VOIDLESS-HERMETICALLY-SEALED
5 WATT GLASS ZENER DIODES
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
Copyright
2005
2-4-2005 REV C
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S C O T T S D A L E D I V I S I O N
1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
1N4954 t
h
ru 1
N
4996
1N5968 t
h
ru 1
N
5969
1N6632 t
h
ru 1
N
6637
DESCRIPTION
APPEARANCE
T
his 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.
IMPORTANT: For the most current data, consult MICROSEMI's website:
http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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
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
MECHANICAL AND PACKAGING
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
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
"E" Package
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
1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
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1N5968 t
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5969
1N6632 t
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N
6637
ELECTRICAL CHARACTERISTICS @ 25
o
C
MAXIMUM ZENER
IMPEDANCE
MAXIMUM REVERSE
LEAKAGE CURRENT
VOLTAGE
NOMINAL
ZENER
VOLTAGE
V
Z
@
I
ZT
TEST
CURRENT
I
ZT
Z
Z
@
I
ZT
Z
ZK
*
@
I
ZK
=1mA
VOLTAGE
REGULATION
(Note 1)
V
Z
I
R
V
R
MAXIMUM
TEMPERATURE
COEFF.
VZ
@
I
ZT
MAXIMUM
CONTINUOUS
CURRENT
I
ZM
SURGE
CURRENT
I
ZSM
TYPE*
VOLTS mA OHMS
OHMS VOLTS
A
VOLTS %/
o
C mA
AMPS
1N6632
1N6633
1N6634
1N6635
1N6636
1N6637
3.3
3.6
3.9
4.3
4.7
5.1
380
350
320
290
260
240
3.0
2.5
2.0
2.0
2.0
1.5
500
500
500
500
450
400
0.90
0.80
0.75
0.70
0.60
0.50
300
250
175
25
20
5
1.0
1.0
1.0
1.0
1.0
1.0
-.075
-.070
-.060
-.050
+/-.025
+/-.030
1440
1320
1220
1100
1010
930
20.0
18.7
17.6
16.4
15.3
14.4
1N5968
1N5969
1N4954
1N4955
1N4956
5.6
6.2
6.8
7.5
8.2
220
220
175
175
150
1.0
1.0
1.0
1.5
1.5
400
1000
1000
800
600
0.4
0.5
0.7
0.7
0.7
5000
1000
150
100
50
4.28
4.74
5.2
5.7
6.2
.04
.04
.05
.06
.06
865
765
700
630
580
20
20
29.3
26.4
24
1N4957
1N4958
1N4959
1N4960
1N4961
9.1
10.0
11
12
13
150
125
125
100
100
2.0
2.0
2.5
2.5
3.0
400
125
130
140
145
0.7
0.8
0.8
0.8
0.9
25
25
10
10
10
6.9
7.6
8.4
9.1
9.9
.06
.07
.07
.07
.08
520
475
430
395
365
22
20
19
18
16
1N4962
1N4963
1N4964
1N4965
1N4966
15
16
18
20
22
75
75
65
65
50
3.5
3.5
4.0
4.5
5.0
150
155
160
165
170
1.0
1.1
1.2
1.5
1.8
5
5
5
2
2
11.4
12.2
13.7
15.2
16.7
.08
.08
.085
.085
.085
315
294
264
237
216
12
10
9.0
8.0
7.0
1N4967
1N4968
1N4969
1N4970
1N4971
24
27
30
33
36
50
50
40
40
30
5.0
6.0
8
10
11
175
180
190
200
220
2.0
2.0
2.5
2.8
3.0
2
2
2
2
2
18.2
20.6
22.8
25.1
27.4
.090
.090
.090
.095
.095
198
176
158
144
132
6.5
6.0
5.5
5.0
4.5
1N4972
1N4973
1N4974
1N4975
1N4976
39
43
47
51
56
30
30
25
25
20
14
20
25
27
35
230
240
250
270
320
3.0
3.3
3.5
