1N5221UR-1 thru 1N5281BUR-1
(or MLL5221-1 thru MLL5281B-1)
METALLURGICALLY BONDED GLASS
SURFACE MOUNT 500 mW ZENERS
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
The 1N5221BUR-1 thru 1N5281BUR-1 series of 0.5 watt Zener Voltage
Regulators provides a surface mount equivalent to the popular JEDEC
registered 1N5221B to 1N5281B for 2.4 to 200 volts in a metallurgically
bonded configuration. They are available with standard 5%, 10%, or 20%
tolerances as well as tighter tolerances identified by different suffix letters on
the part number. 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: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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Surface mount equivalents to the JEDEC registered
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Regulates voltage over a broad operating
current and temperature range
Selection from 2.4 to 200 V
Standard voltage tolerances are plus/minus 5%
with B suffix identification and 10 % with A suffix
Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (see Figure 3)
1N5221 thru 1N5281B series
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Hermetically sealed surface mount package
Internal metallurgical bond
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers
DO-7 or DO-35 glass body axial-leaded Zener
equivalents also available per JEDEC registration
(see separate data sheet for part numbers 1N5221
thru 1N5281B series
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Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Operating and Storage temperature: -65ºC to +175ºC
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CASE: Hermetically sealed glass DO-213AA
Thermal Resistance: 100ºC/W junction to end cap
and 250ºC/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 TEC < 125oC or ambient temperature TA
< 50ºC when mounted on FR4 PC board as described
for thermal resistance above (see Figure 2 for
derating)
(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
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MARKING: cathode band only
TAPE & REEL option: Standard per EIA-481-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
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Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 seconds (max)
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See package dimensions on last page
Copyright 2002
Microsemi
Page 1
11-10-2003 REV 0
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503