1N5518B thru 1N5546B-1 DO-35
Low Voltage Avalanche Diodes DO-35
SCOTTSDALE DIVISION
DESCRIPTION
The 1N5518 thru 1N5546 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.
These glass axial-leaded DO-35 Zeners are also available with an internal-
metallurgical-bond option by adding a “-1” suffix. This type of bonded Zener
package construction is 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
WWW .
Microsemi
.C
OM
DO-35
(DO-204AH)
FEATURES
•
JEDEC registered 1N5518 thru 1N5546
•
Internal metallurgical bond option available by
adding a “-1” suffix
•
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 level of screening 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 1N5518UR to 1N5546BUR
in DO-213AA package (consult factory for others)
•
DO-7 glass body axial-leaded Zener equivalents are
also available
•
•
•
•
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating
current and temperature range
Guaranteed voltage regulation (∆V
Z
) from I
ZL
to I
ZT
Voltage 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
Minimal capacitance (see Figure 3)
MAXIMUM RATINGS
•
Operating and Storage temperature: -65
º
C to
+175
º
C
•
Thermal Resistance: 250
º
C/W junction to lead at
3/8 (10 mm) lead length from body, or 310
º
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
< 50
o
C 3/8 inch
(10 mm) from body or 0.48 W at T
A
< 25
º
C when
mounted on FR4 PC board as described for thermal
resistance above (see Figure 2 for derating)
•
Forward voltage @200 mA: 1.1 volts
•
Solder Temperatures: 260
º
C for 10 s (max)
MECHANICAL AND PACKAGING
•
•
•
CASE: Hermetically sealed axial-lead glass DO-35
(DO-204AH) 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-35
•
•
•
•
Copyright
2003
10-07-2003 REV A
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-35
Low Voltage Avalanche Diodes DO-35
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-35
Copyright
2003
10-07-2003 REV A
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-35
Low Voltage Avalanche Diodes DO-35
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.
TYPICAL CAPACITANCE IN PICOFARADS
WWW .
Microsemi
.C
OM
At zero volts
Rated Power Dissipation (mW)
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 V
Z
FIGURE 2
– Power Derating Curve
FIGURE 3
Capacitance vs. Zener Voltage
(TYPICAL)
PACKAGE DIMENSIONS
1N5518B - 1N5546B-1, DO-35
FIGURE 4
Zener Diode Characteristics and Symbol Identification
Copyright
2003
10-07-2003 REV A
All dimensions in: INCH
mm
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
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