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WHA250FET - Ohmite

Description: Ohmite WH Series ceramic Axial Wirewound Resistor 250Ω 1% 0.5W ±20ppm/°C

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WHA250FET - Ohmite PCB footprint - Resistors, Axial Diameter Horizontal Mounting - Resistors, Axial Diameter Horizontal Mounting - WHA5R0FET
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3D Models
WHA250FET - Ohmite  - 3D model - Resistors, Axial Diameter Horizontal Mounting - WHA5R0FET
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WHA250FET Details

  • Manufacturer Part Number:

    WHA250FET

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    AXIAL LEADED

  • Reach Compliance Code:

    Compliant

  • Country Of Origin:

    Taiwan

  • ECCN Code:

    EAR99

  • HTS Code:

    8533.21.00.80

  • Manufacturer:

    Ohmite Mfg Co

  • YTEOL:

    10

  • Additional Feature:

    PRECISION

  • Construction:

    Tubular

  • JESD-609 Code:

    e3

  • Lead Diameter:

    0.6 mm

  • Lead Length:

    25 mm

  • Mounting Feature:

    THROUGH HOLE MOUNT

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -55 °C

  • Package Diameter:

    2.54 mm

  • Package Length:

    5.08 mm

  • Package Shape:

    TUBULAR PACKAGE

  • Package Style:

    Axial

  • Packing Method:

    TR, 11.41 INCH

  • Rated Power Dissipation (P):

    0.5 W

  • Rated Temperature:

    70 °C

  • Resistance:

    250 Ω

  • Resistor Type:

    FIXED RESISTOR

  • Surface Mount:

    NO

  • Technology:

    WIRE WOUND

  • Temperature Coefficient:

    20 ppm/°C

  • Terminal Finish:

    Tin (Sn)

  • Terminal Shape:

    WIRE

  • Tolerance:

    1%

  • Working Voltage:

    11.1803 V

WHA250FET Frequently Asked Questions (FAQs)

  • The thermal resistance of the WHA250FET is typically around 1.5°C/W, but this can vary depending on the specific application and mounting method.
  • While the WHA250FET is primarily designed for low-frequency applications, it can be used in high-frequency applications up to 100 kHz with some degradation in performance. However, it's not recommended for high-frequency applications above 100 kHz.
  • To ensure proper heat sinking, make sure to use a thermal interface material (TIM) between the device and the heat sink, and secure the device to the heat sink using screws or a suitable mounting method. Also, ensure good airflow around the heat sink to dissipate heat efficiently.
  • The maximum allowable voltage for the WHA250FET is 250V, but it's recommended to derate the voltage to 200V or lower for reliable operation and to prevent overheating.
  • The WHA250FET is designed for high-current applications, but the maximum current rating depends on the specific application and cooling method. In general, the device can handle up to 250A, but it's recommended to derate the current to 200A or lower for reliable operation.

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