VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
SCOTTSDALE DIVISION
1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
WWW.Microsemi .COM 1N4954US thru 1N4996US
1N5968US thru 1N5969US
1N6632US thru 1N6637US
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
and surface mount packages.
“E” Package
(or “D-5B”)
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
• 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)
• 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 MECHANICAL AND PACKAGING
• Operating Temperature: -65oC to +175oC.
• Storage Temperature: -65oC to +175oC.
• Power Dissipation: 5 Watts @ TEC = 125oC and
derate linearly at 0.1 W/ oC above TEC = 125oC to
zero at 175 oC
• 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
• Forward Voltage: 1.50 V at 1.0 A
• 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
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
Copyright 2004
11-22-2004 REV B
VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
SCOTTSDALE DIVISION
1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
WWW.Microsemi .COM 1N4954US thru 1N4996US
1N5968US thru 1N5969US
1N6632US thru 1N6637US
ELECTRICAL CHARACTERISTICS @ 25oC
MAXIMUM
DYNAMIC
IMPEDANCE
MAXIMUM REVERSE
LEAKAGE CURRENT
VOLTAGE
NOMINAL
ZENER
VOLTAGE
VZ @ IZT
TEST
CURRENT
IZT
ZZ @
IZT
ZZK* @
IZK=1mA
VOLTAGE
REGULATION
(Note 1)
∆VZ
IR VR
MAXIMUM
TEMPERATURE
COEFF.
αVZ @ IZT
MAXIMUM
CONTINUOUS
CURRENT
IZM
SURGE
CURRENT
IZSM
TYPE*
VOLTS mA OHMS OHMS VOLTS µA VOLTS %/oC mA AMPS
1N6632US
1N6633US
1N6634US
1N6635US
1N6636US
1N6637US
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
1N5968US
1N5969US
1N4954US
1N4955US
1N4956US
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
1N4957US
1N4958US
1N4959US
1N4960US
1N4961US
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
1N4962US
1N4963US
1N4964US
1N4965US
1N4966US
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
1N4967US
1N4968US
1N4969US
1N4970US
1N4971US
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
1N4972US
1N4973US
1N4974US
1N4975US
1N4976US
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
1N4977US
1N4978US
1N4979US
1N4980US
1N4981US
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
1N4982US
1N4983US
1N4984US
1N4985US
1N4986US
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
1N4987US
1N4988US
1N4989US
1N4990US
1N4991US
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
1N4992US
1N4993US
1N4994US
1N4995US
1N4996US
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
*IZK = 5 mA for 1N5968
NOTE 1: Maximum voltage change ∆VZ between 10% of IZM and 50% of IZM
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
Copyright 2004
11-22-2004 REV B
VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
SCOTTSDALE DIVISION
1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
WWW.Microsemi .COM 1N4954US thru 1N4996US
1N5968US thru 1N5969US
1N6632US thru 1N6637US
SYMBOLS & DEFINITIONS
Symbol Definition
VZ Zener Voltage: The zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
IZ, IZT, IZK Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), or near breakdown knee (IZK).
ZZT or ZZK 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 IZT or IZK) and superimposed on IZT or IZK respectively.
VF Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
IR Maximum Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and
temperature.
IZM Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
IZSM Maximum Zener Surge Current: The nonrepetitive peak value of zener surge current at a specified wave form.
GRAPHS
FIGURE 1
SURGE POWER vs.
SURGE DURATION
FIGURE 2
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 2004
11-22-2004 REV B
VOIDLESS-HERMETICALLY-SEALED
Surface Mount 5 WATT GLASS ZENER
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 4
Copyright 2004
11-22-2004 REV B
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N4954US thru 1N4996US, 1N5968US thru
1N5969US, and 1N6632US thru 1N6637US
1N4954US thru 1N4996US
1N5968US thru 1N5969US
1N6632US thru 1N6637US
PACKAGE DIMENSIONS AND PAD LAYOUT
This Package Outline has also previously
been identified as “D-5B”
Note: If mounting requires adhesive separate from the solder,
an additional 0.080 inch diameter contact may be placed in the
center between the pads as an optional spot for cement as
shown in the pad layout.
