T4-LDS-0228, Rev. 1 (111898) ©2011 Microsemi Corporation Page 1 of 5
1N5985B-1 thru 1N6031B-1
Availa ble on
commercial
versions
Axial-Leaded 500 mW Zener Diodes
Screening in
reference to
MIL-PRF-19500
available
DESCRIPTION
The popular 1N5985B-1 thru 1N6031B-1 series of 0.5 watt Zener voltage regulators provides a
selection from 2.4 to 200 volts in 10%, 5%, 2% and 1% tolerances. These axial-leaded, glass,
DO-35 packaged Zeners are also available in various military equivalent screening levels by
adding a prefix identifier as described in the “part nomenclature” section. Microsemi also
offers numerous other Zener products to meet higher and lower power applications.
DO-35 (DO-204AH)
Package
Also available in:
DO-213AA
(surface mount)
1N5985BUR-1 – 1N6031BUR-1
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
• JEDEC registered 1N5985 thru 1N6031 series.
• Similar to operating current conditions of the BZX55 Pro Electron series of Zener products in
Europe.
• Multiple voltage tolerances are available (see part nomenclature).
• Interna l meta llurg ic al bonds.
• High-Reliability screened equivalents in reference to MIL-PRF-19500 are available.
• RoHS compliant versions available (commercial grade only).
APPLICATIONS / BENEFITS
• Regulates voltage over a broad operating current and temperature range.
• Extensive selection from 2.4 to 200 volts.
• Flexible axial-lea d mount ing te rmina ls.
• Non-sensitive to ESD (MIL-STD-750, method 1020).
• Minimal capacitance (see Figure 2).
• Inherently radiation hard as described in Microsemi “MicroNote 050”.
MAXIMUM RATINGS
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
Parameters/Test Conditions
Symbol
Value
Unit
Power Dissipation at 25
o
C
(1)
(Also see derating in Figure 1)
PD 0.5 W
Junction and Storage Temperature
TJ and TSTG
-65 to +175
oC
Thermal Resi stan ce Jun cti on-to-Lead (2)
RӨJL
250
oC/W
Thermal Resi stan ce Jun cti on-to-Ambient (3)
RӨJA
310
oC/W
Forward Voltage @ 200 mA
VF
1.1
V
Solder Temperature @ 10 s
TSP
260
OC
Notes: 1. At TL < 50 oC 3/8 inch (10 mm) from body or 0.48 W at TA < 25 ºC when mounted on FR4 PC board as
described for thermal resistance above.
2. Junction to lead at 3/8 (10 mm ) lead lengt h from body.
3. Junction to ambient when mounted on FR4 PC board (1 oz Cu) with 4 mm2 copper pads and track width
1 mm, length 25 mm.
T4-LDS-0228, Rev. 1 (111898) ©2011 Microsemi Corporation Page 2 of 5
1N5985B-1 thru 1N6031B-1
MECHANICAL and PACKAGING
• CASE: Hermetically sealed axial-lead gla ss DO-35 (DO-204AH) package.
• TERMINALS: Tin-lead or RoHS compliant matte-tin (commercial grade only) plating solderable per MIL-STD-750, method 2026.
• POLARITY: Cathode indicated by band. Diode to be operated with the banded end positive with respect to the opposite end for
Zener regulation.
• MARKING: Part number.
• TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number). Consult factory for quantities.
• WEIGHT: 0.2 grams.
• See Package Dimensions on last page.
PART NOMENCLATURE
MQ 1N5985 B -1 (e3)
Reliability Level
MQ (reference JAN)
MX (reference JANTX)
MV (reference JANTXV)
CDS (reference JANS)
Blank = commercial
JEDEC type number
See Electrical Characte risti c s
table
RoHS Compli ance
e3 = RoHS compliant (available
on commercial grade only)
Blank = non-RoHS compliant
Metallurgically Bonded
Zener Voltage Tolerance
A = 10%
B = 5%
C = 2%
D = 1%
SYMBOLS & DEFINITIONS
Symbol
Definition
IR
Reverse Current: The maximum reverse (leakage) current that will flow at the specified voltage and temperature.
