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 © 2005
10-18-2005 REV C
WWW.Microsemi .COM
SCOTTSDALE DIVISION
1N4728AG thru 1N4764AG, e3 (Glass)
1N4728AG-1N4764AG,e3
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 including RoHS
Compliant devices with an “e3” suffix. 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 APPLIC ATIONS / BENEFITS
• JEDEC registered 1N4728A to 1N476 4A
• 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 MLL476 4A (consult
factory for others)
• Plastic body axial-leaded Zener equivalents are als o
available as 1N4728AP to 1N4764AP
• RoHS Compliant devices available by adding “e3” suffix
• Regulates voltage over a broad op erating 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 identific ation
• 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 RAT ING S 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 le ad 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 F igure 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: Tin-Lead (Sn/Pb) or RoHS Compliant
annealed matte-Tin 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 l ast page
