Copyright 2003
11-05-2003 REV A
IMPORTANT: For the most current data, consult MICROSEMI’s website:
The 1N4678 thru 1N4717 series of 0.5 watt Zener Voltage Regulators
provides a selection from 1.8 to 43 volts in standard 5% tolerances as well
as tighter tolerances identified by different suffix letters on the part number.
These glass axial-leaded DO-7 Zeners also have an internal-metallurgical-
bond similar to other military requirements for these packages. Microsemi
also offers numerous other Zener products to meet higher and lower power
applications.
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JEDEC registered 1N4678 thru 1N4717
Internally solder bonded
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 as well as “-1” suffix
Surface Mount available in DO-213AA package
outline by adding a UR or UR-1 (see separate data
sheet for 1N4678UR thru 1N4717UR-1)
DO-35 glass body axial-leaded Zener equivalents
are also available (see separate data sheet)
Operating and Storage temperature: -65
+175
Thermal Resistance: 300
3/8 (10 mm) lead length from body, or 360
junction to ambient when mounted on FR4 PC board
(1 oz Cu) with 4 mm
mm, length 25 mm
Steady-State Power: 0.5 watts at T
(10 mm) from body or 0.417 W at T
mounted on FR4 PC board as described for thermal
resistance (see Figure 2 for derating)
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260
º
C
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
MAXIMUM RATINGS
S C O T T S D A L E D I V I S I O N
FEATURES
2
copper pads and track width 1
º
C/W junction to lead at
º
DESCRIPTION
C for 10 s (max)
A
L
< 25
< 25
º
º
C to
o
C when
º
C 3/8 inch
C/W
Scottsdale Division
Microsemi
500 mW AXIAL-LEADED ZENER DIODES
http://www.microsemi.com
MECHANICAL AND PACKAGING
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1N4678 thru 1N4717-1 DO-7
Regulates voltage over a broad operating
Guaranteed maximum voltage regulation 10 µA to
100 µA
Voltage selection from 1.8 to 43 V
Standard voltage tolerances are plus/minus 5%
Tight tolerances available in plus or minus 2%
Flexible axial-lead mounting terminals
Nonsensitive to ESD per MIL-STD-750 Method 1020
Capacitance also specified (see Figure 3)
Inherently radiation hard as described in Microsemi
MicroNote 050
CASE: Hermetically sealed axial-lead glass DO-7
(DO-204AA) package
TERMINALS: Leads, tin-lead plated solderable per
MIL-STD-750, method 2026
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
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
current and temperature range
with no suffix
or 1% with C or D suffix respectively
APPLICATIONS / BENEFITS
DO-7
(DO-204AA)
APPEARANCE
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