1N4728UR thru 1N4764AUR,e3
(or MLL4728A thru MLL4764A,e3)
SURFACE MOUNT 1.0 W
GLASS ZENER DIODES
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This surface mountable 1 watt Zener diode series is electrically equivalent to
the 1N4728A thru 1N4764A registration in the DO-41 equivalent package
except that it meets the JEDEC surface mount outline DO-213AB. It is an
ideal selection for applications of high density and low parasitic requirements
for voltage regulation. Standard voltage tolerance is +/- 5% with tighter
tolerances available down to 1%. With its glass hermetic qualities, it may
also be used for high reliability applications when required by a source
control drawing (SCD).
DO-213AB
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
•
Electrically similar to the JEDEC registered 1N4728 thru
1N4764 zener series
•
Regulates voltage over a broad operating current
and temperature range
•
•
Zener voltages available 3.3V to 100V
•
•
•
•
•
•
•
Wide selection from 3.3 to 100 V
Leadless package for surface mounting
Ideal for high density mounting
Standard voltage tolerances are +/- 5% with “A” suffix and
10 % with no suffix identification
•
•
Tight tolerances available in plus or minus 2% or 1% with
C or D suffix respectively
Nonsensitive to ESD
Hermetically sealed glass package
Specified capacitance (see Figure 2)
Inherently radiation hard per MicroNote 050
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.
•
Surface mount equivalents also available as SMAJ4728A
to SMAJ4764A and SMAJ4728A to SMAJ4764A
•
•
RoHS Compliant devices also available by adding e3 suffix
Plastic body axial-leaded Zener equivalents are also
available as 1N4728A to 1N4764A
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
Power dissipation at 25ºC: 1.0 watts (also see derating
in Figure 1).
•
•
CASE: Hermetically sealed DO-213AB glass MELF
TERMINALS: Tin-Lead or RoHS Compliant
annealed matte-Tin plating solderable per MIL-STD-
750, method 2026
•
•
Operating and Storage temperature: -65ºC to +175ºC
Thermal Resistance: 50 ºC/W junction to end cap, or
130ºC/W junction to ambient when mounted on FR4 PC
board (1 oz Cu) with recommended footprint (see last
page)
•
POLARITY: Cathode indicated by band. Diode to
be operated with the banded end positive with
respect to the opposite end for Zener regulation
•
Steady-State Power: 1.00 watts at TEC < 125oC, or 1.00
watts at TA < 45ºC when mounted on FR4 PC board and
recommended footprint as described for thermal
resistance (also see Figure 1)
•
•
MARKING: Cathode band only
TAPE & REEL optional: Standard per EIA-481-B
with 12 mm tape, 1500 per 7 inch reel or 5000 per
13 inch reel (add “TR” suffix to part number)
•
•
Forward voltage @200 mA: 1.2 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
•
•
WEIGHT: 0.05 grams
See package dimensions & recommended mounting
pad on last page
Copyright © 2005
10-18-2005 REV D
Microsemi
Page 1
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