1N5221UR-1 thru 1N5281BUR-1,e3
(or MLL5221-1 thru MLL5281B-1,e3)
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
1N5221 thru 1N5281B series
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Regulates voltage over a broad operating
current and temperature range
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Hermetically sealed surface mount package
Internal metallurgical bond
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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
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
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Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (see Figure 3)
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RoHS Compliant devices available by adding “e3” suffix
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
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
(SOD80 or MLL34) MELF style package
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)
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FINISH: End caps Tin-Lead or RoHS Compliant
annealed matte-Tin plating solderable per MIL-STD-
750, method 2026
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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)
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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 © 2005
8-29-2005 REV A
Microsemi
Page 1
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503