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1N4728A - onsemi

Description: Zener Voltage Range - 3.3 V to 91 V; ESD Rating of Class 3 (>16 KV) per Human Body Model; DO-41 (DO-204AL) Package; Double Slug Type Construction; Metallurgical Bonded Construction; Oxide Passivated Die Mechanical Characteristics:; CASE: Double slug type, hermetically sealed glass; FINISH: All external surfaces are corrosion resistant and leads are readily solderable; MAXIMUM LEAD TEMPERATURE FOR SOLDERING PURPOSES: 230°C, 1/16" from the case for 10 seconds; POLARITY: Cathode indicated by polarity band; MOU

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1N4728A - onsemi PCB footprint - Diodes, Axial Diameter Horizontal Mounting - Diodes, Axial Diameter Horizontal Mounting - 1N4728A
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1N4728A - onsemi  - 3D model - Diodes, Axial Diameter Horizontal Mounting - 1N4728A
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1N4728A Details

  • Manufacturer Part Number:

    1N4728A

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    Axial Lead / DO-41

  • Pin Count:

    2

  • Manufacturer Package Code:

    017AH

  • Country Of Origin:

    Mainland China

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.10.00.50

  • Manufacturer:

    onsemi

  • YTEOL:

    5.85

  • Case Connection:

    ISOLATED

  • Configuration:

    SINGLE

  • Diode Element Material:

    SILICON

  • Diode Type:

    ZENER DIODE

  • Dynamic Impedance-Max:

    10 Ω

  • JEDEC-95 Code:

    DO-41

  • JESD-30 Code:

    O-LALF-W2

  • JESD-609 Code:

    e3

  • Knee Impedance-Max:

    400 Ω

  • 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:

    1 W

  • Qualification Status:

    Not Qualified

  • Reference Voltage-Nom:

    3.3 V

  • Reverse Current-Max:

    100 µA

  • Reverse Test Voltage:

    1 V

  • Surface Mount:

    NO

  • Technology:

    ZENER

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    WIRE

  • Terminal Position:

    AXIAL

  • Voltage Tol-Max:

    5%

  • Working Test Current:

    76 mA

1N4728A Frequently Asked Questions (FAQs)

  • The recommended operating temperature range for the 1N4728A is -65°C to +175°C.
  • Yes, the 1N4728A is suitable for high-reliability applications due to its hermetically sealed glass package and rigorous testing and screening processes.
  • To ensure proper soldering, use a soldering iron with a temperature of 250°C to 260°C, and apply a small amount of solder to the leads. Avoid overheating the device or using excessive force, which can cause damage.
  • The maximum power dissipation for the 1N4728A is 1 watt. Exceeding this rating can cause the device to overheat and fail.
  • Yes, the 1N4728A can be used in switching power supplies due to its fast switching times and low capacitance. However, ensure that the device is properly biased and that the voltage and current ratings are not exceeded.

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1N4728A Overview

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1N4728A Alternates

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Image Part Number Model
Part Image 1N4728A Vishay Semiconductors

Zener Diode, 3.3V V(Z), 5%, 1W, Silicon, Unidirectional, DO-204AL

Part Image 1N4728A-T Diodes Incorporated

Zener Diode, 3.3V V(Z), 5%, 1W, Silicon, Unidirectional, DO-41

Part Image 1N4728A Texas Instruments

Zener Diode, 3.3V V(Z), 5%, 1W, Silicon, Unidirectional, 36050

Part Image 1N4728A-A Diodes Incorporated

Zener Diode, 3.3V V(Z), 5%, 1W, Silicon, Unidirectional, DO-41

Part Image 1N4728APTR Microsemi Corporation (now Microchip)

Zener Diode, 3.3V V(Z), 5%, 1W, Silicon, Unidirectional, DO-204AL

For a full list of alternate parts for 1N4728A, check out Findchips.com