1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
VOIDLESS-HERMETICALLY-SEALED
5 WATT GLASS ZENER DIODES
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This 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
surface-mount packages (see separate data sheet for 1N4954US thru
1N4996US, 1N5968US thru 1N5969US, and 1N6632US thru 1N6637US).
Microsemi also offers numerous other Zener products to meet higher and
lower power ratings in both thru-hole and surface mount packages.
“E” Package
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
Extremely robust construction
Triple-layer passivation
Internal “Category I” Metallurgical bonds for 1N4954
thru 1N4996, and “Category III” for 1N6632 thru
1N6637 as well as 1N5968 thru 1N5959
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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
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Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively
Flexible axial-lead mounting terminals
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JAN, JANTX, JANTXV, and JANS available per MIL-
PRF-19500/356
Nonsensitive to ESD per MIL-STD-750 Method 1020
Surface mount equivalents also available in a square
end-cap MELF configuration with “US” suffix (see
separate data sheet for 1N4954US thru 1N4996US,
1N6632US thru 1N6637US and 1N5968US thru
1N5969US
Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Operating Temperature: -65oC to +175oC.
Storage Temperature: -65oC to +175oC.
Power Dissipation: 5 Watts @ TA = 25oC
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CASE: Hermetically sealed voidless hard glass with
Tungsten slugs
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TERMINATIONS: Axial-leads are Tin/Lead (Sn/Pb)
over Copper except for JANS with solid Silver (Ag) and
no finish
MARKING: Body painted and part number, etc.
POLARITY: Cathode indicated by band
Tape & Reel option: Standard per EIA-296
Weight: 750 mg
Thermal Resistance: 22oC/W junction to lead at 3/8
inch (10 mm) from body for 1N4954 thru 1N4996 and
30oC/W for 1N6632 thru 1N6637, 1N5968 thru
1N5969
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Thermal Impedance at 10 ms: 1.8oC/W for 1N4954
thru 1N4996, and 3.0oC/W for both the 1N6632 thru
1N6637 & 1N5968 thru 1N5969
Forward Voltage: 1.50 V at 1.0 A
Copyright 2005
Microsemi
Page 1
2-4-2005 REV C
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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