1N5518BUR thru 1N5546BUR
(or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount
500 mW Avalanche Diodes
DESCRIPTION
The 1N5518BUR thru 1N5546BUR series of 0.5 watt glass surface mount
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 are also available with an internal-
metallurgical-bond option by adding a “-1” suffix (see separate data sheet)
including JAN, JANTX, and JANTXV military qualifications. Microsemi also
offers numerous other Zener products to meet higher and lower power
applications.
APPEARANCE
WWW .
Microsemi
.C
OM
DO-213AA
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
FEATURES
•
•
Surface mount equivalent to JEDEC registered
1N
5518 thru 1N5546 series
Internally metallurgical bond option available by
adding “-1” suffix that also includes JAN, JANTX,
and JANTXV qualifications per MIL-PRF-19500/437
(see separate data sheet for same part numbers
with “-1” suffix
DO-7 or DO-35 glass body axial-leaded Zener
equivalents also available per JEDEC registration
(see separate data sheets for part numbers 1N5518
thru 1N5546 DO-7 and DO-35
•
•
•
•
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current
and temperature range
Extensive selection from 3.3 to 33 V
Standard voltage tolerances are plus/minus 5% with
a “B” suffix, e.g. 1N5518BUR, etc.
Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively, e.g. 1N5518CUR,
1N5518DUR, etc.
Hermetically sealed surface mount package
Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (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: 150
º
C/W junction to end cap
and 300
º
C/W junction to ambient when mounted on
FR4 PC board (1 oz Cu) with recommended footprint
(see last page)
Steady-State Power: 0.5 watts at end cap
temperature T
EC
< 100
º
C or ambient temperature 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 (maximum)
Solder Temperatures: 260
º
C for 10 s (max)
MECHANICAL AND PACKAGING
•
•
•
CASE: Hermetically sealed glass DO-213AA
(SOD80 or MLL34) MELF style package
TERMINALS: End caps 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: cathode band only
TAPE & REEL option: Standard per EIA-481-1-A
with 12 mm tape, 2000 per 7 inch reel or 5000 per
13 inch reel (add “TR” suffix to part number)
WEIGHT: 0.04 grams
See package dimensions and recommended pad
layout on last page
•
•
•
1N5518BUR – 1N5546BUR
•
•
•
•
Copyright
2003
10-13-2003 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
1N5518BUR thru 1N5546BUR
(or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount
500 mW Avalanche Diodes
WWW .
Microsemi
.C
OM
ELECTRICAL CHARACTERISTICS
JEDEC
TYPE
NUMBER
(Note 1 and
Note 7)
NOMINAL
ZENER
VOLTAGE
TEST
CURRENT
(T
A
= 25
o
C unless otherwise noted. Based on DC measurements at
MAX. REVERSE CURRENT
(Note 4)
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)
LOW V
Z
CURRENT
(Note 6)
thermal equilibrium;
V
F
= 1.1 Max @ IF = 200 mA for all types.)
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
MAX. ZENER
IMPEDANCE
B-C-D SUFFIX
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
∆V
Z
I
ZL
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
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
1N5518UR
1N5519UR
1N5520UR
1N5521UR
1N5522UR
1N5523UR
1N5524UR
1N5525UR
1N5526UR
1N5527UR
1N5528UR
1N5529UR
1N5530UR
1N5531UR
1N5532UR
1N5533UR
1N5534UR
1N5535UR
1N5536UR
1N5537UR
1N5538UR
1N5539UR
1N5540UR
1N5541UR
1N5542UR
1N5543UR
1N5544UR
1N5545UR
1N5546UR
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 without a suffix letter prior to the UR are +/-20% with guaranteed limits for only V
Z
, I
R
, and V
F
.
Units with A suffix prior to the UR 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% prior to the UR.
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 CURRENT (I
R
) –
Reverse 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.
7. PART NUMBER –
These may be ordered as either 1N5518UR thru 1N5546UR or as MLL5518 thru MLL5546 part numbers. For JAN, JANTX,
or JANTXV military types, see separate data sheet for the 1N5518UR-1 thru 1N5546UR-1 part numbers.
1N5518BUR – 1N5546BUR
Copyright
2003
10-13-2003 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
1N5518BUR thru 1N5546BUR
(or MLL5518B thru MLL5546B)
SCOTTSDALE DIVISION
Low Voltage Surface Mount
500 mW Avalanche Diodes
GRAPHS and CIRCUIT
P
d
Rated Power Dissipation (mW)
Noise density, (N
D
) is specified in
microvolt-rms per square-root-hertz.
Actual measurement is performed
using a 1 kHz to 3 kHz frequency
bandpass filter at a constant Zener
o
test current (I
ZT
) AT 25 C ambient
temperature.
WWW .
Microsemi
.C
OM
T
EC
T
A
T
EC
, End Cap Temperature ( C) or T
A
Ambient temperature on FR4 PC board
o
FIGURE 2
Power Derating Curve
FIGURE 1
Noise Density
Measurement Circuit
Typical Capacitance in Picofarads (pf)
FIGURE 3
Zener Voltage V
Z
Capacitance vs. Zener Voltage (Typical)
FIGURE 4
Zener Diode Characteristics and Symbol Identification
1N5518BUR – 1N5546BUR
PACKAGE DIMENSIONS
DIM
A
B
C
INCHES
MIN
MAX
0.063
0.067
0.130
0.146
0.016
0.022
MILLIMETERS
MIN
MAX
1.60
1.70
3.30
3.70
0.41
0.55
A
B
C
PAD LAYOUT
INCHES
.200
.055
.080
mm
5.08
1.40
2.03
Page 3
Copyright
2003
10-13-2003 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
PCB Design
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