178991-1

View detailed technical data, stock status, and sourcing information for: 178991-1
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5905 Resistor

National Stock Number

5905-00-082-1237

Item Name Code

00010

Assigment Date

01/01/1961 (65 years ago)

A resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self supporting. Opposition to the flow of current is an inherent property of the resistance wire and is manifest by the heat dissipation in the resistor. Excludes:suppressor,ignition interference.

-2.5 to 2.5 temp coefficient of resistance in ppm per deg celsius, 85.0 ambient temp in deg celsius at zero percent rated power, 2.500 megohms electrical resistance, -5.0 to 65.0 temp range of temp coefficient in deg celsius, -0.005 to 0.005 resistance tolerance in percent

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Temp Coefficient Of Resistance In Ppm Per Deg Celsius: -2.5 to 2.5
Electrical Resistance: 2.500 megohms
Resistance Tolerance In Percent: -0.005 to 0.005
Ambient Temp In Deg Celsius At Zero Percent Rated Power: 85.0
Temp Range Of Temp Coefficient In Deg Celsius: -5.0 to 65.0
Reliability Indicator: not established
Body Diameter: 0.500 inches nominal
Body Length: 2.000 inches nominal
Power Dissipation Rating In Watts: 2.000 free air
Ambient Temp At Full Rated Power: 55.0 celsius
Inclosure Type: encapsulated
Terminal Type: wire lead
Style Designator: axial terminal each end
Test Data Document: 50222-178991 drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
178991-1	Wire Wound Fixed Resistor

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5905-00-082-1237?

The FSCG of the NSN 5905-00-082-1237 is 5905

Does the NSN 5905-00-082-1237 have a Schedule B code assigned?

Yes, the Schedule B code is 8533390080

Does NSN 5905-00-082-1237 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5905-00-082-1237 contain precious materials?

Precious metal content is unknown

Does NSN 5905-00-082-1237 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5905-00-082-1237 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961