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RWR81S4990FRB12 - Vishay

Description: • High temperature silicone coated • Complete welded construction • Qualified to MIL-PRF-39007 • Available in non-inductive styles (type N) with Ayrton-Perry winding for lowest reactive components • “S” level failure rate available

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RWR81S4990FRB12 - Vishay - PCB symbol
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RWR81S4990FRB12 - Vishay PCB footprint - Resistors, Axial Diameter Horizontal Mounting - Resistors, Axial Diameter Horizontal Mounting - RWR81
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RWR81S4990FRB12 - Vishay - 3D model - Resistors, Axial Diameter Horizontal Mounting - RWR81
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RWR81S4990FRB12 Details

  • Manufacturer Part Number:

    RWR81S4990FRB12

  • Rohs Code:

    No

  • Part Life Cycle Code:

    Active

  • Package Description:

    AXIAL LEADED

  • Reach Compliance Code:

    Not Compliant

  • Country Of Origin:

    Mexico, USA

  • ECCN Code:

    EAR99

  • HTS Code:

    8533.21.00.80

  • Factory Lead Time:

    38 Weeks

  • Manufacturer:

    Vishay Intertechnologies

  • YTEOL:

    7.5

  • Construction:

    Tubular

  • JESD-609 Code:

    e0

  • Lead Diameter:

    0.508 mm

  • Mounting Feature:

    THROUGH HOLE MOUNT

  • Number of Terminals:

    2

  • Operating Temperature-Max:

    250 °C

  • Operating Temperature-Min:

    -55 °C

  • Package Diameter:

    2.16 mm

  • Package Length:

    6.35 mm

  • Package Style:

    Axial

  • Packing Method:

    BULK

  • Rated Power Dissipation (P):

    1 W

  • Rated Temperature:

    25 °C

  • Reference Standard:

    MIL-PRF-39007

  • Resistance:

    499 Ω

  • Resistor Type:

    FIXED RESISTOR

  • Surface Mount:

    NO

  • Technology:

    WIRE WOUND

  • Temperature Coefficient:

    20 ppm/°C

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Shape:

    WIRE

  • Tolerance:

    1%

  • Working Voltage:

    22.0681 V

RWR81S4990FRB12 Frequently Asked Questions (FAQs)

  • The thermal resistance of the RWR81S4990FRB12 is 250°C/W, which is typical for a 1206-sized thick-film resistor.
  • While the RWR81S4990FRB12 is a general-purpose resistor, it's not optimized for high-frequency applications. For high-frequency use, consider using a thin-film resistor or a specialized high-frequency resistor from Vishay or other manufacturers.
  • The RWR81S4990FRB12 has a maximum operating temperature of 155°C. While it can tolerate high temperatures, it's essential to derate the power according to the temperature derating curve provided in the datasheet to ensure reliable operation.
  • The RWR81S4990FRB12 has a moisture sensitivity level (MSL) of 1, which means it can withstand normal humidity and moisture levels. However, it's still important to follow proper storage and handling procedures to prevent damage.
  • The RWR81S4990FRB12 is a surface-mount device and can withstand normal vibration levels. However, it's essential to ensure proper soldering and mounting to prevent mechanical stress and damage.

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RWR81S4990FRB12 Overview

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RWR81S4990FRB12 Alternates

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Image Part Number Model
Part Image RWR81N4990FMB12 Vishay Intertechnologies

Fixed Resistor, Wire Wound, 1W, 499ohm, 22.0681V, 1% +/-Tol, 20ppm/Cel, Through Hole Mount, AXIAL LEADED
Part Image RWR81S4990FPBSL Vishay Dale

RESISTOR, WIRE WOUND, 1 W, 1 %, 20 ppm, 499 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
Part Image RWR81S4990FPB12 Vishay Intertechnologies

Fixed Resistor, Wire Wound, 1W, 499ohm, 22.0681V, 1% +/-Tol, 20ppm/Cel, Through Hole Mount, AXIAL LEADED
Part Image RWR81N4990FSS70 Vishay Dale

RESISTOR, WIRE WOUND, 1 W, 1 %, 20 ppm, 499 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
Part Image RWR81S4990FSRSL Vishay Dale

RESISTOR, WIRE WOUND, 1 W, 1 %, 20 ppm, 499 ohm, THROUGH HOLE MOUNT, AXIAL LEADED
For a full list of alternate parts for RWR81S4990FRB12, check out Findchips.com