
Low Voltage Surface Mount
500 mW Avalanche Diodes
SCOTTSDALE DIVISION
IN5518BUR-1 thru 1N5546BUR-1
(or MLL5518B-1 thru MLL5546B-1)
W
M
.
C
1
DESCRIPTION
APPEARANCE
The 1N5518BUR-1 thru 1N5546BUR-1 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 have an internal-metallurgical-bond
construction is also in JAN, JANTX, and JANTXV military qualifications.
Microsemi also offers numerous other Zener products to meet higher and
lower power applications.
DO-213AA
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
FEATURES APPLICATIONS / BENEFITS
Surface mount equivalent to JEDEC registered
1N5518 thru 1N5546 series
Internal metallurgical bond with the “-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; (e.g.
JANTX1N4099UR-1, JANTXV1N4109CUR-1, etc.)
Nonbonded types also available without the “-1”
suffix for both the axial and surface mount
packages
DO-7 or DO-35 glass body axial-leaded Zener
equivalents also available per JEDEC registration
with part numbers 1N5518 thru 1N5546 on
separate data sheets
MAXIMUM RATINGS
Operating and Storage temperature: -65
o
C to
+175
C
Thermal Resistance: 100
o
C/W junction to end cap,
or 250
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
< 125
C or at ambient T
A
< 50
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)
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-1, etc.
Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively, e.g. 1N5518CUR-1,
1N5518DUR-1, 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
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 on last page
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
Copyright
2003
10-31-2003 REV B