SCOTTSD A L E DIVISION
1N4678UR thru 1N4717UR
(or MLL4678 thru MLL4717)
W
.Mi
cr
os
em
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.C
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1N40
99
UR–
1N4
135
UR
1N46
14
UR
–
1N46
27
UR
GLASS SURFACE MOUNT 0.5 WATT
ZENERS
DESCRIPTION
APPEARANCE
The 1N4678UR thru 1N4717UR series of 0.5 watt glass surface mount
DO-213AA Zener voltage regulators provides selection from 1.8 to 43 volts
in standard 5% tolerances as well as tighter tolerances at a very low test
current of 50 A. These are also available with an internal-metallurgical-
bond option by adding a “-1” suffix (see separate data sheet) including
military upgrade screening options. Microsemi also offers numerous other
Zener products to meet higher and lower power applications.
DO-213AA
FEATURES
APPLICATIONS / BENEFITS
Surface mount equivalent to JEDEC registered
1N4678 thru 1N4717 series
Internal metallurgical bond option available by
adding a “-1” suffix (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 sheet for part numbers 1N4678
thru 1N4717 series
Regulates voltage over a broad operating current and
temperature range
Extensive selection from 1.8 to 43 V
Standard voltage tolerances are plus/minus 5% with
no suffix
Tight tolerances available in plus or minus 2% or 1%
with additional C or D suffix respectively
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
MECHANICAL AND PACKAGING
Operating and Storage temperature: -65C to
+175
C
Thermal Resistance: 150C/W junction to end cap
and 300
C/W junction to ambient when mounted on
FR4 PC board (1 oz Cu) with recommended footprint
(see last page Figure 1)
Steady-State Power: 0.5 watts at end cap
temperature TEC < 100
oC or ambient temperature TA
< 25
C when mounted on FR4 PC board as
described for thermal resistance above (see Figure
2 for derating)
Forward voltage @100 mA: 1.5 volts (max)
Solder Temperatures: 260 C for 10 s (max)
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-B 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
2002
3-12-04 REV A