1N5518B Datasheet, PDF (1/3 Pages) Microsemi Corporation – Low Voltage Avalanche 500 mW Zener Diodes DO-35

SCOTTSDALE DIVISION
1N5518B thru 1N5546B-1 DO-35
Low Voltage Avalanche
500 mW Zener Diodes DO-35
DESCRIPTION
The 1N5518 thru 1N5546 series of 0.5 watt Zener Voltage Regulators
provides a selection from 3.3 to 33 volts in standard 5% 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. This type of bonded Zener
package construction is available in JAN, JANTX, and JANTXV military
qualifications to MIL-PRF-19500/437. Microsemi also offers numerous other
Zener products to meet higher and lower power applications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
APPEARANCE
DO-35
(DO-204AH)
FEATURES
• JEDEC registered 1N5518 thru 1N5546
• Internal metallurgical bond option available by
adding a “-1” suffix
• Also available in JAN, JANTX, and JANTXV
qualifications per MIL-PRF-19500/437 by adding the
JAN, JANTX, or JANTXV prefixes to part numbers
for desired level of screening as well as –1” suffix;
(e.g. JANTX1N5518B-1, JANTXV1N5546D-1, etc.)
• Military Surface Mount available in DO-213AA
package outline by adding a UR-1 suffix in addition
to the JAN, JANTX, and JANTXV prefix; e.g.
JANTX1N5518BUR-1 (see separate data sheet)
• Commercial Surface Mount also available in
separate data sheet as 1N5518UR to 1N5546BUR
in DO-213AA package (consult factory for others)
• DO-7 glass body axial-leaded Zener equivalents are
also available
APPLICATIONS / BENEFITS
• Regulates voltage over a broad operating
current and temperature range
• Guaranteed voltage regulation (∆V_Z) from I_ZL to I_ZT
• Voltage selection from 3.3 to 33 V
• Standard voltage tolerances are plus/minus 5%
with a “B” 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
• Operating and Storage temperature: -65^ºC to
+175^ºC
• Thermal Resistance: 250 ^ºC/W junction to lead at
3/8 (10 mm) lead length from body, or 310^ºC/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: 0.5 watts at T_L < 50^oC 3/8 inch
(10 mm) from body or 0.48 W at T_A < 25^ºC when
mounted on FR4 PC board as described for thermal
resistance above (see Figure 2 for derating)
• Forward voltage @200 mA: 1.1 volts
• Solder Temperatures: 260 ^ºC for 10 s (max)
MECHANICAL AND PACKAGING
• 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 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
Copyright  2003
11-12-2003 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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