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1N4678 - Microsemi Corporation

Description: ZENER DIODE

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Symbol
1N4678 - Microsemi Corporation - PCB symbol
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PCB Footprints
1N4678 - Microsemi Corporation PCB footprint - Diodes, Axial Diameter Horizontal Mounting - Diodes, Axial Diameter Horizontal Mounting - DO-35_2022
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3D Models
1N4678 - Microsemi Corporation - 3D model - Diodes, Axial Diameter Horizontal Mounting - DO-35_2022
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1N4678 Details

  • Manufacturer Part Number:

    1N4678

  • Part Life Cycle Code:

    Transferred

  • Part Package Code:

    DO-7

  • Package Description:

    HERMETIC SEALED, GLASS, DO-7, 2 PIN

  • Pin Count:

    2

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.10.00.50

  • Manufacturer:

    Microsemi Corporation (now Microchip)

  • Additional Feature:

    METALLURGICALLY BONDED

  • Case Connection:

    ISOLATED

  • Configuration:

    SINGLE

  • Diode Element Material:

    SILICON

  • Diode Type:

    ZENER DIODE

  • JEDEC-95 Code:

    DO-204AA

  • JESD-30 Code:

    O-LALF-W2

  • JESD-609 Code:

    e0

  • Moisture Sensitivity Level:

    1

  • Number of Elements:

    1

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    200 °C

  • Operating Temperature-Min:

    -65 °C

  • Package Body Material:

    GLASS

  • Package Shape:

    ROUND

  • Package Style:

    LONG FORM

  • Polarity:

    UNIDIRECTIONAL

  • Power Dissipation-Max:

    0.417 W

  • Qualification Status:

    Not Qualified

  • Reference Voltage-Nom:

    1.8 V

  • Reverse Current-Max:

    7.5 µA

  • Surface Mount:

    NO

  • Technology:

    ZENER

  • Terminal Finish:

    TIN LEAD

  • Terminal Form:

    WIRE

  • Terminal Position:

    AXIAL

  • Voltage Tol-Max:

    5%

  • Working Test Current:

    0.05 mA

1N4678 Frequently Asked Questions (FAQs)

  • The recommended operating temperature range for the 1N4678 is -65°C to +175°C, although the device can withstand temperatures up to +200°C for short periods.
  • To ensure proper derating, follow the guidelines in the datasheet for power derating vs. temperature. As a general rule, reduce the maximum power rating by 1.5% for every degree above 25°C.
  • The typical dynamic impedance of the 1N4678 is around 10-20 ohms, although this can vary depending on the specific application and operating conditions.
  • While the 1N4678 can be used as a voltage regulator, it's not the most suitable device for this purpose. The 1N4678 is designed as a voltage reference, and its voltage regulation capabilities are limited. For voltage regulation, consider using a dedicated voltage regulator IC.
  • To protect the 1N4678 from EOS, ensure that the device is operated within its recommended voltage and current ratings. Additionally, consider adding transient voltage suppression (TVS) diodes or other protection devices to the circuit to absorb voltage spikes and surges.

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1N4678 Overview

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1N4678 Alternates

Showing results

Image Part Number Model
Part Image MX1N4678 Microchip Technology Inc

Zener Diode, 1.8V V(Z), 5%, 0.48W, Silicon, Unidirectional, DO-204AH
Part Image MSP1N4678TR Microsemi Corporation (now Microchip)

Zener Diode, 1.8V V(Z), 5%, 0.417W, Silicon, Unidirectional, DO-204AA, HERMETIC SEALED, GLASS, DO-7, 2 PIN
Part Image MV1N4678 Microsemi Corporation (now Microchip)

Zener Diode, 1.8V V(Z), 5%, 0.417W, Silicon, Unidirectional, DO-204AA
Part Image 1N4678(DO35)E3 Microsemi Corporation (now Microchip)

Zener Diode, 1.8V V(Z), 5%, 0.25W, Silicon, Unidirectional, DO-35
Part Image 1N4678-TP Micro Commercial Components

Zener Diode, 1.8V V(Z), 5%, 0.5W, Silicon, Unidirectional, DO-35
For a full list of alternate parts for 1N4678, check out Findchips.com