Silicon 1 Watt Zener Diodes
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
8-20-2003 REV B
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N4728AG thru 1N4764AG (Glass)
1N4728AG-1N4764AG
(Glass)
728AG-1N4764AG
(Glass)
DESCRIPTION APPEARANCE
The popular 1N4728AG thru 1N4764AG glass body series of 1.0 watt
Zeners provides voltage regulation in a selection from 3.3 to 100 volts in
5% tolerances with other tighter tolerances also available as identified by
different suffix letters on the part number. These glass encapsulated
Zeners with a G suffix provide hermetic-sealed qualities and higher rated
temperature when required beyond that optionally provided in the same
size DO-41 plastic-body (P suffix) for these JEDEC part numbers. Both of
these package options are available by Microsemi. A variety of other Zener
product offerings and packages are available by Microsemi to meet higher
and lower power or test current applications.
DO-41 or
DO-204AL
Glass
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLICATIONS / BENEFITS
• JEDEC registered 1N4728A to 1N4764A
• 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 available as
SMAJ4728A to SMAJ4764A and MLL4728A to
MLL4764A (consult factory for others)
• Plastic body axial-leaded Zener equivalents are
also available as 1N4728AP to 1N4764AP
• Regulates voltage over a broad operating current
and temperature range
• Extensive voltage selection from 3.3 to 100 V
• Flexible axial-lead mounting terminals
• Standard voltage tolerances are plus/minus 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 per MIL-STD-750 Method 1020
• Hermetically sealed glass body construction
MAXIMUM RATINGS MECHANICAL AND PACKAGING
• Power dissipation at 25ºC: 1.0 watts (also see
derating in Figure 1).
• Operating and Storage temperature: -65ºC to
+175ºC
• Thermal Resistance: 80 ºC/W junction to lead at
3/8 (10 mm) lead length from body, or 140ºC/W
junction to ambient when mounted on FR4 PC
board (1 oz Cu) with 4 mm2 copper pads and
track width 1 mm, length 25 mm
• Steady-State Power: 1.0 watts at TL < 95oC 3/8
inch (10 mm) from body or 1.00 watt at TA < 35ºC
when mounted on FR4 PC board as described
for thermal resistance above (also see Figure 1)
• Forward voltage @200 mA: 1.2 volts (maximum)
• Solder Temperatures: 260 ºC for 10 s (max)
• CASE: Hermetically sealed axial-lead glass package
• TERMINALS: Leads, tin-lead plated solderable per
MIL-STD-750, method 2026
• POLARITY: Cathode indicated by band. Diode to
be operated with the banded end positive with
respect to the opposite end for Zener regulation
• MARKING: Part number
• TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
• WEIGHT: 0.4 grams
• See package dimensions on last page