4.0
4.4
2
2
2
2
2
29.7
32.7
35.8
38.8
42.6
.095
.095
.095
.095
.095
122
110
100
92
84
4.0
3.5
3.2
3.0
2.8
1N4977
1N4978
1N4979
1N4980
1N4981
62
68
75
82
91
20
20
20
15
15
42
50
55
80
90
400
500
620
720
760
5.0
5.5
6.0
6.6
7.5
2
2
2
2
2
47.1
51.7
56.0
62.2
69.2
.100
.100
.100
.100
.100
76
70
63.0
58.0
52.5
2.5
2.2
2.0
1.8
1.6
1N4982
1N4983
1N4984
1N4985
1N4986
100
110
120
130
150
12
12
10
10
8
110
125
170
190
330
800
1000
1150
1250
1500
8.0
9.0
10
11
13
2
2
2
2
2
76.0
83.6
91.2
98.8
114.0
.100
.100
.100
.105
.105
47.5
43.0
39.5
36.6
31.6
1.4
1.2
1.00
0.80
0.75
1N4987
1N4988
1N4989
1N4990
1N4991
160
180
200
220
240
8
5
5
5
5
350
450
500
550
650
1650
1750
1850
2000
2050
14
16
18
19
22
2
2
2
2
2
121.6
136.8
152
167
182
.105
.110
.110
.115
.115
29.4
26.4
23.6
21.6
19.8
0.70
0.60
0.50
0.50
0.40
1N4992
1N4993
1N4994
1N4995
1N4996
270
300
330
360
390
5
4
4
3
3
800
950
1175
1400
1800
2100
2150
2200
2300
2500
25
28
32
35
40
2
2
2
2
2
206
228
251
274
297
.120
.120
.120
.120
.120
17.5
15.6
14.4
13.0
12.0
0.35
0.30
0.25
0.22
0.20
*I
ZK
= 5 mA for 1N5968
NOTE 1: Maximum voltage change
V
Z
between 10% of I
ZM
and 50%
of I
ZM
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
Copyright
2005
2-4-2005 REV C
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
1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
W
W
W
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Mi
c
r
o
s
e
m
i
.
C
O
M
1N4954 t
h
ru 1
N
4996
1N5968 t
h
ru 1
N
5969
1N6632 t
h
ru 1
N
6637
SYMBOLS & DEFINITIONS
Symbol Definition
V
Z
Zener Voltage: The zener voltage the device will exhibit at a specified current (I
Z
) in its breakdown region.
I
Z
, I
ZT
, I
ZK
Regulator Current: The dc regulator current (I
Z
), at a specified test point (I
ZT
), or near breakdown knee (I
ZK
).
Z
ZT
or Z
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.
V
F
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
I
R
Maximum Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and
temperature.
I
ZM
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
I
ZSM
Maximum Zener Surge Current: The nonrepetitive peak value of zener surge current at a specified wave form.
GRAPHS
FIGURE 1
FIGURE 2
POWER DISSIPATION vs. LEAD
SURGE POWER vs.
TEMPERATURE DERATING CURVE
SURGE DURATION
FIGURE 3
TYPICAL ZENER IMPEDANCE vs.
ZENER CURRENT
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
Copyright
2005
2-4-2005 REV C
VOIDLESS-HERMETICALLY-SEALED
5 WATT GLASS ZENER DIODES
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 4
Copyright
2005
2-4-2005 REV C
W
W
W
.
Mi
c
r
o
s
e
m
i
.
C
O
M
S C O T T S D A L E D I V I S I O N
1N4954 thru 1N4996, 1N5968 thru 1N5969, and
1N6632 thru 1N6637
1N4954 t
h
ru 1
N
4996
1N5968 t
h
ru 1
N
5969
1N6632 t
h
ru 1
N
6637
PACKAGE DIMENSIONS
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