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1SMA5939BT3G - onsemi

Description: Ideal Replacement for MELF Packages Mechanical Characteristics:; Case: Void-free, transfer-molded plastic; Finish: All external surfaces are corrosion resistant with readily solderable leads; Maximum Case Temperature for Soldering Purposes: 260 °C for 10 seconds; POLARITY: Cathode indicated by molded polarity notch or cathode band.; FLAMMABILITY RATING: UL94 V–0; Pb-Free Packages are Available; AEC-Q101 Qualified and PPAP Capable; SZ Prefix for Automotive and Other Applications Requiring Unique Site and Con

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1SMA5939BT3G - onsemi - PCB symbol
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PCB Footprints
1SMA5939BT3G - onsemi PCB footprint - Diodes Moulded - Diodes Moulded - SMA CASE 403D-02
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3D Models
1SMA5939BT3G - onsemi - 3D model - Diodes Moulded - SMA CASE 403D-02
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1SMA5939BT3G Details

  • Manufacturer Part Number:

    1SMA5939BT3G

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SMA

  • Package Description:

    LEAD FREE, PLASTIC, CASE 403D-02, SMA, 2 PIN

  • Pin Count:

    2

  • Manufacturer Package Code:

    403D-02

  • Country Of Origin:

    Vietnam

  • ECCN Code:

    EAR99

  • HTS Code:

    8541.10.00.50

  • Factory Lead Time:

    6 Weeks

  • Manufacturer:

    onsemi

  • YTEOL:

    6.65

  • Configuration:

    SINGLE

  • Diode Element Material:

    SILICON

  • Diode Type:

    ZENER DIODE

  • Dynamic Impedance-Max:

    45 Ω

  • JESD-30 Code:

    R-PDSO-C2

  • JESD-609 Code:

    e3

  • Knee Impedance-Max:

    900 Ω

  • Moisture Sensitivity Level:

    1

  • Number of Elements:

    1

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -65 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Polarity:

    UNIDIRECTIONAL

  • Power Dissipation-Max:

    0.5 W

  • Qualification Status:

    Not Qualified

  • Reference Voltage-Nom:

    39 V

  • Reverse Current-Max:

    0.5 µA

  • Reverse Test Voltage:

    29.7 V

  • Surface Mount:

    YES

  • Technology:

    ZENER

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    C BEND

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Voltage Tol-Max:

    5%

  • Working Test Current:

    9.6 mA

1SMA5939BT3G Frequently Asked Questions (FAQs)

  • A thermal pad on the bottom of the package should be connected to a large copper area on the PCB to dissipate heat. A minimum of 2 oz copper thickness is recommended. Additionally, vias should be placed under the package to connect the thermal pad to the copper area.
  • Ensure that the device is operated within the recommended voltage and current ratings. Also, consider the derating of the device's electrical characteristics over temperature. It is also recommended to follow the recommended PCB layout and thermal management guidelines.
  • The 1SMA5939BT3G has built-in ESD protection, but it is still recommended to follow proper ESD handling procedures during assembly and testing. Additionally, consider adding external ESD protection devices if the device will be exposed to harsh environments.
  • The 1SMA5939BT3G is a commercial-grade device, but onsemi offers a range of high-reliability and aerospace-grade devices. For high-reliability or aerospace applications, consider using a device that meets the relevant standards and requirements, such as MIL-PRF-19500 or ESCC 4001.
  • Store the devices in their original packaging or in a dry, ESD-protected environment. Avoid exposing the devices to moisture, extreme temperatures, or physical stress. Follow the recommended handling procedures for ESD-sensitive devices.

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1SMA5939BT3G Overview

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