TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
VOIDLESS-HERMETICALLY-SEALED 1.5
WATT GLASS ZENER DIODE
Qualified per MIL-PRF-19500/406
DEVICES
LEVELS
1N4460 thru 1N4496 & C / D / US
1N6485 thru 1N6491 & C / D / US
JAN
JANTX
JANTXV
JANS
DESCRIPTION
This Zener Voltage Regulator series is military qualified to MIL-PRF-19500/406 and is ideal
for high-reliability applications where a failure cannot be tolerated. These industry-
recognized 1.5 Watt Zener Voltage Regulators are hermetically sealed with voidless-glass
construction using an internal metallurgical bond. It includes Zener selections from 3.3 to 200
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 1N4460US thru 1N4496US and 1N6485US thru 1N6491US). 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
Popular JEDEC registered series
Voidless hermetically sealed glass package
Extremely robust construction
Triple-layer passivation
Internal “Category
I”
Metallurgical bonds for 1N4462 thru 1N4496 and “Category
III”
for 1N6485 thru 1N6491 as well as 1N4460 and 1N4461.
JAN, JANTX, JANTXV, and JANS available per MIL-PRF-19500/406
Surface mount equivalents also available in a square end-cap MELF configuration with
a “US” suffix (see separate data sheet for 1N4460US thru 1N4496US and 1N6485US
thru 1N6491US)
DO-41
T4-LDS-0183 Rev. 1 (101686)
Page 1 of 5
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range
Extensive selection from 3.3 to 200V
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 +200
o
C.
Power Dissipation: 1.5 Watts @ T
A
= 25
o
C
Thermal Resistance: 42
o
C/W junction to lead at 3/8 inch (10 mm) from body
Thermal Impedance: 4.5
o
C/W (1N4462 thru 1N4496) and 7.5
o
C/W (1N6485 thru 1N6491 as well as 1N4460
and 1N4461) at 10 ms
Forward Voltage: 1.00 V at 200 mA and 1.5 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
MARKING: Body painted and part number, etc.
POLARITY: Cathode indicated by band
Tape & Reel option: Standard per EIA-296
Weight: 340 mg
T4-LDS-0183 Rev. 1 (101686)
Page 2 of 5
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
ELECTRICAL CHARACTERISTICS @ 25°C Case Temperature
NOMINAL
MAXIMUM MAXIMUM KNEE
TEST
IMPEDANCE
ZENER
DYNAMIC
CURRENT
Z
ZK
@ I
ZK
VOLTAGE
IMPEDANCE
I
ZT
V
Z
Z
ZT
@ I
ZT
VOLTS
mA
OHMS
OHMS
mA
TYPE
MAXIMUM
REVERSE
CURRENT
I
R
@ V
R
μA
VOLTS
MAXIMUM
CONTINUOUS
CURRENT
I
ZM
mA
SURGE
CURRENT
@ 8.3 ms
sq. wave
I
ZSM
AMPS
1N6485
1N6486
1N6487
1N6488
1N6489
1N6490
1N6491
1N4460
1N4461
1N4462
1N4463
1N4464
1N4465
1N4466
1N4467
1N4468
1N4469
1N4470
1N4471
1N4472
1N4473
1N4474
1N4475
1N4476
1N4477
1N4478
1N4479
1N4480
1N4481
1N4482
1N4483
1N4484
1N4485
1N4486
1N4487
1N4488
1N4489
1N4490
1N4491
1N4492
1N4493
1N4494
1N4495
1N4496
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
62.0
68.0
75.0
82.0
91.0
100.0
110.0
120.0
130.0
150.0
160.0
180.0
200.0
76.0
69.0
64.0
58.0
53.0
49.0
45.0
40.0
37.0
34.0
31.0
28.0
25.0
23.0
21.0
19.0
17.0
15.5
14.0
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
2.0
2.0
1.9
1.7
1.6
1.4
1.2
10
10
9
9
8
7
5
4
2.5
2.5
3
4
5
6
7
8
9
10
11
12
14
16
18
20
25
27
30
40
50
60
70
80
100
130
160
200
250
300
400
500
700
1000
1300
1500
400
400
400
400
500
500
600
200
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
2000
2500
3000
3100
4000
4500
5000
6000
6500
7000
8000
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.5
.5
.5
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
50
50
35
5.0
4.0
1.0
0.5
10.0
5.0
1.0
.50
.30
.30
.30
.20
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.72
4.08
4.50
4.92
5.46
8.00
8.80
9.60
10.40
12.00
12.80
14.40
16.00
17.60
19.20
21.60
24.00
26.40
28.80
31.2
34.4
37.6
40.8
44.8
49.6
54.4
60.4
65.6
72.8
80.0
88.0
96.0
104.0
120.0
128.0
144.0
160.0
433
397
366
332
304
280
255
230
210
191
174
157
143
130
119
110
95
90
79
71
65
60
53
48
43
40
37
33
30
28
26
23
21
19
17
16
14
13
12
11
9.5
8.9
7.9
7.2
4.2
3.9
3.6
3.3
3.0
2.7
2.5
2.3
2.1
1.9
1.7
1.6
1.4
1.3
1.2
1.1
.95
.90
.79
.71
.65
.60
.53
.48
.43
.40
.37
.33
.30
.28
.26
.23
.21
.19
.17
.16
.14
.13
.12
.11
.095
.089
.079
.072
T4-LDS-0183 Rev. 1 (101686)
Page 3 of 5
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
SYMBOLS & DEFINITIONS
Symbol
V
Z
I
Z
, I
ZT
,
I
ZK
Z
ZT
or
Z
ZK
V
F
I
R
I
ZM
I
ZSM
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
), 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.
GRAPHS
FIGURE 1
TYPICAL TEMPERATURE
COEFFICIENT CHARACTERISTICS
FIGURE 2
POWER TEMPERATURE DERATING CURVE
T4-LDS-0183 Rev. 1 (101686)
Page 4 of 5
TECHNICAL DATA SHEET
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 620-2600 / Fax: (978) 689-0803
Website: http://www.microsemi.com
Gort Road Business Park, Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044 Fax: +353 (0) 65 6822298
PACKAGE DIMENSIONS
NOTE:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Package contour optional with BD and length BL. Heat
slugs, if any, shall be included within this cylinder length but
shall not be subject to minimum limit of BD.
4. The specified lead diameters apply in the zone between .050
inch (1.27 mm) from the diode body and the end of the lead.
5. In accordance with ASME Y14.5M, diameters are
equivalent to
φx
symbology.
Ltr
BL
BD
LL
LD
LU
Dimensions
Inches
Millimeters
Min Max Min Max
.106 .160 2.69 4.06
.060 .085 1.52 2.16
.800 1.300 20.32 33.02
.028 .032 0.71 0.81
.050
1.27
Notes
3
3
4
FIGURE 1.
Physical dimensions of nonsurface mount device (similar to DO-41)
NOTE:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. In accordance with ASME Y14.5M, diameters are equivalent
to
φx
symbology.
4. Dimensions are pre-solder dip.
Ltr
BL
ECT
S
BD
Dimensions
Inches
Millimeters
Min
Max
Min
Max
.168
.200
4.28
5.08
.019
.028
0.48
0.71
.003
0.08
.091
.103
2.31
2.62
FIGURE 2.
Physical dimensions of surface mount device, US(D5A).
T4-LDS-0183 Rev. 1 (101686)
Page 5 of 5
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