1SMB5945

Manufacturer Part Number1SMB5945
DescriptionZener Diodes 68 Volt 3 Watt 5%
ManufacturerTaiwan Semiconductor
1SMB5945 datasheet
 

Specifications of 1SMB5945

Zener Voltage68 VVoltage Tolerance5 %
Zener Current22 mAPower Dissipation550 mW
Maximum Reverse Leakage Current1 uAMaximum Zener Impedance120 Ohms
Mounting StyleSMD/SMTPackage / CaseSMB
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther namesR4
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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
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 2026
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
DC Power Dissipation at T
=75
L
measure at Zero Lead Length
Derate above 75
o
C
DC Power Dissipation @ T
=25
A
o
Derate above 25
C
Thermal Resistance from Junction-to-Lead
Thermal Resistance from Junction-to-Ambient
Operating and Storage Temperature Range
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not normal operating conditions)
and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be attached.
1SMB5926 - 1SMB5956
3.0 Watts Surface Mount Silicon Zener Diode
.083(2.10)
.077(1.95)
.103(2.61)
.078(1.99)
Dimensions in inches and (millimeters)
Symbol
o
C,
P
D
o
C
P
D
R
θ
JL
R
θ
JA
T
, T
J
STG
- 594 -
SMB/DO-214AA
.147(3.73)
.137(3.48)
.187(4.75)
.167(4.25)
.012(.31)
.006(.15)
.012(.31)
.006(.15)
.056(1.41)
.008(.20)
.035(0.90)
.004(.10)
.209(5.30)
.201(5.10)
Value
Units
3.0
Watts
40
mW/
550
mW
4.4
mW/
o
C/W
25
o
C/W
226
o
-65 to + 150
C
Version: B08
o
C
o
C

1SMB5945 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 High temperature soldering guaranteed: o 260 seconds at terminals Plastic package has Underwriters Laboratory Flammability ...

  • Page 2

    ... 1SMB5936 936B 30 1SMB5937 937B 33 1SMB5938 938B 36 1SMB5939 939B 39 1SMB5940 940B 43 1SMB5941 941B 47 1SMB5942 942B 51 1SMB5943 943B 56 1SMB5944 944B 62 1SMB5945 945B 68 1SMB5946 946B 75 1SMB5947 947B 82 1SMB5948 948B 91 1SMB5949 949B 100 1SMB5950 950B 110 1SMB5951 951B 120 1SMB5952 952B 130 1SMB5953 953B 150 ...

  • Page 3

    RATINGS AND CHARACTERISTIC CURVES (1SMB5926 THRU 1SMB5956) FIG.1- STEADY STATE POWER DERATING 100 o T, TEMPERATURE( C) FIG.3- ZENER VOLTAGE - TO 12 VOLTAGES 10 ...

  • Page 4

    RATINGS AND CHARACTERISTIC CURVES (1SMB5926 THRU 1SMB5956) FIG.7- EFFECT OF ZENER VOLTAGE 200 I (dc) = 1mA Z 100 10mA 20mA ZENER CURRENT (mA) ...