1N4954US Datasheet, PDF (1/4 Pages) Microsemi Corporation – VOIDLESS-HERMETICALLY-SEALED Surface Mount 5 WATT GLASS ZENER

SCOTTSDALE DIVISION
1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
DESCRIPTION
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
and surface mount packages.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
APPEARANCE
“E” Package
(or “D-5B”)
FEATURES
• Popular JEDEC registered series
• Voidless hermetically sealed glass package
• Triple-layer passivation
• Internal “Category I” Metallurgical bonds for
1N4954US thru 1N4996US, and “Category III” for
1N6632US thru 1N6637US as well as 1N5968US
thru 1N5959US
• JAN, JANTX, JANTXV, and JANS available per MIL-
PRF-19500/356
• Axial-leaded equivalents (see separate data sheet for
1N4954 thru 1N4996, 1N6632 thru 1N6637 and
1N5968 thru 1N5969)
APPLICATIONS / BENEFITS
• Regulates voltage over a broad operating current and
temperature range
• Extensive selection from 3.3 to 390 V
• Standard voltage tolerances are plus/minus 5% with
no suffix
• Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively
• Extremely robust construction
• Nonsensitive to ESD per MIL-STD-750 Method 1020
• Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
• Operating Temperature: -65^oC to +175^oC.
• Storage Temperature: -65^oC to +175^oC.
• Power Dissipation: 5 Watts @ T_EC = 125^oC and
derate linearly at 0.1 W/ ^oC above T_EC = 125^oC to
zero at 175 ^oC
• Thermal Resistance: 7^oC/W junction to end cap for
1N4954US thru 1N4996US and 10^oC/W for
1N6632US thru 1N6637US as well as 1N5968US
thru 1N5969US
• Thermal Impedance at 10 ms: 1.8^oC/W for
1N4954US thru 1N4996US, and 3.0^oC/W for both
the 1N6632US thru 1N6637US & 1N5968US thru
1N5969US
• Forward Voltage: 1.50 V at 1.0 A
MECHANICAL AND PACKAGING
• CASE: Hermetically sealed voidless hard glass with
Tungsten slugs
• TERMINATIONS: End caps are solid Silver (Ag) with
Tin/Lead (Sn/Pb) finish
• MARKING: None
• POLARITY: Cathode indicated by band
• Tape & Reel option: Standard per EIA-481-B
• Weight: 539 mg
Copyright  2004
11-22-2004 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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