1SMA4746

Manufacturer Part Number1SMA4746
DescriptionZener Diodes 18V
ManufacturerTaiwan Semiconductor
1SMA4746 datasheet
 

Specifications of 1SMA4746

Zener Voltage18 VVoltage Tolerance5 %
Power Dissipation1 WMaximum Reverse Leakage Current5 uA
Maximum Zener Impedance20 OhmsMaximum Operating Temperature+ 150 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 55 C
Package / CaseDO-214ACLead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesR2  
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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
less than 5.0uA above 7.5V
R
High temperature soldering guaranteed:
o
260
C / 10 seconds at terminals
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
Mechanical Data
Case: Molded plastic over passivated junction
Terminals: Pure tin plated lead free,
solderable per MIL-STD-750, Method 2025
Polarity:Color Band denotes positive end
(cathode)
Standard packaging: 12mm tape (EIA-481)
Weight: 0.002 ounces, 0.064 gram
Maximum Ratings and Electrical Characteristics
o
Rating at 25
C ambient temperature unless otherwise specified.
Type Number
Power Dissipation, R
<30 K/W, T
thJA
Power Dissipation, R
<100 K/W, T
thJA
Non Repetitive Peak Surge Power Dissipation(Note 1)
Non Repetitive Peak Forward Surge Current, 8.3 ms
Single Half Sine-wave Superimposed on Rated Load
(JEDEC method)
Operating and Storage Temperature Range
Notes:
1. Non Repetitive Peak surge P
1SMA4737 - 1SMA200Z
1.25 Watts Surface Mount Silicon Zener Diode
SMA/DO-214AC
Dimensions in inches and (millimeters)
Symbol
o
P
=60
C
amb
D
o
P
=25
C
amb
D
P
ZSM
I
FSM
T
, T
J
STG
Test Conditions: tp=100uS sq. pulse, Tj=25
D
- 586 -
Value
Units
3.0
Watts
1.25
Watts
60
Watts
10.0
Amps
o
-55 to + 150
C
o
prior to surge.
C
Version: C08

1SMA4746 Summary of contents

  • Page 1

    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 less than 5.0uA above 7.5V R High temperature soldering guaranteed: o 260 seconds ...

  • Page 2

    ... (Notes 2 & 3) 1SMA4737 737A 7.5 1SMA4738 738A 8.2 1SMA4739 739A 9.1 1SMA4740 740A 10 1SMA4741 741A 11 1SMA4742 742A 12 1SMA4743 743A 13 1SMA4744 744A 15 1SMA4745 745A 16 1SMA4746 746A 18 1SMA4747 747A 20 1SMA4748 748A 22 1SMA4749 749A 24 1SMA4750 750A 27 1SMA4751 751A 30 1SMA4752 752A 33 1SMA4753 753A 36 1SMA4754 754A 39 1SMA4755 ...

  • Page 3

    RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z) FIG.1- POWER TEMPERATURE DERATING CURVE 1.25 1.0 0.75 0.50 0. 100 120 140 AMBIENT TEMPERATURE( C) FIG.3- EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE 1000 T = ...

  • Page 4

    RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z) FIG.6- TYPICAL CAPACITANCE versus Vz 400 300 200 100 10 8 50% OF BREAKDOWN BIAS FORWARD VOLTAGE (VOLTS) Z FIG.8- TEMPERATURE COEFFICIENTS b-RANGE FOR UNITS 11 TO 100 ...