1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This surface mount Zener Voltage Regulator series is military qualified to
MIL-PRF-19500/356 and is ideal for high-reliability applications where a
failure cannot be tolerated. These industry-recognized 5 Watt Zener
Voltage Regulators are hermetically sealed with voidless-glass construction
using an internal metallurgical bond. It includes Zener selections from 3.3
to 390 volts in standard 5% tolerances as well as tighter tolerances
identified by different suffix letters on the part number. They are also
available in axial-leaded packages for thru hole mounting by deleting the
“US” suffix (see separate data sheet for 1N4954 thru 1N4996, 1N5968 thru
1N5969, and 1N6632 thru 1N6637). Microsemi also offers numerous other
Zener products to meet higher and lower power ratings in both thru-hole
“E” Package
(or “D-5B”)
and surface mount packages.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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Popular JEDEC registered series
Voidless hermetically sealed glass package
Triple-layer passivation
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Regulates voltage over a broad operating current and
temperature range
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Extensive selection from 3.3 to 390 V
Standard voltage tolerances are plus/minus 5% with
no suffix
Internal “Category I” Metallurgical bonds for
1N4954US thru 1N4996US, and “Category III” for
1N6632US thru 1N6637US as well as 1N5968US
thru 1N5959US
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Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively
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JAN, JANTX, JANTXV, and JANS available per MIL-
PRF-19500/356
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Extremely robust construction
Nonsensitive to ESD per MIL-STD-750 Method 1020
Axial-leaded equivalents (see separate data sheet for
1N4954 thru 1N4996, 1N6632 thru 1N6637 and
1N5968 thru 1N5969)
Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
Operating (TJ) Temperature: -65oC to +175oC.
Storage Temperature: -65oC to +175 oC.
MECHANICAL AND PACKAGING
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CASE: Hermetically sealed voidless hard glass with
Tungsten slugs
Power Dissipation: 5 Watts @ TEC = 140oC for
1N4954US thru 1N4996US or @ TEC = 125oC for
both the 1N6632US thru 1N6637US & 1N5968US
thru 1N5969US. Derate linearly above these
temperatures to zero at 175oC.
Thermal Resistance: 7oC/W junction to end cap for
1N4954US thru 1N4996US and 10oC/W for
1N6632US thru 1N6637US as well as 1N5968US
thru 1N5969US
Thermal Impedance at 10 ms: 1.8oC/W for
1N4954US thru 1N4996US, and 3.0oC/W for both
the 1N6632US thru 1N6637US & 1N5968US thru
1N5969US
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TERMINATIONS: End caps are Copper with Tin/Lead
(Sn/Pb) finish. Note: Previous inventory had solid
Silver end caps with Tin/Lead (Sn/Pb) finish.
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MARKING: None
POLARITY: Cathode indicated by band
Tape & Reel option: Standard per EIA-481-B
Weight: 539 mg
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Forward Voltage: 1.50 V at 1.0 A
Copyright © 2010
3-29-2010 REV E; SD44A.pdf
Microsemi
Page 1
Scottsdale Division
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