Silicon 500 mW 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
10-31-2003 REV B
WWW.
Microsemi
. COM
SCOTTSDALE DIVISION
1N746 thru 1N759A, -1 and
1N4370 thru 1N4372A, -1 DO-35
1N746 –759A
1N4370 – 4372A (DO-35)
FEATURES
APPLICATIONS / BENEFITS
• JEDEC registered 1N746 thru 1N759A and 1N4370
thru 1N4372A series
• Internal metallurgical bond option available by adding
a “-1” suffix
• Also available in JAN, JANTX, and JANTXV
qualifications per MIL-PRF-19500/127 by adding the
JAN, JANTX, or JANTXV prefixes to part numbers for
desired level of screening as well as –1” suffix; (e.g.
JANTX1N751A-1, JANTXV1N758C-1, etc.)
• Military Surface Mount equivalents also available in
DO-213AA by adding a UR-1 suffix in addition to the
JAN, JANTX, and JANTXV prefix; e.g.
JANTX1N962BUR-1 (see separate data sheet)
• Commercial Surface Mount equivalents available as
MLL746 to MLL759A and MLL4370 to MLL4372A
including the “-1” suffix in the DO-213AA MELF style
package (consult factory for others)
• DO-7 glass body axial-leaded Zener equivalents are
also available
• Regulates voltage over a broad operating
current and temperature range
• Selection from 2.4 to 12 V
• Standard voltage tolerances are plus/minus 5%
with A suffix identification and 10 % with no suffix
• Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
• Flexible axial-lead mounting terminals
• Nonsensitive to ESD per MIL-STD-750 Method
1020
• Minimal capacitance (see Figure 3)
• Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
• Operating and Storage temperature: -65
º
C to +175
º
C
• Thermal Resistance: 250
º
C/W junction to lead at 3/8
(10 mm) lead length from body, or 310
º
C/W junction to
ambient when mounted on FR4 PC board (1 oz Cu)
with 4 mm
2
copper pads and track width 1 mm, length
25 mm
• Steady-State Power: 0.5 watts at T
L
< 50
o
C 3/8 inch
(10 mm) from body or 0.48 W at T
A
< 25
º
C when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure1)
• Forward voltage @200 mA: 1.1 volts
• Solder Temperatures: 260
º
C for 10 s (max)
• CASE: Hermetically sealed axial-lead glass
DO-35 (DO-204AH) 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: 0.2 grams
• See package dimensions on last page
DESCRIPTION
APPEARANCE
The popular 1N746 thru 1N759A and 1N4370 thru 1N4372A series of 0.5
watt Zener Voltage Regulators provides a selection from 2.4 to 12 volts in
standard 5% or 10% tolerances as well as tighter tolerances identified by
different suffix letters on the part number. These glass axial-leaded DO-35
Zeners are also available with an internal-metallurgical-bond option by
adding a “-1” suffix. These are also available in JAN, JANTX, and JANTXV
military qualifications. Microsemi also offers numerous other Zener
products to meet higher and lower power applications.
DO-35
(DO-204AH)
IMPORTANT: For the most current data, consult
MICROSEMI’s
website: http://www.microsemi.com
