1N989A

1N989A Datasheet

1N957B, -1 thru 1N992B, -1, e3 DO-35 Silicon 500 mW Zener Diodes

Part	Datasheet
1N989A	1N989A (pdf)

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PDF Datasheet Preview
.COM SCOTTSDALE DIVISION 1N957B, -1 thru 1N992B, -1, e3 DO-35 Silicon 500 mW Zener Diodes The popular 1N957B thru 1N992B series of watt Zener Voltage Regulators provides a selection from 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 optionally available with an internal-metallurgical-bond option by adding a “-1” suffix as well as RoHS Compliant by adding an “e3” suffix. Microsemi also offers numerous other Zener products to meet higher and lower power applications. IMPORTANT For the most current data, consult MICROSEMI’s website: APPEARANCE DO-35 DO-204AH • JEDEC registered 1N957B -1 to 1N992B -1 series • Internal metallurgical bond option available by adding a “-1” suffix similar to military product • Surface Mount equivalents available as MLL957B to MLL992B or with “-1” suffix for bonded in the DO-213AA MELF style package consult factory for others • RoHS Compliant devices available by adding “e3” suffix • 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 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 • 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 watts at TL < 50oC 3/8 inch 10 mm from body or W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above also see Figure1 • Forward voltage mA volts maximum for 1N957B 1N985B and V for 1N985 1N992B • 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 Sn/Pb or RoHS Compliant annealed 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 grams • See package dimensions on last page 1N957B 992B, e3 DO-35 Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, 480 941-6300, Fax 480 947-1503 .COM SCOTTSDALE DIVISION 1N957B, -1 thru 1N992B, -1, e3 DO-35 Silicon 500 mW Zener Diodes ELECTRICAL CHARACTERISTICS* 25oC JEDEC TYPE NUMBER Note 1 NOMINAL ZENER VOLTAGE Note 2 VOLTS

PDF Datasheet Preview

.COM

SCOTTSDALE DIVISION
1N957B, -1 thru 1N992B, -1, e3 DO-35 Silicon 500 mW Zener Diodes

The popular 1N957B thru 1N992B series of watt Zener Voltage Regulators provides a selection from 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 optionally available with an internal-metallurgical-bond option by adding a “-1” suffix as well as RoHS Compliant by adding an “e3” suffix. Microsemi also offers numerous other Zener products to meet higher and lower power applications.

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

APPEARANCE

DO-35 DO-204AH
• JEDEC registered 1N957B -1 to 1N992B -1 series
• Internal metallurgical bond option available by adding a
“-1” suffix similar to military product
• Surface Mount equivalents available as MLL957B to

MLL992B or with “-1” suffix for bonded in the DO-213AA MELF style package consult factory for others
• RoHS Compliant devices available by adding “e3” suffix
• 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 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
• 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 watts at TL < 50oC 3/8 inch 10 mm from body or W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above also see Figure1
• Forward voltage mA volts maximum for 1N957B 1N985B and V for 1N985 1N992B
• 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 Sn/Pb or RoHS Compliant annealed 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 grams
• See package dimensions on last page
1N957B 992B, e3 DO-35

Microsemi

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

SCOTTSDALE DIVISION
1N957B, -1 thru 1N992B, -1, e3 DO-35 Silicon 500 mW Zener Diodes

ELECTRICAL CHARACTERISTICS* 25oC

JEDEC TYPE NUMBER Note 1

NOMINAL ZENER

VOLTAGE Note 2

VOLTS

More datasheets: 1N973B | 1N965B | 1N987B | 1N965A | 1N967A | 1N978A | 1N985B | 1N988B | 1N989B | 1N982B

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Datasheet ID: 1N989A 648582