1N4678 thru 1N4717-1 DO-7
500 mW AXIAL-LEADED ZENER DIODES
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
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.
DO-7
(DO-204AA)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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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)
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Regulates voltage over a broad operating
current and temperature range
Guaranteed maximum voltage regulation 10 µA to
100 µA
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Voltage selection from 1.8 to 43 V
Standard voltage tolerances are plus/minus 5%
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
Capacitance also specified (see Figure 3)
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•
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DO-35 glass body axial-leaded Zener equivalents
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are also available (see separate data sheet)
Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Operating and Storage temperature: -65ºC to
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•
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CASE: Hermetically sealed axial-lead glass DO-7
+175ºC
(DO-204AA) package
Thermal Resistance: 300 ºC/W junction to lead at
3/8 (10 mm) lead length from body, or 360ºC/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
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
•
Steady-State Power: 0.5 watts at TL < 25oC 3/8 inch
(10 mm) from body or 0.417 W at TA < 25ºC when
mounted on FR4 PC board as described for thermal
resistance (see Figure 2 for derating)
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MARKING: Part number
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
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WEIGHT: 0.2 grams
See package dimensions on last page
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Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
Copyright 2003
Microsemi
Page 1
11-05-2003 REV A
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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