1N4981US Microsemi Corporation, 1N4981US Datasheet

1N4981US

Manufacturer Part Number

1N4981US

Description

E_SQ._MELF/ZENER VOLTAGE REGULATOR DIODE

Manufacturer

Microsemi Corporation

Datasheets

1.1N5959US.pdf (4 pages)

2.1N4971.pdf (4 pages)

Specifications of 1N4981US

Pack_quantity

Comm_code

85411000

Lead_time

168

Current page: 1 of 4
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4-27-2007 REV C

IMPORTANT: For the most current data, consult MICROSEMI’s website:

MIL-PRF-19500/356 and is ideal for high-reliability applications where a

failure cannot be tolerated.

Voltage Regulators are hermetically sealed with voidless-glass construction

using an internal metallurgical bond. It includes Zener selections from 3.3

to 390 volts in standard 5% tolerances as well as tighter tolerances

identified by different suffix letters on the part number. They are also

available in axial-leaded packages for thru hole mounting by deleting the

“US” suffix (see separate data sheet for 1N4954 thru 1N4996, 1N5968 thru

1N5969, and 1N6632 thru 1N6637). Microsemi also offers numerous other

Zener products to meet higher and lower power ratings in both thru-hole

and surface mount packages.

•

his surface mount Zener Voltage Regulator series is military qualified to

Thermal Resistance: 7

1N4954US thru 1N4996US and 10

1N6632US thru 1N6637US as well as 1N5968US

thru 1N5969US

Operating Temperature: -65

Storage Temperature: -65

Power Dissipation: 5 Watts @ T

Thermal Impedance at 10 ms: 1.8

Forward Voltage: 1.50 V at 1.0 A

Popular JEDEC registered series

Voidless hermetically sealed glass package

Triple-layer passivation

Internal “Category I” Metallurgical bonds for

1N4954US thru 1N4996US, and “Category III” for

1N6632US thru 1N6637US as well as 1N5968US

thru 1N5959US

JAN, JANTX, JANTXV, and JANS available per MIL-

PRF-19500/356

Axial-leaded equivalents (see separate data sheet for

1N4954 thru 1N4996, 1N6632 thru 1N6637 and

1N5968 thru 1N5969)

derate linearly at 0.1 W/

zero at 175

1N4954US thru 1N4996US, and 3.0

the 1N6632US thru 1N6637US & 1N5968US thru

1N5969US

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

C/W junction to end cap for

C above T

C to +175

DESCRIPTION

C to +175

These industry-recognized 5 Watt Zener

= 125

C/W for

C/W for both

= 125

C and

Scottsdale Division

C to

Microsemi

1N4954US thru 1N4996US, 1N5968US thru

1N5969US, and 1N6632US thru 1N6637US

Surface Mount 5 WATT GLASS ZENER

VOIDLESS-HERMETICALLY-SEALED

http://www.microsemi.com

•

TERMINATIONS: End caps are Copper with Tin/Lead

MARKING: None

POLARITY: Cathode indicated by band

Tape & Reel option: Standard per EIA-481-B

Weight: 539 mg

Regulates voltage over a broad operating current and

Extensive selection from 3.3 to 390 V

Standard voltage tolerances are plus/minus 5% with

Tight tolerances available in plus or minus 2% or 1%

Extremely robust construction

Nonsensitive to ESD per MIL-STD-750 Method 1020

Inherently radiation hard as described in Microsemi

CASE: Hermetically sealed voidless hard glass with

Tungsten slugs

(Sn/Pb) finish. Note: Previous inventory had solid

Silver end caps with Tin/Lead (Sn/Pb) finish.

temperature range

no suffix

with C or D suffix respectively

MicroNote 050

MECHANICAL AND PACKAGING

APPLICATIONS / BENEFITS

APPEARANCE

“E” Package

(or “D-5B”)

Page 1

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