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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 1 of 6
DEVICES LEVELS
1N2970 thru 1N3015B JAN
and JANTX
1N3993 thru 1N4000A JANTXV
DESCRIPTION
These high power 10 W Zener diodes represented by the JEDEC registered
1N2970 thru 1N3015B and 1N3993 thru 1N4000A series provide voltage
regulation in a selection over a 3.9 V to 200 V broad range of voltages. They may
be operated up to 10 W with adequate mounting and heat sinking with their low
thermal resistance. These Zeners are also available in JAN, JANTX, JANTXV
military qualifications. Microsemi also offers numerous other Zener products to
meet higher and lower power applications.
FEATURES
¾ JEDEC registered 1N2970 thru 1N3015B and 1N3993 thru 1N4000A
¾ Internal solder bond construction
¾ Hermetically sealed (welded)
¾ Zener Voltage 3.9V to 200V.
¾ Also available in JAN, JANTX, and JANTXV qualifications per MIL-
PRF-19500/124 by adding the JAN, JANTX, or JANTXV prefixes to part
numbers for desired level of screening; (e.g. JANTX1N2970B,
JANTXV1N3996A, etc.
¾ Standard polarity is anode to case (stud) for 1N2970 thru 1N3015B and
cathode to case for 1N3993 thru 1N4000A
¾ Reverse polarity is cathode to case for 1N2970 thru 1N3015B and anode to
case for 1N3993 thru 1N4000A by designating R suffix, e.g. 1N2970RB,
1N3993RA, etc.
¾ Consult factory for surface mount equivalents
DO-4 (DO-203AA)
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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 2 of 6
APPLICATIONS / BENEFITS
¾ Regulates voltage over a broad operating current and temperature range
¾ Standard voltage tolerances are +/- 5% with B suffix, +/-10% with an A suffix, and +/-20% with no suffix
¾ Consult factory for +/-2% or +/-1% voltage tolerance with a C or D suffix respectively
¾ Reverse polarity available
¾ Nonsensitive to ESD per MIL-STD-750 Method 1020
¾ Inherently radiation hard as described in Microsemi MicroNote 050
MAXIMUM RATINGS
¾ Junction Temperatures: -65oC to +175oC
¾ Storage Temperatures: -65oC to +200oC
¾ DC Power Dissipation: 10 Watts
¾ Power Derating: 80 mW/oC above 50oC
¾ Forward Voltage @ 2.0 A: 1.5 Volts
¾ THERMAL RESISTANCE: 10oC/W (typical) junction to case (stud)
¾ Solder temperatures: 260 oC for 10 s (max)
MECHANICAL AND PACKAGING
¾ CASE: Industry Standard DO-4, (DO-203AA), 7/16” Hex, stud with 10-32 threads, welded, hermetically
sealed metal and glass
¾ FINISH: All external surfaces are corrosion resistant and terminal solderable
¾ POLARITY: 1N3993 – 1N4000: Std. Polarity is cathode to stud. Reverse polarity (anode to stud) indicated
by suffix “R”
¾ 1N2970 – 1N3015: Std. Polarity is anode to stud. Reverse polarity indicated by suffix “R”
¾ WEIGHT: 7.5 grams
¾ MOUNTING HARDWARE: Consult factory for optional insulator, bushing solder terminal, washers, and nut
See package dimension on last page.
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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 3 of 6
ELECTRICAL CHARACTERISTICS @ 30°C Case Temperature
MAX. DYNAMIC
IMPEDANCE
(Note 3)
MAX**
REVERSE
CURRENT
IR @ VR
JEDEC
TYPE NO.
(Note 1)
NOMINAL
ZENER
VOLTAGE
VZ @ IZT
(Note 2)
Volts
ZENER
TEST
CURRENT
(IZT)
mA ZZT @ IZT
OHMS
ZZK @
1mA (IZK)
OHMS
MAX. DC ZENER
CURRENT
(IZM) @ 75oC
Stud Temp.
(Note 4)
mA
TYPICAL
TEMP.
COEFF.
αVZ
%/oC μA Volts
POLARITY
†1N3993A
†1N3994A
†1N3995A
†1N3996A
†1N3997A
†1N3998A
†1N3999A
†1N4000A
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
640
580
530
490
445
405
370
335
2.0
1.5
1.2
1.1
1.0
1.1
1.2
1.3
400
400
500
550
600
750
500
250
2380
2130
1940
1780
1620
1460
1330
1210
-.046
-.033
-.015
+/-.010
+.030
+.049
+.040
+.045
100
100
50
10
10
10
10
10
0.5
0.5
1.0
1.0
1.0
2.0
2.0
3.0
STD.
