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4N38SM - onsemi

Description: Safety and Regulatory Approvals:; High Voltage:; H11D3M, BVCEO= 200 V; UL1577, 4,170 VACRMS for 1 Minute; DIN-EN/IEC60747-5-5, 850 V Peak Working Insulation Voltage; H11D1M, BVCEO= 300 V; MOC8204M, BVCEO= 400 V

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Symbol
4N38SM - onsemi - PCB symbol
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PCB Footprints
4N38SM - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - 6-Pin DIP
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3D Models
4N38SM - onsemi - 3D model - Dual-In-Line Packages - 6-Pin DIP
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4N38SM Details

  • Manufacturer Part Number:

    4N38SM

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    PDIP-6

  • Manufacturer Package Code:

    646BX

  • Country Of Origin:

    Thailand

  • HTS Code:

    8541.40.80.00

  • Manufacturer:

    onsemi

  • YTEOL:

    6

  • Additional Feature:

    UL APPROVED

  • Coll-Emtr Bkdn Voltage-Min:

    80 V

  • Configuration:

    SINGLE

  • Current Transfer Ratio-Min:

    20%

  • Dark Current-Max:

    50 nA

  • Forward Current-Max:

    0.08 A

  • Forward Voltage-Max:

    1.5 V

  • Isolation Voltage-Max:

    7500 V

  • JESD-609 Code:

    e3

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Elements:

    1

  • On-State Current-Max:

    0.1 A

  • Operating Temperature-Max:

    100 °C

  • Operating Temperature-Min:

    -40 °C

  • Optoelectronic Device Type:

    TRANSISTOR OUTPUT OPTOCOUPLER

  • Packing Method:

    TUBE

  • Power Dissipation-Max:

    0.15 W

  • Response Time-Max:

    0.000005 s

  • Surface Mount:

    YES

  • Terminal Finish:

    Matte Tin (Sn) - annealed

4N38SM Frequently Asked Questions (FAQs)

  • The maximum allowable voltage across the input pins is typically ±5V, but it's recommended to keep it within ±1V to ensure reliable operation.
  • To ensure proper biasing, connect the anode of the LED to a positive voltage source through a current-limiting resistor, and connect the cathode to ground or a negative voltage source. The recommended forward current is 5-10mA.
  • The minimum CTR for the 4N38SM is 100% at IF = 5mA, but it can vary depending on the specific device and operating conditions. Consult the datasheet for more information.
  • The 4N38SM has a limited bandwidth of around 10kHz, making it suitable for low-to-medium frequency applications. For high-frequency applications, consider using a faster optocoupler like the FODM8071 or HCPL-817.
  • The output of the 4N38SM is an open-collector transistor, which means it can only sink current. You'll need to add an external pull-up resistor to the output pin to ensure proper operation.

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4N38SM Overview

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