1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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1N6309 thru 1N6355D
Available on
commercial
versions
VOIDLESS HERMETICALLY SEALED
500mW GLASS ZENER DIODES
Qualified per MIL-PRF-19500/533
DESCRIPTION
This Zener voltage regulator series is military qualified and is ideal for high-reliability
applications where a failure cannot be tolerated. These industry-recognized 0.5 watt Zener
voltage regulators are hermetically sealed with voidless-glass construction using an internal
metallurgical bond. It includes Zener selections from 2.4 to 200 volts in standard 5%
tolerances as well as 1% and 2% tolerances. They are also available in surface-mount
packages. 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 latest information, visit our website http://www.microsemi.com.
FEATURES
JEDEC registered 1N6309 thru 1N6355 series.
Voltage tolerances of 1%, 2% and 5% are available. (See part nomenclature.)
Voidless hermetically sealed glass package.
Internal “Category 1metallurgical bonds for 1N6321 thru 1N6355 and “Category IIIfor 1N6309
thru 1N6320.
JAN, JANTX, JANTXV, and JANS reliability levels are available per MIL-PRF-19500/533.
RoHS compliant versions available (commercial grade only).
APPLICATIONS / BENEFITS
Small DO-35 size package (or “D” Package).
Regulates voltage over a broad operating current and temperature range.
Extensive selection from 2.4 to 200 volts.
Standard and tight voltage tolerances available.
Extremely robust construction.
Flexible axial-lead mounting terminals.
Non-sensitive to ESD per MIL-STD-750 method 1020.
Inherently radiation hard as described in Microsemi “MicroNote 050”.
Qualified Levels:
JAN, JANTX, JANTXV
and JANS
DO-35 or
“D” Package
Also available in:
“B” SQ MELF package
(surface mount)
1N6309US – 1N6355DUS
MAXIMUM RATINGS
Parameters/Test Conditions
Junction and Storage Temperature
Thermal Resistance Junction-to-Lead (1)
1N6309 – 1N6320
1N6321 – 1N6355
Thermal Resistance Junction-to-Ambient (2)
Steady-State Power Dissipation @ TL = 75 oC
Forward Voltage @ 1.0 A
Solder Temperature @ 10 s
Symbol
TJ and TSTG
R ӨJL
R ӨJA
PD
VF
T SP
Value
-65 to +175
150
95.5
240
0.5
1.4
260
Unit
oC
oC/W
oC/W
W
V
oC
Notes:
1. At 3/8 inch (10 mm) from body. See Figure 1 and Figure 2 for derating.
2. TA = +55 °C before derating on printed circuit board (PCB), PCB = FR4 .0625 inch (1.59 mm) 1-layer 1-
Oz Cu, horizontal, still air, pads = .092 inch (2.34 mm) diameter, strip = .030 inch (0.76 mm) x 1 inch
(25.4 mm) long, axial lead length L ≤ .187 inch (≤ 4.75 mm); RΘJA with a defined thermal resistance
condition included is measured at IZ = as defined in the characteristics and ratings table herein.
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
T4-LDS-0193, Rev. 2 (111899)
©2011 Microsemi Corporation
Page 1 of 6


1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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1N6309 thru 1N6355D
MECHANICAL and PACKAGING
CASE: Hermetically sealed voidless hard glass with tungsten slugs.
TERMINALS: Axial-leads are tin/lead (Sn/Pb) or RoHS compliant matte/tin (commercial grade only) over copper clad steel.
MARKING: Body painted and part number.
POLARITY: Cathode indicated by band.
TAPE & REEL option: Standard per EIA-296. Consult factory for quantities.
WEIGHT: 150 milligrams.
See Package Dimensions on last page.
Reliability Level
JAN = JAN Level
JANTX = JANTX Level
JANTXV = JANTXV Level
JANS = JANS Level
Blank = Commercial
JEDEC type number
(see Electrical Characteristics
table)
PART NOMENCLATURE
JAN 1N6309 C (e3)
RoHS Compliance
e3 = RoHS Compliant (available
on commercial grade only)
Blank = non-RoHS Compliant
Zener Voltage Tolerance
C = +/- 2%
D = +/- 1%
Blank = +/- 5%
Symbol
IR
IZ, IZT, IZK
I ZM
I ZSM
VF
VWM
VZ
ZZT or ZZK
SYMBOLS & DEFINITIONS
Definition
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
Maximum Zener Surge Current: The non-repetitive peak value of Zener surge current at a specified wave form.
