SCOTTSDALE DIVISION
1N5985 thru 1N6031-1, e3 DO-35
Axial-Leaded 500 mW Zener Diodes
DESCRIPTION
The popular 1N5985 thru 1N6031 series of 0.5 watt Zener Voltage Regulators
provides a selection from 2.4 to 200 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 in various military
screening levels by adding a prefix identifier as described in the Features
section. 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 1N5985 to 1N6031
• Similar to operating current conditions of the BZX55
Pro Electron series of Zener products in Europe
• Internal bonds optionally available with “-1” suffix
• RoHS Compliant devices available by adding “e3” suffix
• 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 with “-1” suffix.
• Surface mount equivalents available as MLL5985 to
MLL6031 in the DO-213AA MELF style package
including “-1” suffix options (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
• Extensive selection from 2.4 to 200 V
• Standard voltage tolerances are plus/minus 5% with
B suffix, 10 % with A suffix identification
• Tight tolerances available in plus or minus 2% or
1% with C or D suffix respectively
• Flexible axial-lead mounting terminals
• Nonsensitive to ESD (MIL-STD-750 Method 1020)
• Minimal capacitance (see Figure 2)
• Inherently radiation hard as described in Microsemi
MicroNote 050
MAXIMUM RATINGS
• Power dissipation at 25ºC: 0.5 watts (also see derating
in Figure 1).
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 250 ºC/W junction to lead at 3/8
(10 mm) lead length from body, or 310ºC/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 TL < 50oC 3/8 inch
(10 mm) from body or 0.48 W at TA < 25ºC when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure1)
• Forward voltage @200 mA: 1.1 volts (maximum)
• Solder Temperatures: 260 ºC for 10 s (max)
MECHANICAL AND PACKAGING
• CASE: Hermetically sealed axial-lead glass DO-35
(DO-204AH) package
• TERMINALS: Tin-lead or RoHS Compliant matte-
Tin plating 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
Copyright © 2006
5-09-2006 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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