IZ, IZT, IZK
Regulator Current: The dc regulator current (IZ), at a specified test point (IZT), near breakdown knee (IZK).
IZM
Maximum Regulator (Zener) Current: The maximum rated dc current for the specified power rating.
VF
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
VZ
Zener Voltage: The Zener voltage the device will exhi bit at a specified c urrent (IZ) in its breakdown region.
ZZT or ZZK
Dynamic Impedance: The small signal impedance of the diode when biased to operate in its breakdown region at a
specified rm s current modulation (typically 10% of IZT or IZK) and super im pos ed on IZT or IZK respectively.
T4-LDS-0228, Rev. 1 (111898) ©2011 Microsemi Corporation Page 3 of 5
1N5985B-1 thru 1N6031B-1
ELECTRICAL CHA RACTERISTICS @ 30oC Lead Temperature. Lead Length 3/8”.
JEDEC
Type
Number
Nominal
Zener
Voltage
VZ @ IZT
(Note 2)
Volts
Test
Current
IZT
mA
Max. Zener Impedance
(Note 1)
Max. Reverse Leakage Current
Max. dc
Zener
Current
IZM
(Note 3)
mA
Typical
Temp.
Coeff.
of Zener
Voltage
α
VZ
%/
o
C
ZZT @ IZT
Ohms
ZZK @ IZK = 0.25 mA
Ohms
I
R
@ V
R
µA
Volts
B,C,D
Suffix
A
Suffix
B,C,D
Suffix
A
Suffix
B,C,D
Suffix
A
Suffix
B,C,D
Suffix
A
Suffix
1N5985B
1N5986B
1N5987B
1N5988B
2.4
2.7
3.0
3.3
5.0
5.0
5.0
5.0
100
100
95
95
110
110
100
100
1800
1900
2000
2200
2000
2200
2300
2400
100
75
50
25
100
100
100
75
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.5
208
185
167
152
-0.090
-0.075
-0.070
-0.060
1N5989B
1N5990B
1N5991B
1N5992B
3.6
3.9
4.3
4.7
5.0
5.0
5.0
5.0
90
90
88
70
95
95
90
90
2300
2400
2500
2200
2500
2500
2500
2500
15
10
5.0
3.0
50
25
15
10
1.0
1.0
1.0
1.5
0.5
1.0
1.0
1.0
139
128
116
106
-0.055
-0.045
-0.010
+0.010
1N5993B
1N5994B
1N5995B
1N5996B
5.1
5.6
6.2
6.8
5.0
5.0
5.0
5.0
50
25
10
8.0
88
70
50
25
2050
1800
1300
750
2500
2200
2050
1800
2.0
2.0
1.0
1.0
5.0
3.0
2.0
2.0
2.0
3.0
4.0
5.2
1.0
1.5
2.0
3.0
98
89
81
74
+0.025
+0.035
+0.040
+0.044
1N5997B
1N5998B
1N5999B
1N6000B
7.5
8.2
9.1
10
5.0
5.0
5.0
5.0
7.0
7.0
10
15
10
15
18
22
600
600
600
600
1300
750
600
600
0.5
0.5
0.1
0.1
1.0
1.0
0.5
0.5
6.0
6.5
7.0
8.0
4.0
5.2
6.0
6.5
67
61
55
50
+0.051
+0.055
+0.061
+0.065
1N6001B
1N6002B
1N6003B
1N6004B
11
12
13
15
5.0
5.0
5.0
5.0
18
22
25
32
25
32
36
42
600
600
600
600
600
600
600
600
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
8.4
9.1
9.9
11
7.0
8.0
8.4
9.1
45
42
38
33
+0.068
+0.073
+0.075
+0.079
1N6005B
1N6006B
1N6007B
1N6008B
16
18
20
22
5.0
5.0
5.0
5.0
36
42
48
55
48
55
62
70
600
600
600
600
600
600
600
600
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12
14
15
17
9.9
11
12
14
31
28
25
23
+0.080
+0.083
+0.085
+0.087
1N6009B
1N6010B
1N6011B
1N6012B
24
27
30
33
5.0
5.0
5.0
5.0
62
70
78
88
78
88
95
110
600
600
600
700
600
700
700
800
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
18
21
23
25
15
17
18
21
21
19
17
15
+0.090
+0.091
+0.093
+0.094
1N6013B
1N6014B
1N6015B
1N6016B
36
39
43
47
5.0
2.0
2.0
2.0
95
130
