Low Voltage Avalanche

500 mW Zener Diodes DO-35

SCOTTSD A L E DIVISION

1N5518B thru 1N5546B-1 DO-35

DESCRIPTION

APPEARANCE

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.

DO-35

(DO-204AH)

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

FEATURES

APPLICATIONS / BENEFITS

• 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

• Regulates voltage over a broad operating

current and temperature range

• 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

MECHANICAL AND PACKAGING

+175

3/8 (10 mm) lead length from body, or 310

junction to ambient when mounted on FR4 PC board

(1 oz Cu) with 4 mm

mm, length 25 mm

mounted on FR4 PC board as described for thermal

resistance above (see Figure 2 for derating)

• Forward voltage @200 mA: 1.1 volts

• 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

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

11-12-2003 REV B