5% Sn above
.062(1.60) .047(1.20)
SMA/DO-214AC
.114(2.90) .098(2.50)
.181(4.60) .157(4.00)
.012(.305) .006(.152)
.096(2.44) .078(2.00)
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 positive end (cathode) Standard Packaging:12mm tape (EIA-481) Weight: 0.002 ounce, 0.064 gram
Maximum Ratings and Electrical Characteristics
Ratings at 25°C ambient temperature unless otherwise specified.
.060(1.52) .030(0.76)
.008(.203) .002(.051)
.208(5.28) .188(4.80)
Dimensions in millimeters
Parameter
Pwak Pulse Power Dissipation on TA=50OC (Notes A) Derate above 50OC
Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load (JEDEC method)
Operating Junction and Storage Temperature Range
Symbol PD IFSM
TJ,TS TG
Value 1.0 6.67
10
-55 to + 150
Unit s W atts mW/ OC
Amps
OC
NOTES:
1. Mounted on 5.0mm2 (.013mm thick) land areas. 2. Measured on8.3ms, and single half sine-wave or equivalent square wave ,duty cycle=4 pulses per minute maximum. 3. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener
voltage of ± 5%.
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E -mail:
[email protected]
UPM
1SMA4741~1SMA4754
SURFACE MOUNT SILICON ZENER DIODE
Voltage Range 11-39 Volts Power 1.0mWatts
Part Number 1.0 Watt ZENER
Nominal Zener Voltage
Nom. V
VZ @ IZT Min. V
Max. V
1SMA4741
11 10.5 11.6
1SMA4742
12 11.4 12.6
1SMA4743
13 12.4 13.7
1SMA4744
15 14.3 15.8
1SMA4745
16 15.2 16.8
1SMA4746
18 17.1 18.9
1SMA4747
20 19.0 21.0
1SMA4748
22 20.9 23.1
1SMA4749
24 22.8 25.2
1SMA4750
27 25.7 28.4
1SMA4751
30 28.5 31.5
1SMA4752
33 31.4 34.7
1SMA4753
36 34.2 37.8
1SMA4754
39 37.1 41.0
Maxi mum Zener Impedance
ZZT @ IZT Ohms
IZT mA
ZZK @ IZK Ohms
IZK mA
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
Leakage Current
IR @ VR uA V
Ma rk i ng Code
0.1 8.4 741B 0.1 9.1 742B 0.1 9.9 743B 0.1 11.4 744B 0.1 12.2 745B 0.1 13.7 746B 0.1 15.2 747B 0.1 16.7 748B 0.1 18.2 749B 0.1 20.6 750B 0.1 22.8 751B 0.1 25.1 752B 0.1 27.4 753B 0.1 29.7 754B
PD, MAXIMUM POWER DISSIPATION (WATTS)
Rating And Characteristic 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)
Fig.1 Power Temperature Derating Curve
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UPM
1SMA4741~1SMA4754
SURFACE MOUNT SILICON ZENER DIODE
Voltage Range 11-39 Volts Power 1.0mWatts
Fig.2 Temperature Coeficients (-55oC To +150oC Temperature Range; 90% Of The Units Are In The Ranges Indicated.)
Fig.3 Typical Thermal Resistance Versus Lead Length
Fig.4 Effect Of Zener Current
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Fig.5 Maximum Surge Power
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UPM
1SMA4741~1SMA4754
SURFACE MOUNT SILICON ZENER DIODE
Voltage Range 11-39 Volts Power 1.0mWatts
Fig.6 Effect Of Zener Current On Zener Impedance
Fig.7 Effect Of Zener Voltage On Zener Impedance
Vz, ZENER VOLTAGE (VOLTS)
Fig.9 Typical Capacitance Versus Vz
m
Fig.8 Typical Leakage Current
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Fig.10 Typical Forward Characteristics
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