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521781-1 - TE Connectivity

Description: Body Features: Primary Product Color Natural | Configuration Features: Number of Positions 4 | Contact Features: Contact Mating Retention With | Terminal Type Receptacle | Terminal Orientation Straight | Housing Features: Centerline (Pitch) 6.81 MM | Housing Material Nylon | Centerline (Pitch) .268 INCH | Industry Standards: UL Flammability Rating UL 94V-0 | Mechanical Attachment: Connector Mounting Type Cable Mount (Free-Hanging) | Mating Alignment Type Polarization | Mating Alignment With | Packaging Feat

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521781-1 - TE Connectivity  - 3D model
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521781-1 Details

  • Manufacturer Part Number:

    521781-1

  • Brand Name:

    TE Connectivity

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Reach Compliance Code:

    Compliant

  • ECCN Code:

    EAR99

  • HTS Code:

    8536.69.40.30

  • Manufacturer:

    TE Connectivity

  • Additional Feature:

    POLARISED

  • Body Breadth:

    0.4 inch

  • Body Depth:

    0.98 inch

  • Body Length:

    1.644 inch

  • Body/Shell Style:

    RECEPTACLE

  • Connector Type:

    COMBINATION LINE CONNECTOR

  • Contact Finish Mating:

    NOT APPLICABLE

  • Contact Gender:

    FEMALE

  • Contact Material:

    NOT APPLICABLE

  • DIN Conformance:

    NO

  • EMI Shielded:

    NO

  • Empty Shell:

    YES

  • Filter Feature:

    NO

  • IEC Conformance:

    NO

  • Insulator Material:

    POLYAMIDE

  • MIL Conformance:

    NO

  • Mains Connector Rating:

    115/230VAC

  • Mixed Contacts:

    NO

  • Mounting Type:

    CABLE

  • Number Of Connectors:

    ONE

  • Number of Ports:

    1

  • Number of Rows Loaded:

    1

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Option:

    GENERAL PURPOSE

  • Panel Mount:

    NO

  • Polarization Key:

    POLARIZED

  • Reference Standard:

    UL

  • Terminal Pitch:

    6.81 mm

  • Termination Type:

    CRIMP

  • Total Number of Contacts:

    4

  • UL Flammability Code:

    94V-0

521781-1 Frequently Asked Questions (FAQs)

  • The recommended torque value is 0.5-0.7 Nm (5-7 in-lbs) for the screw terminals on the 521781-1 connector.
  • Yes, the 521781-1 connector is designed to withstand high-vibration environments, but it's recommended to follow TE Connectivity's guidelines for vibration testing and to ensure proper mounting and screw torque.
  • The maximum operating temperature for the 521781-1 connector is 125°C (257°F), but it's recommended to derate the current carrying capacity at higher temperatures.
  • While it's technically possible to use a different wire gauge, it's not recommended as it may affect the connector's performance and reliability. It's best to follow TE Connectivity's recommended wire gauge specifications.
  • Yes, the 521781-1 connector is designed to meet the requirements of automotive applications, including high-temperature and vibration resistance.

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521781-1 Overview

Use the download button to access the 521781-1 3D model. You can still request or build the schematic symbol and PCB footprint by using the respective build or request forms on this page.
To find more CAD model downloads similar to this part, try a partial part number search, like 52178, or try a keyword search, such as Combination Line Connectors

About TE Connectivity

TE Connectivity, a global leader in connectivity and sensor solutions, designs and manufactures products that enable a more connected world. Serving a diverse range of industries, including automotive, industrial, medical, aerospace, and telecommunications, TE Connectivity offers a broad portfolio of products such as connectors, sensors, relays, and passive components. The company's innovations help improve the reliability and performance of electronic systems.

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