150
170
130
170
180
200
700
800
900
1000
900
1000
1100
1300
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
27
30
33
36
23
25
27
30
14
13
12
11
+0.094
+0.095
+0.095
+0.096
1N6017B
1N6018B
1N6019B
1N6020B
51
56
62
68
2.0
2.0
2.0
2.0
180
200
225
240
225
240
265
280
1300
1400
1400
1600
1400
1600
1700
2000
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
39
43
47
52
33
36
39
43
9.8
8.9
8.0
7.4
+0.096
+0.096
+0.097
+0.097
1N6021B
1N6022B
1N6023B
1N6024B
75
82
91
100
2.0
2.0
2.0
1.0
265
280
300
500
300
350
400
800
1700
2000
2300
2600
2300
2600
3000
4000
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
56
62
69
76
47
52
56
62
6.7
6.1
5.5
5.0
+0.098
+0.098
+0.099
+0.110
1N6025B
1N6026B
1N6027B
1N6028B
110
120
130
150
1.0
1.0
1.0
1.0
650
800
950
1250
950
1250
1400
1700
3000
4000
4500
5000
4500
5000
5500
6000
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
84
91
99
114
69
76
84
91
4.5
4.2
3.8
3.3
+0.110
+0.110
+0.110
+0.110
1N6029B
1N6030B
1N6031B
160
180
200
1.0
1.0
1.0
1400
1700
2000
2000
2350
2700
5500
6000
7000
7000
8000
9000
0.1
0.1
0.1
0.1
0.1
0.1
122
137
152
99
114
122
3.1
2.8
2.5
+0.110
+0.110
+0.110
T4-LDS-0228, Rev. 1 (111898) ©2011 Microsemi Corporation Page 4 of 5
1N5985B-1 thru 1N6031B-1
NOTES:
1. Zener impedance is derived from the 1 kHz ac voltage which res ults when an ac current having an rms value equal to 10% of dc Zener
current (IZT or IZK) is superimposed on IZT or IZK. S ee “MicroNot e 202” for dynamic impedance variation with ot her operat i ng current s.
2. Volt age meas urem ents to be performed 20 seconds after applicat i on of the dc test current.
3. The maximum Zener current IZM shown is for the nominal voltages. The following formul a can be used to determine the worst case
current for any toleranc e device:
IZM =
Where VZM is the high end of the voltage tolerance specified and P is the rated power of the device.
GRAPHS
TL Lead Temperature at 3/8” From Body Zener Voltage VZ
or TA on FR4 PC Board
FIGURE 1 FIGURE 2
POWER DERATING CURVE CAPACITANCE vs. ZENER VOLTAGE (TYPICAL)
P
V
ZM
Pd, Rated Power Dissipation (mW)
Typical Capacitance in Pico Farads (pF)
T4-LDS-0228, Rev. 1 (111898) ©2011 Microsemi Corporation Page 5 of 5
1N5985B-1 thru 1N6031B-1
PACKAGE DIMENSIONS
Ltr
DIMENSION
Notes
INCH
MILLIMETERS
Min
Max
Min
Max
BD
.055
.090
1.40
2.29
3
BL
.120
.200
3.05
5.08
3
LD
.018
.022
0.46
0.56
LL
1.000
1.500
25.40
38.10
LL1
.050
1.27
4
NOTES:
1. Dimensions are in inch.
2. Millimeters are given for general information only.
3. Package contour optional within BD and length BL. Heat slugs, if any, shall be included within this cylinder
but shall not be subject to minimum limit of BD. The BL dimension shall include the entire body including
slugs.
4. Within this zone lead, diameter may vary to allow for lead finishes and irregularities other than heat slugs.
5. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology.
