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  Microsemi Electronic Components Datasheet  

SMBJ5345B Datasheet

Surface Mount Silicon 5Watt Zener Diodes

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SMBJ5333B thru SMBJ5388B
Available
Surface Mount Silicon 5 Watt
Zener Diodes
DESCRIPTION
The SMBJ5333B - SMBJ5388B series of surface mount 5.0 watt Zeners provides a selection
from 3.3 to 200 volts with different tolerances as identified by suffix letter on the part number.
It is equivalent to the JEDEC registered 1N5333 thru 1N5388B with identical electrical
characteristics and testing. These parts are available with either Sn/Pb plating or a RoHS
compliant matte-tin finish. This J-bend design (SMBJ) in the DO-214AA allows for greater PC
board mounting density. These plastic encapsulated Zeners have a moisture classification of
“Level 1” with no dry pack required. Microsemi also offers numerous other Zener products to
meet higher and lower power applications.
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
Surface mount equivalent to JEDEC registered 1N5333 thru 1N5388 series.
Ideal for high-density and low-profile mounting.
Zener voltage available 3.3 V to 200 V.
Plus/minus 10%, 5% and 2% voltage tolerances are available.
(See part nomenclature block.)
RoHS compliant versions available.
DO-214AA
J-Bend Package
NOTE: All SMB series are
equivalent to prior SMS package
identifications.
Also available in:
DO-215AA Package
(Gull-wing surface mount)
SMBG5333 – SMBG5388
T-18 Package
(axial-leaded)
1N5333 – 1N5388
APPLICATIONS / BENEFITS
Regulates voltage over broad operating current and temperature ranges.
Wide selection from 3.3 to 200 V.
Non-sensitive to ESD per MIL-STD-750 method 1020.
Withstands high surge stresses.
Minimal changes of voltage versus current.
High specified maximum current (IZM) with adequate heat sinking.
Moisture classification is “Level 1” per IPC/JEDEC J-STD-020B with no dry pack required.
MAXIMUM RATINGS
Parameters/Test Conditions
Junction and Storage Temperature
Thermal Resistance Junction-to-Lead
Thermal Resistance Junction-to-Ambient (1)
Off-State Power Dissipation @ 25 oC (2)
Forward Voltage @ 1.0 A
Solder Temperature @ 10 s
Symbol
TJ and TSTG
R ӨJL
R ӨJA
PD
VF
TSP
Value
-65 to +150
25
90
5.0
1.2
260
Unit
oC
oC/W
oC/W
W
V
oC
Notes: 1. When mounted on FR4 PC board (1oz Cu) with recommended footprint (see pad layout).
2. 5 watts at T L < 25 oC, or 1.38 watts at T A = 25 ºC when mounted on FR4 PC board with recommended
footprint (also see Figure 1).
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
T4-LDS-0246-2, Rev. 1 (120180)
©2012 Microsemi Corporation
Page 1 of 5


  Microsemi Electronic Components Datasheet  

SMBJ5345B Datasheet

Surface Mount Silicon 5Watt Zener Diodes

No Preview Available !

SMBJ5333B thru SMBJ5388B
MECHANICAL and PACKAGING
CASE: Void-free transfer molded thermosetting epoxy body meeting UL94V-0.
TERMINALS: C-bend (modified J-bend) tin-lead or RoHS compliant annealed matte-tin plating solderable per MIL-STD-750,
method 2026.
MARKING: Part number without SMBx prefix (e.g. 5334B, 5334Be3, MX5348C, 5376A, etc.).
POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end.
TAPE & REEL option: Standard per EIA-481-1-A with 12 mm tape (add “TR” suffix to part number). Consult factory for
quantities.
WEIGHT: 0.1 grams.
See Package Dimensions on last page.
Surface Mount Package
J-Bend Lead Frame
JEDEC type number
(See Electrical
Characteristics table)
PART NOMENCLATURE
SMB J 5334 A (e3)
RoHS Compliance
e3 = RoHS Compliant
Blank = non-RoHS Compliant
Breakdown Voltage Tolerance
A = +/- 10%
B = +/- 5%
C = +/- 2%
Symbol
IR
IZ, IZT, IZK
I ZM
I ZSM
VR
VZ
ZZT or Z ZK
SYMBOLS & DEFINITIONS
Definition
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form.
Reverse Voltage: The reverse voltage dc value, no alternating component.
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
specified rms current modulation (typically 10% of IZT or IZK) and superimposed on IZT or IZK respectively.
T4-LDS-0246-2, Rev. 1 (120180)
©2012 Microsemi Corporation
Page 2 of 5


Part Number SMBJ5345B
Description Surface Mount Silicon 5Watt Zener Diodes
Maker Microsemi
Total Page 5 Pages
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