RWR81S4R02FSB12 The Vishay Dale RWR81S4R02FSB12 is a wirewound resistor with a resistance of 4.02 Ohms and a power rating of 1W. It offers a tolerance of ±1% and a temperature coefficient of ±50ppm/°C.
Mfr Part #:

RWR81S4R02FSB12

Available from 1 distributors
Mfr Name: Vishay
Vishay
The Vishay Dale RWR81S4R02FSB12 is a wirewound resistor with a resistance of 4.02 Ohms and a power rating of 1W. It offers a tolerance of ±1% and a temperature coefficient of ±50ppm/°C.
Total Stock: 9 pcs
$ Price Range: $0.01

RWR81S4R02FSB12 Available from 1 distributor

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RWR81S4R02FSB12 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Number of Terminations
Operating Temperature
Power (Watts)
Resistance
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RWR81S4R02FSB12 Description

Short technical summary and product information.

This Vishay Dale RWR81S4R02FSB12 is a wirewound resistor designed for through-hole mounting. It features a resistance value of 4.02 Ohms with a tight tolerance of ±1% and a power rating of 1 Watt. The resistor is built to withstand demanding conditions, indicated by its military and moisture-resistant features.

 

With a temperature coefficient of ±50ppm/°C and an operating temperature range from -55°C to 250°C, this component is suitable for various applications requiring stable performance. The axial package measures 0.085" Dia x 0.250" L (2.16mm x 6.35mm), and it comes in bulk packaging with a standard package quantity of 100 units.

 

The RWR81S series is part of Vishay Dale's military-grade resistors, adhering to MIL-PRF-39007 standards, and offers a failure rate of S (0.001%). Its construction ensures reliability in harsh environments.

RWR81S4R02FSB12 Quick Information

Product Type: Through Hole Resistor
Series: RWR81S
Canonical Name: Vishay Dale RWR81S4R02FSB12 Wirewound Resistor
Subcategory: Wirewound

RWR81S4R02FSB12 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

RWR81S4R02FSB12 Estimated Pricing

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1+ $0.01 $0.01

Estimated market price range - modelled values for guidance only, not live distributor offers.

RWR81S4R02FSB12 Features

  • Wirewound construction for stable resistance.
  • 1 Watt power rating for demanding loads.
  • ±1% tolerance ensures precise circuit function.
  • Wide operating temperature range: -55°C to 250°C.
  • Military and moisture resistant features.

RWR81S4R02FSB12 Applications

  • Ideal for military electronic systems.
  • Suitable for high-reliability circuits.
  • Used in harsh environmental conditions.
  • Effective in power management circuits.

RWR81S4R02FSB12 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the resistance value of the RWR81S4R02FSB12 resistor?

The resistance value is 4.02 Ohms.

What is the power rating of this Vishay Dale resistor?

The power rating is 1 Watt.

What is the tolerance of the RWR81S4R02FSB12?

The tolerance is ±1%.

What is the temperature coefficient for this component?

The temperature coefficient is ±50ppm/°C.

What is the operating temperature range for the RWR81S4R02FSB12?

It operates from -55°C to 250°C.

What type of resistor construction does the RWR81S4R02FSB12 have?

It is a wirewound resistor.

What are the key features of the RWR81S4R02FSB12?

Key features include military and moisture resistance.

RWR81S4R02FSB12 Alternate Parts

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RWR81S4R02FSS70
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RES 4.02 OHM 1% 1W AXIAL
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RES 4.02 OHM 1W 1% WW AXIAL
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