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
Working Peak Voltage: The maximum peak voltage that can be applied over the operating temperature range. This is
also referred to as Standoff Voltage.
Zener Voltage: The Zener voltage the device will exhibit at a specified current (IZ) in its breakdown region.
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.
T4-LDS-0193, Rev. 2 (111899)
©2011 Microsemi Corporation
Page 2 of 6


1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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1N6309 thru 1N6355D
ELECTRICAL CHARACTERISTICS @ 25oC
TYPE
Note 1
1N6309
1N6310
1N6311
1N6312
1N6313
1N6314
1N6315
1N6316
1N6317
1N6318
1N6319
1N6320
1N6321
1N6322
1N6323
1N6324
1N6325
1N6326
1N6327
1N6328
1N6329
1N6330
1N6331
1N6332
1N6333
1N6334
1N6335
1N6336
1N6337
1N6338
1N6339
1N6340
1N6341
1N6342
1N6343
1N6344
1N6345
1N6346
1N6347
1N6348
1N6349
1N6350
1N6351
1N6352
1N6353
1N6354
1N6355
V Z2
NOM.
+/-5%
@ IZ2
VZ1 Test
MIN. Current
@ IZ1
250 uA
I Z2
Volts
2.4
2.7
3.0
3.3
3.6
3.9
4.3
Volts
1.1
1.2
1.3
1.5
1.8
2.0
2.4
4.7 2.8
5.1 3.3
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
4.3
5.2
6.0
6.6
7.5
8.4
9.1
10.0
11.0
11.9
13.8
14.7
16.6
18.5
20.4
22.3
25.2
28.0
30.9
33.7
36.6
40.4
44.2
48.0
52.7
58.4
64.1
70.8
77.4
86.0
94.5
104.0
113.0
122
141
151
170
189
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
8.5
7.8
7.0
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.0
1.8
1.7
1.5
1.4
1.3
1.1
1.0
0.95
0.85
0.80
0.68
0.65
Dynamic Dynamic Max. Voltage
Impedance Impedance Current Reg.
ZZ @ IZ2
Z ZK
I ZM V Z(reg)
@
250 µA
(V Z )
Note 2
ohms
30
30
29
27
25
23
20
17
14
8
3
3
4
5
6
6
7
7
8
10
12
14
18
20
24
27
32
40
50
55
65
75
85
100
125
155
180
220
270
340
500
600
850
1,000
1,200
1,500
1,800
ohms
1,200
1,300
1,400
1,400
1,400
1,700
1,700
1,500
1,300
1,200
800
400
400
400
500
500
550
550
550
600
600
600
500
500
500
500
500
600
600
700
800
900
1,000
1,200
1,300
1,500
1,600
1,800
2,100
2,400
2,800
3,200
4,100
4,500
5,000
5,600
6,500
mA
177
157
141
128
117
108
99
90
83
76
68
63
57
52
47
43
39
35
33
28
27
24
21
19
18
16
14
13
12
11
9.9
9.0
8.3
7.6
6.8
6.3
5.7
5.2
4.7
4.3
3.9
3.5
3.3
2.8
2.7
2.4
2.1
Volts
1.50
1.50
1.50
1.60
1.60
1.60
0.90
0.50
0.40
0.40
0.30
0.35
0.40
0.40
0.50
0.50
0.50
0.55
0.55
0.70
0.75
0.85
0.95
1.05
1.15
1.30
1.45
1.60
1.75
1.90
2.10
2.25
2.50
2.70
2.90
3.20
3.40
3.80
4.20
4.40
4.80
5.20
5.60
7.00
7.50
9.00
12.00
Surge Reverse Max.
Max.
Max.
Max.
Current Voltage Reverse Reverse Noise Temp.
