1N5518B thru 1N5546B-1 DO-7
Low Voltage Avalanche
500 mW Zener Diodes DO-7
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
DESCRIPTION
The 1N5518B thru 1N5546B series of 0.5 watt Zener Voltage Regulators
provides a selection from 3.3 to 33 volts in standard 5% tolerances as well as
tighter tolerances identified by different suffix letters on the part number. The
DO-7 packaging offers a “straight-through” soldered internal connection with
a larger active die element than otherwise provided in the smaller DO-35
package if needed. This DO-7 package option is also available in JAN,
JANTX, and JANTXV military qualifications to MIL-PRF-19500/437.
Microsemi also offers numerous other Zener products to meet higher and
lower power applications.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
DO-7
(DO-204AA)
FEATURES
•
•
•
JEDEC registered
1N5518 thru 1N5546 series
Internally solder bonded
Also available in JAN, JANTX, and JANTXV
qualifications per MIL-PRF-19500/437 by adding
the JAN, JANTX, or JANTXV prefixes to part
numbers for desired screening level as well as “-
1” suffix: e.g. JANTX1N5518B-1,
JANTXV1N5546D-1, etc.
Military Surface Mount available in DO-213AA
package outline by adding a UR-1 suffix in
addition to the JAN, JANTX, and JANTXV prefix;
e.g. JANTX1N5518BUR-1 (see separate data
sheet)
Commercial Surface Mount also available in
separate data sheet as 1N5518BUR to
1N5546BUR in DO-213AA package (consult
factory for others)
Smaller DO-35 glass body axial-leaded Zener
equivalents are also available
•
•
•
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current
and temperature range
Low noise density
Extensive selection from 3.3 to 33 V
Standard voltage tolerances are plus/minus 5%
with a “B” 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
Capacitance also specified (see Figure 3)
Inherently radiation hard as described in
Microsemi MicroNote 050
•
•
•
MAXIMUM RATINGS
•
•
Operating and Storage temperature: -65
º
C to
+175
º
C
Thermal Resistance: 300
º
C/W junction to lead at
º
3/8 (10 mm) lead length from body, or 360 C/W
junction to ambient when mounted on FR4 PC
board (1 oz Cu) with 4 mm
2
copper pads and
track width 1 mm, length 25 mm
Steady-State Power: 0.5 watts at T
L
< 25
o
C 3/8
inch (10 mm) from body or 0.417 W at T
A
< 25
º
C
when mounted on FR4 PC board as described for
thermal resistance above (also see Figure 2)
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260
º
C for 10 s (max)
•
•
•
MECHANICAL AND PACKAGING
CASE: Hermetically sealed axial-lead glass DO-
7 (DO-204AA) package
TERMINALS: Leads, tin-lead plated solderable
per MIL-STD-750, method 2026
POLARITY: Cathode indicated by band where
diode is 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)
WEIGHT: 0.2 grams
See package dimensions on last page
1N5518B-1N5546B-1, DO-7
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Copyright
2003
11-12-2003 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N5518B thru 1N5546B-1 DO-7
Low Voltage Avalanche
500 mW Zener Diodes DO-7
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
ELECTRICAL CHARACTERISTICS
JEDEC
TYPE
NUMBER
(Note 1)
NOMINAL
ZENER
VOLTAGE
TEST
CURRENT
MAX. ZENER
IMPEDANCE
B-C-D SUFFIX
(T
A
= 25
o
C unless otherwise noted. Based on DC measurements at
thermal equilibrium;
V
F
= 1.1 Max @ IF = 200 mA for all types.)