POLARITY
CATHODE
TO
STUD
†1N2970B
†1N2971B
†1N2972B
†1N2973B
†1N2974B
†1N2975B
6.8
7.5
8.2
9.1
10
11
370
335
305
275
250
230
1.2
1.3
1.5
2.0
3
3
500
250
250
250
250
250
1320
1180
1040
960
860
780
.040
.045
.048
.051
.055
.060
150
100
50
25
25
10
5.2
5.7
6.2
6.9
7.6
8.4
†1N2976B
†1N2977B
1N2978B
†1N2979B
†1N2980B
1N2981B
12
13
14
15
16
17
210
190
180
170
155
145
3
3
3
3
4
4
250
250
250
250
250
250
720
660
600
560
530
500
.065
.065
.070
.070
.070
.075
10
10
10
10
10
10
9.1
9.9
10.5
11.4
12.2
13.0
†1N2982B
1N2983B
†1N2984B
†1N2985B
†1N2986B
1N2987B
18
19
20
22
24
25
140
130
125
115
105
100
4
4
4
5
5
6
250
250
250
250
250
250
460
440
420
380
350
310
.075
.075
.075
.080
.080
.080
10
10
10
10
10
10
13.7
14.0
15.2
16.7
18.2
18.2
†1N2988B
†1N2989B
†1N2990B
†1N2991B
†1N2992B
†1N2993B
27
30
33
36
39
43
95
85
75
70
65
60
7
8
9
10
11
12
250
300
300
300
300
400
300
280
260
230
210
195
.085
.085
.085
.085
.090
.090
10
10
10
10
10
10
20.6
22.8
25.1
27.4
29.7
32.7
1N2994B
†1N2995B
1N2996B
†1N2997B
1N2998B
†1N3099B
†1N3000B
45
47
50
51
52
56
62
55
55
50
50
50
45
40
13
14
15
15
15
16
17
400
400
500
500
500
500
600
185
175
165
160
160
150
130
.090
.090
.090
.090
.090
.090
.090
10
10
10
10
10
10
10
33.0
35.8
36.0
38.8
39.0
42.6
47.1
†1N3001B
†1N3002B
†1N3003B
†1N3004B
†1N3005B
1N3006B
†1N3007B
68
75
82
91
100
105
110
37
33
30
28
25
25
23
18
22
25
35
40
45
55
600
600
700
800
900
1000
1100
120
110
100
85
80
75
72
.090
.090
.090
.090
.090
.095
.095
10
10
10
10
10
10
10
51.7
56.0
62.2
69.2
76.0
76.0
83.6
†1N3008B
†1N3009B
1N3010B
†1N3011B
†1N3012B
1N3013B
†1N3014B
†1N3015B
120
130
140
150
160
175
180
200
20
19
18
17
16
14
14
12
75
100
125
175
200
250
260
300
1200
1300
1400
1500
1600
1750
1850
2000
67
62
58
54
50
46
45
40
.095
.095
.095
.095
.095
.095
.095
.100
10
10
10
10
10
10
10
10
91.2
98.8
100.0
114.0
121.6
135.0
136.8
152.0
STD.
POLARITY
ANODE
TO STUD
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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 4 of 6
*
JEDEC Registered Data.
** Not JEDEC Data.
† Have JAN and JANTX Qualifications to MIL-PRF-19500/124.
See further notes on following page.
NOTES:
1. 1N3993 - 1N4000 series: suffix A indicates +/-5% tolerance, no suffix indicates +/-10% tolerance. 1N2970
– 1N3015 series: suffix B indicates +/- 5% tolerance, suffix A indicates +/-10%, no suffix indicates +/-20%
tolerance. If tighter tolerance is required, consult factory.
2. The electrical characteristics are measured after allowing the device to stabilize for 90 seconds with 30oC
Base temperature.
3. The zener impedance (ZZT) is derived from the 60 Hz ac voltage, which results when an ac current having an
rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK. When making
zener impedance measurements at the IZK test point, it may be necessary to insert a 60 Hz band pass filter
between the diode and voltmeter to avoid errors resulting from low level noise signals. A curve showing the
variation of zener impedance vs. zener current for three representative types is shown in Figures 2 and 3.
Also see Microsemi MicroNote 202.
4. These values of IZM may be exceeded in the case of individual diodes. The values shown are calculated for
the worst case that is a unit of +/-5% tolerance at the high voltage end of its tolerance range. Allowance has
also been made for the rise in zener voltage above VZT, which results from zener impedance and the increase
in junction temperature as power dissipation approaches 10 watts.
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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 5 of 6
GRAPHS
FIGURE 1
Stud Temperature (oC)
Power Derating Curve
FIGURE 2 FIGURE 3
Typical Zener Im pedance vs. Zener Current Typical Zener Impedance vs. Zener Current
For Typ e s Shown For Types Shown
Pd Rated Power Dissipation - Watts
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
10 WATT ZENER DIODES
Qualified per MIL-PRF-19500/124
T4-LDS-0075 Rev. 1 (082463) Page 6 of 6
PACKAGE DIMENSIONS
10-32 UNF-2A (MOD) PITCH DIA.
MIN. .1658 MAX. .1697 TO WITH-
STAND A TORQUE UP TO 30 IN-LB.
WHEN NUT IS TIGHT E NE D ON STUD
All dimensions in: INCH
mm
