1N989C Datasheet

IC型號：
1N989C
PDF描述：
Silicon 500 mW Zener Diodes
文件大?。?/label>
215.68KB
PDF頁數(shù)：
3頁
芯片廠家：
MICROSEMI

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1N957B, -1 thru 1N992B, -1 DO-35

Silicon 500 mW Zener Diodes

SCOTTSDALE DIVISION

DESCRIPTION

The popular 1N957B thru 1N992B series of 0.5 watt Zener Voltage

Regulators provides a selection from 6.8 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 with an internal-metallurgical-bond option by adding a 鈥?1鈥?/div>

suffix. The 1N962B-1 thru 1N992B-1 are available in JAN, JANTX, and

JANTXV military qualifications. Microsemi also offers numerous other

Zener products to meet higher and lower power applications.

IMPORTANT:

For the most current data, consult

MICROSEMI鈥檚

website:

http://www.microsemi.com

APPEARANCE

WWW .

Microsemi

DO-35

(DO-204AH)

FEATURES

鈥?/div>

JEDEC registered 1N957B(-1) to 1N992B(-1) series

鈥?/div>

Internal metallurgical bond option available by

adding a 鈥?1鈥?suffix

鈥?/div>

Also available in JAN, JANTX, and JANTXV

qualifications per MIL-PRF-19500/117 by adding the

JAN, JANTX, or JANTXV prefixes to part numbers

for desired level of screening as well as 鈥?1鈥?suffix;

(e.g. JANTX1N962B-1, JANTXV1N986C-1, etc.)

鈥?/div>

Military Surface Mount equivalents also available in

DO-213AA by adding a UR-1 suffix in addition to the

JAN, JANTX, and JANTXV prefix; e.g.

JANTX1N962BUR-1 (see separate data sheet)

鈥?/div>

Commercial Surface Mount equivalents available as

MLL957B to MLL992B or with 鈥?1鈥?suffix for bonded

in the DO-213AA MELF style package (consult

factory for others)

鈥?/div>

DO-7 glass body axial-leaded Zener equivalents are

also available

鈥?/div>

APPLICATIONS / BENEFITS

Regulates voltage over a broad operating

current and temperature range

Extensive selection from 6.8 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 per MIL-STD-750 Method

1020

Minimal capacitance (see Figure 3)

Inherently radiation hard as described in

Microsemi MicroNote 050

MAXIMUM RATINGS

鈥?/div>

Operating and Storage temperature: -65

潞

C to

+175

潞

鈥?/div>

Thermal Resistance: 250

潞

C/W junction to lead at 3/8

(10 mm) lead length from body, or 310

潞

C/W junction

to ambient when mounted on FR4 PC board (1 oz

Cu) with 4 mm

copper pads and track width 1 mm,

length 25 mm

鈥?/div>

Steady-State Power: 0.5 watts at T

< 50

C 3/8 inch

(10 mm) from body or 0.48 W at T

< 25

潞

C when

mounted on FR4 PC board as described for thermal

resistance above (also see Figure1)

鈥?/div>

Forward voltage @200 mA: 1.1 volts (maximum) for

1N957B 鈥?1N985B and 1.3 V for 1N985 鈥?1N992B

鈥?/div>

Solder Temperatures: 260

潞

C for 10 s (max)

MECHANICAL AND PACKAGING

鈥?/div>

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. 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 鈥淭R鈥?suffix to part number)

WEIGHT: 0.2 grams

See package dimensions on last page

1N957B 鈥?992B

(DO-35)

鈥?/div>

錚?/div>

2003

10-31-2003 REV B

Microsemi

Scottsdale Division

8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

Page 1

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