8.3 ms
quare
Wave
I ZSM
VR Current Current Density Coeff. of
IR1 @ VR IR2 @ VR
ND
Zener
25 oC 150 oC @ 250 µA Voltage
1 to 3 kHz αVZ
Amps Volts µA
µA µV /√Hz %/oC
2.50 1.0 100 200
1 -.085
2.20 1.0
60 150
1 -.080
2.00 1.0
30 100
1 -.075
1.80 1.0 5 20
1 -.070
1.65 1.0 3 12
1 -.065
1.50 1.0 2 12
1 -.060
1.40 1.0 2 12
1 -.045
+.020
1.27 1.5 5 12
1 -.028
+.032
1.17 2.0 5 12
1 -.020
+.035
1.10 2.5 5 10
2 +.050
0.97 3.5 5 10
5 +.060
1.23 4.0 2 50
5 +.062
1.16 5.0 2 30
5 +.068
1.07 6.0 1 10
20 +.075
0.97 7.0 1 10
40 +.076
0.89 8.0 1 10
80 +.079
0.83 8.5 1 10 100 +.082
0.77 9.0 1 10 100 +.083
0.71
9.9 0.05 10
100 +.083
0.62
11.0 0.05
10
100 +.084
0.58
12.0 0.05
10
100 +.084
0.52
14.0 0.05
10
100 +.085
0.47
15.0 0.05
10
100 +.086
0.43
17.0 0.05
10
100 +.087
0.39
18.0 0.05
10
100 +.088
0.35
21.0 0.05
10
100 +.090
0.31
23.0 0.05
10
100 +.091
0.28
25.0 0.05
10
100 +.092
0.260 27.0 0.05
10
100 +.093
0.240 30 0.05 10
100 +.094
0.220 33 0.05 10
80 +.095
0.200 36 0.05 10
80 +.095
0.180 39 0.05 10
80 +.096
0.170 43 0.05 10
80 +.097
0.150 47 0.05 10
80 +.099
0.130 52 0.05 10
80 +.101
0.125 56 0.05 10
80 +.103
0.115 62 0.05 10
80 +.105
0.100 69 0.05 10
80 +.108
0.095 76 0.05 10
80 +.110
0.085 84 0.05 10
80 +.110
0.080 91 0.05 10
80 +.110
0.070 99 0.05 10
80 +.110
0.065 114 0.05 10
80 +.110
0.060 122 0.05 10
80 +.110
0.050 137 0.05 10
80 +.110
0.045 152 0.05 10
80 +.110
NOTES:
1. Standard voltage tolerance is 5 percent. Tighter tolerances are available in plus/minus 1 and 2 percent voltage tolerances. (See part
nomenclature.)
2. Voltage regulation VZ(reg) is the measured voltage change at thermal equilibrium between the current of 10% and 50% of maximum Zener
current IZM when the lead temperature is maintained at 25 °C =+8 °C, -2 °C.
T4-LDS-0193, Rev. 2 (111899)
©2011 Microsemi Corporation
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1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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GRAPHS
1N6309 thru 1N6355D
TL (oC) Lead = 3/8 inch
FIGURE 1 - (1N6309 – 1N6320)
TL Temperature-Power Derating Curve
RӨJL 3/8 inch = 150 oC/W (dc operation)
T4-LDS-0193, Rev. 2 (111899)
TL (oC) Lead = 3/8 inch
FIGURE 2 - (1N6321 – 1N6355)
TL Temperature-Power Derating Curve
RӨJL 3/8 inch = 95.5 oC/W (dc operation)
©2011 Microsemi Corporation
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1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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GRAPHS (continued)
1N6309 thru 1N6355D
TPCB (oC) Ambient
FIGURE 3
Temperature-Power Derating Curve
RӨJA = 240 oC/W (dc operation)
T4-LDS-0193, Rev. 2 (111899)
©2011 Microsemi Corporation
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1N6346C (Microsemi)
500mW GLASS ZENER DIODES

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PACKAGE DIMENSIONS
1N6309 thru 1N6355D
NOTE:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Lead diameter not controlled in this zone to allow for flash.
Lead finish build-up and minor irregularities other than slugs.
4. In accordance with ASME Y14.5M, diameters are equivalent to
Φx symbology.
5. The BL dimension shall include the entire body including slugs.
DIMENSIONS
Ltr
INCH
MILLIMETERS Notes
Min Max Min Max
BD .060 .090 1.52 2.29
BL .120 .200 3.05 5.08
5
LD .018 .022 0.46 0.56
LL 1.000 1.500 25.40 38.10
LL1 .050 1.27 3
T4-LDS-0193, Rev. 2 (111899)
©2011 Microsemi Corporation
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