MAX. REVERSE LEAKAGE
CURRENT (Note 4)
V
Z
@ I
ZT
(Note 2)
VOLTS
I
ZT
mAdc
20
20
20
20
10
5.0
3.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Z
ZT
@ I
ZT
(Note 3)
OHMS
26
24
22
18
22
26
30
30
30
35
40
45
60
80
90
90
100
100
100
100
100
100
100
100
100
100
100
100
100
I
R
µAdc
5.0
3.0
1.0
3.0
2.0
2.0
2.0
1.0
1.0
0.5
0.5
0.1
0.05
0.05
0.05
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
V
R
– VOLTS
NON & A-
SUFFIX
0.90
0.90
0.90
1.0
1.5
2.0
3.0
4.5
5.5
6.0
6.5
7.0
8.0
9.0
9.5
10.5
11.5
12.5
13.0
14.0
15.0
16.0
17.0
18.0
20.0
21.0
23.0
24.0
28.0
B-C-D
SUFFIX
1.0
1.0
1.0
1.5
2.0
2.5
3.5
5.0
6.2
6.8
7.5
8.2
9.1
9.9
10.8
11.7
12.6
13.5
14.4
15.3
16.2
17.1
18.0
19.8
21.6
22.4
25.2
27.0
29.7
B-C-D
SUFFIX
MAXIMUM
DC ZENER
CURRENT
(Note 5)
mAdc
115
105
98
88
81
75
68
61
56
51
46
42
38
35
32
29
27
25
24
22
21
20
19
17
16
15
14
13
12
B-C-D SUFFIX
MAX. NOISE
DENSITY
AT I
Z
= 250µA
REGULATION
FACTOR
(Note 6)
∆V
Z
LOW V
Z
CURRENT
(Note 6)
I
ZL
I
ZM
N
D
µV/ √Hz
0.5
0.5
0.5
0.5
0.5
0.5
1.0
1.0
1.0
2.0
4.0
4.0
4.0
5.0
10
15
20
20
20
20
20
20
20
20
20
20
20
20
20
VOLTS
0.90
0.90
0.85
0.75
0.60
0.65
0.30
0.20
0.10
0.05
0.05
0.05
0.10
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.20
0.25
0.30
0.35
0.40
0.45
0.50
mAdc
2.0
2.0
2.0
2.0
1.0
0.25
0.25
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
1N5518
1N5519
1N5520
1N5521
1N5522
1N5523
1N5524
1N5525
1N5526
1N5527
1N5528
1N5529
1N5530
1N5531
1N5532
1N5533
1N5534
1N5535
1N5536
1N5537
1N5538
1N5539
1N5540
1N5541
1N5542
1N5543
1N5544
1N5545
1N5546
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
14.0
15.0
16.0
17.0
18.0
19.0
20.0
22.0
24.0
25.0
28.0
30.0
33.0
NOTES:
1. TOLERANCE AND VOLTAGE DESIGNATION –
The JEDEC type numbers shown are +/-20% with guaranteed limits for only V
Z
, I
R
, and V
F
. Units with A suffix are +/-10% with
guaranteed limits for V
Z
, I
R
, and V
F
. Units with guaranteed limits for all six parameters are indicated by a B suffix for +/-5.0% units,
C suffix for +/-2.0% and D suffix for +/-1.0%.
2. ZENER VOLTAGE (V
Z
) MEASUREMENT –
o
Nominal zener voltage is measured with the device junction in thermal equilibrium with ambient temperature of 25 C.
3. ZENER IMPEDANCE (Z
Z
) MEASUREMENT –
The zener impedance 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 (I
ZT
) is superimposed on I
ZT
.
4. REVERSE LEAKAGE CURRENT (I
R
) –
Reverse leakage currents are guaranteed and are measured at V
R
as shown on the table.
5. MAXIMUM REGULATOR CURRENT (I
ZM
) –
The maximum current shown is as shown in MIL-PRF-19500/437.
6. MAXIMUM REGULATION FACTOR (∆V
Z
) –
∆V
Z
is the maximum difference between V
Z
at I
ZT
and V
Z
at I
ZL
measured with the device junction in thermal equilibrium.
1N5518B-1N5546B-1, DO-7
Copyright
2003
11-12-2003 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
1N5518B thru 1N5546B-1 DO-7
Low Voltage Avalanche
500 mW Zener Diodes DO-7
SCOTTSDALE DIVISION
CIRCUIT AND GRAPHS
Noise density, (N
D
) is specified in microvolts rms per
square-root-Hertz (µV/
√Hz).
Actual measurement is
performed using a 1 kHz to 3 kHz frequency bandpass
o
filter with a constant Zener test current (I
ZT
) at 25 C
ambient temperature.
WWW .
Microsemi
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Pd, Maximum Power Dissipation (mW)
Typical Capacitance in PicoFarads
At zero volts
At –2 volts (VR)
FIGURE 1
Noise Density Measurement Circuit
T
L
– Lead Temperature ( C) 3/8” from body
or T
A
on FR4 PC Board
o
Zener Voltage
FIGURE 2
– Power Derating Curve
FIGURE 3
Capacitance vs. Zener Voltage
(TYPICAL)
PACKAGE DIMENSIONS
1N5518B-1N5546B-1, DO-7
FIGURE 4
Zener Diode Characteristics and Symbol Identification
Copyright
2003
11-12-2003 REV B
All dimensions in: INCH
mm
Page 3
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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