T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 1 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
Availa ble on
commercial
versions
50 Watt Zener Diodes
Qualified per MIL-PRF-19500/114
Qualified Levels:
JAN, JANTX, and
JANTXV
DESCRIPTION
This series of high power 50W Zener diodes, JEDEC registered 1N2804B through 1N2846B
and 1N4557B through 1N4564B, provide voltage regulation in values from 3.9 V to 200 V
broad range of voltages. They may be operated up to 50 W with adequate mounting and heat
sinking due to their low thermal resistance. These Zeners are also available in reverse polarity.
On select part numbers, these Zeners are also available in JAN, JANTX, and JANTXV military
qualifications.
TO-204AD (TO-3)
Package
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
• JEDEC registered IN2804 through 1N 2 846B and 1N4557 through 1N4564B numbers.
• Internal solder bond construction.
• Hermetically sealed (welded).
• Zener voltage 3.9 V to 200 V.
• JAN, JANTX, and JANTXV qualifications also available per M IL-PRF-19500/114 on most family
members (see Electrical Characteristics table).
(See Part Nomenclature for all available options).
• Standard polarity is anode to case. Reverse polarity is available.
• RoHS compliant versions available (commercial grade only ) .
APPLICATIONS / BENEFITS
• Regulates voltage over a broad range of operating current and temperature.
• Voltage tolerances of 10%, 5%, 2%, and 1% are available.
• Non-sensitive to ESD per MIL-STD-750 method 1020.
• 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
Junction Temperature
TJ
-65 to +175
ºC
Storage Temperature
TSTG
-65 to +200
ºC
Thermal Resistance Junction to Case @ TC = 30 ºC ±3 ºC
RӨJC
2.0
ºC/W
Average Rated Power Dissipation @ TC ≥ 75 ºC
PM(AV)
50
W
Power Derating @ TC ≥ +75 ºC
0.5
W/ºC
Forward Voltage @ IF = 10A
VF
1.5
V
Solder Temperature @ 10 s max
TSP
260
oC
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 2 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
• CASE: Industry standard TO-3 (TO-204AD), hermetically sealed, 0.052 inch diameter pins.
• FINISH: Solder dipped tin-lead over nickel plated alloy 52. Solderable per MIL-STD-750 method 2026. RoHS compliant matte-
tin plating is also available on commercial grade only.
• POLARITY: Standard polarity units are connected anode to case. Reverse polarity (cathode to case) is indicated by suffix R. In
either example, both pins are common with one another as anode or cathode (see Figure 2).
• WEIGHT: Approximately 15 grams.
• MOUNTING HARDWARE: Consult factory for optional insulator and sheet met al screws.
• See Package Dimensions on last page.
JAN 1N2804 R B e3
Reliability Level*
JAN = JAN Level
JANTX = JANTX Level
JANTXV = JANTXV Level
Blank = Commercial
*(on select part numbers)
JEDEC type number
(see Electrical
Characteristics table)
Polarity
R = reverse polarity
(Cathode to Case)
Blank = standard polarity
(Anode to Case)
RoHS Compli ance
e3 = RoHS Compliant (available
on commerc ial grad e only )
Blank = non-RoHS Compliant
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.
VR
Reverse Voltage: The reverse voltage dc value, no alternating component.
VF
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
V
Z
Zener Voltage: The Zener voltage the device will exhibit at a specified current (I
Z
) in its breakdown region.
ZZT o r 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 superimpos ed on IZT or IZK respectively.
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 3 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
JEDEC
TYPE
NUMBER
(Note 1)
NOMINAL
ZENER
VOLTAGE
VZ @ IZT
ZENER
TEST
CURRENT
(IZT)
MAXIMUM DYNAMIC
IMPEDANCE
(NOTE 2)
MAX DC ZENER
CURRENT
(IZM) @ 75°C
Stud Temp.
(Note 3)
TYPICAL
TEMPERATURE
COEFFICIENT
αVZ
MAX**
REVERSE
CURRENT
IR @ VR
ZZT @ IZT
Z
ZK
@ 1 mA
(IZK)
Volts
mA
Ohms
Ohms
mA
% / ºC
µA
Volts
†1N4557B
†1N4558B
†1N4559B
†1N4560B
†1N4561B
†1N4562B
1N4563B
1N4564B
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
3200
2900
2650
2450
2250
2000
1850
1650
0.16
0.16
0.12
0.12
0.12
0.14
0.16
0.24
400
500
600
650
900
1000
200
100
10,000
9,000
8,000
7,500
7,000
6,500
6,650
6,050
-0.050
-0.035
±0.015
0.035
0.050
0.055
0.053
0.057
150
150
100
20
20
20
10
10
0.5
0.5
1.0
1.0
1.0
2.0
2.0
3.0
†1N2804B
†1N2805B
†1N2806B
†1N2807B
†1N2808B
†1N2809B
6.8
7.5
8.2
9.1
10
11
1850
1700
1500
1370
1200
1100
0.2
0.3
0.4
0.5
0.6
0.8
70
70
70
70
80
80
7,000
6,360
5,800
5,240
4,760
4,330
0.057
0.067
0.070
0.075
0.081
0.085
150
100
50
25
25
10
4.5
5.0
5.4
6.1
6.7
8.4
†1N2810B
†1N2811B
1N2812B
†1N2813B
†1N2814B
1N2815B
12
13
14
15
16
17
1000
960
890
830
780
740
1.0
1.1
1.2
1.4
1.6
1.8
80
80
80
80
80
80
3,970
3,750
