1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
SCOTTSDALE DIVISION
VOIDLESS-HERMETICALLY-SEALED
5 WATT GLASS ZENER DIODES
DESCRIPTION
T
his Zener Voltage Regulator series is military qualified to MIL-PRF-
APPEARANCE
WWW .
Microsemi
.C
OM
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.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
“E” Package
FEATURES
•
•
•
•
•
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
JAN, JANTX, JANTXV, and JANS available per MIL-
PRF-19500/356
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
•
•
•
•
•
•
•
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
Flexible axial-lead mounting terminals
Nonsensitive to ESD per MIL-STD-750 Method 1020
Inherently radiation hard as described in Microsemi
MicroNote 050
•
•
MAXIMUM RATINGS
•
•
•
•
Operating Temperature: -65
o
C to +175
o
C.
Storage Temperature: -65
o
C to +175
o
C.
Power Dissipation: 5 Watts @ T
A
= 25
o
C
Thermal Resistance: 22
o
C/W junction to lead at 3/8
inch (10 mm) from body for 1N4954 thru 1N4996 and
30
o
C/W for 1N6632 thru 1N6637, 1N5968 thru
1N5969
Thermal Impedance at 10 ms: 1.8
o
C/W for 1N4954
thru 1N4996, and 3.0
o
C/W for both the 1N6632 thru
1N6637 & 1N5968 thru 1N5969
Forward Voltage: 1.50 V at 1.0 A
•
•
MECHANICAL AND PACKAGING
CASE: Hermetically sealed voidless hard glass with
Tungsten slugs
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
•
•
•
•
•
1N4954 thru 1N4996
1N5968 thru 1N5969
1N6632 thru 1N6637
•
Copyright
2005
2-4-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
SCOTTSDALE DIVISION
VOIDLESS-HERMETICALLY-SEALED
5 WATT GLASS ZENER DIODES
Symbol
V
Z
I
Z
, I
ZT
, I
ZK
Z
ZT
or Z
ZK
V
F
I
R
I
ZM
I
ZSM
SYMBOLS & DEFINITIONS
Definition
Zener Voltage: The zener voltage the device will exhibit at a specified current (I
Z
) in its breakdown region.
Regulator Current: The dc regulator current (I
Z
), at a specified test point (I
ZT
), or near breakdown knee (I
ZK
).
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 I
ZT
or I
ZK
) and superimposed on I
ZT
or I
ZK
respectively.
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
Maximum Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and
temperature.
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
Maximum Zener Surge Current: The nonrepetitive peak value of zener surge current at a specified wave form.
WWW .
Microsemi
.C
OM
GRAPHS
FIGURE 1
POWER DISSIPATION vs. LEAD
TEMPERATURE DERATING CURVE
FIGURE 2
SURGE POWER vs.
SURGE DURATION
1N4954 thru 1N4996
1N5968 thru 1N5969
1N6632 thru 1N6637
FIGURE 3
TYPICAL ZENER IMPEDANCE vs.
ZENER CURRENT
Copyright
2005
2-4-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
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