3,400
3,170
2,970
2,750
0.079
0.080
0.070
0.082
0.083
0.075
10
10
10
10
10
10
9.1
9.9
10.6
11.4
12.2
13.0
†1N2816B
1N2817B
†1N2818B
†1N2819B
†1N2820B
1N2821B
18
19
20
22
24
25
700
660
630
570
520
500
2.0
2.2
2.4
2.5
2.6
2.7
80
80
80
80
80
80
2,640
2,450
2,380
2,160
1,980
1,850
0.085
0.075
0.086
0.087
0.088
0.080
10
10
10
10
10
10
13.7
14.4
15.2
16.7
18.2
19.0
†1N2822B
†1N2823B
†1N2824B
†1N2825B
†1N2826B
†1N2827B
27
30
33
36
39
43
460
420
380
350
320
290
2.8
3.0
3.2
3.5
4.0
4.5
90
90
90
90
90
90
1,760
1,590
1,440
1,320
1,220
1,000
0.090
0.091
0.092
0.093
0.094
0.095
10
10
10
10
10
10
20.6
22.8
25.1
27.4
29.7
32.7
1N2828B
†1N2829B
1N2830B
†1N2831B
†1N2832B
†1N2833B
45
47
50
51
56
62
280
270
250
245
220
200
4.5
5.0
5.0
5.2
6
7
100
100
100
100
110
120
1,030
1,020
935
930
850
770
0.090
0.095
0.090
0.096
0.096
0.097
10
10
10
10
10
10
34.2
35.8
38.0
38.8
42.6
47.1
†1N2834B
†1N2835B
†1N2836B
†1N2837B
†1N2838B
1N2839B
68
75
82
91
100
105
180
170
150
140
120
120
8
9
11
15
20
25
140
150
160
180
200
210
700
640
580
530
480
430
0.097
0.098
0.098
0.099
0.100
0.090
10
10
10
10
10
10
51.7
56.0
62.2
69.2
76.0
79.8
†1N2840B
†1N2841B
†1N2842B
†1N2843B
†1N2844B
†1N2845B
†1N2846B
110
120
130
150
160
180
200
110
100
95
85
80
68
65
30
40
50
75
80
90
100
220
240
275
400
450
525
600
430
400
370
320
300
260
240
0.100
0.100
0.100
0.100
0.100
0.100
0.100
10
10
10
10
10
10
10
83.6
91.2
98.8
114.0
121.6
136.8
152.0
* JEDEC Regis tered Data. **Not JEDEC Data. † Have JAN, JANTX and JANTXV Qualific at i ons to MIL-PRF-19500/114
See notes on foll owing pag e.
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 4 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
NOTES:
1. The JEDEC type numbers shown (B suffix) have a +/- 5 % tolerance on nominal Zener voltage.
2. Zener voltage (VZ) is measured with junction in thermal equilibrium with 30 °C base temperature. The test currents (IZT) have
been selected so that at nominal voltages the dissipation is a constant 12.5 watts. This results in a nominal junction
temperature rise of 18.75 °C.
3. The Zener impedance is derived from the 60 cyc le 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. Zener impedance is measured at 2 points to ensure a
sharp knee on the breakdown curve and to eliminate unstable units. A curve showing the variation of Zener impedance vs.
Zener current for six representative types is shown in Figure 3. Also see MicroNote 202 for f urther infor mat ion .
4. The values of IZM are calculated for a +/- 5 % tolerance on nominal Zener voltage. Allowance has been made for the rise in
Zener voltage above VZT that results from Zener impedance and the increase in junc tion temperature as power dissipation
approaches 50 watts. In the case of individual diodes, IZM is that value of current that results in a dissipation of 50 watts.
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 5 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
Case Temperature ºC
FIGURE 1
Power Derating Curve
Standard polarity (Anode-to-case) Reverse polarity (cathode to case)
FIGURE 2
Typical circuit connections for anode-to-case and cathode-to-case polarities
Rated Power Dissipation - Watts
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 6 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
IZ – Milliamperes
FIGURE 3
Ty pical Zener Impedance vs Zener Current for Ty pes Shown
IZ – Amps Add Units
FIGURE 4
Ty pical Zener Impedance vs Zener Current for Types Shown
ZT – Zener Impedance
ZZT – Zener Impedance
T4-LDS-0076, Rev. 3 (5/2/13) ©2013 Microsemi Corporation Page 7 of 7
1N2804B – 1N2846RB and
1N4557B – 1N4564RB
NOTES:
1. Dimensions are in inches. Millimeters are given for general information only.
2. These dimen si ons should be measured at poin ts 0.050 inch (1.27 mm) +0.005 inch (+0.13 mm) –0.000 inch (–0.00 mm)
below seating pla ne.
3. The seating plane of the header shall be flat within 0.001 inch (0.03 mm) concave to 0.004 inch (0.10 mm) convex 0.001
inch (0.03 mm) conc ave to 0.006 inch (0.15 mm) convex overall.
4. Pins 1 and 2 are internally connected with an internal jumper.
5. Devices with RB suffix (reverse polarity) have the cathode internally connected to the case.
6. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology.
Dimensions
Ltr
Inches
Millimeters
Notes
Min
Max
Min
Max
CD
-
0.875
-
22.23
CH
0.270
0.380
6.86
9.65
HR
0.495
0.525
12.57
13.34
HR1
0.131
0.188
3.33
4.78
HT
0.060
0.135
1.52
3.43
LD
0.048
0.053
1.22
1.35
LL
0.312
0.500
7.92
12.70
L1
-
0.050
-
1.27
MHD
0.151
0.165
3.84
4.19
MHS
1.177
1.197
29.90
30.40
OL
1.520
1.540
38.61
39.12
OW
0.900
1.10
22.86
27.94
PS
0.420
0.440
10.67
11.18
2
PS1
0.205
0.225
5.21
5.72
2
S1
0.655
0.675
16.64
17.15