Model: 178991-1

Nonind Wire Wound Fixed Resistor

Properties:

Tempurature Coefficient Of Resistance In Ppm Per Deg Celsius
-2.5/+2.5
Tempurature Coefficient Of Resistance In Ppm Per Deg Celsius
-2.5 to 2.5
Electrical Resistance
2.500 megohms
Resistance Tolerance In Percent
-0.005/+0.005
Resistance Tolerance In Percent
-0.005 to 0.005
Ambient Tempurature In Deg Celsius At Full Rated Power
55.0
Ambient Tempurature In Deg Celsius At Zero Percent Rated Power
85.0
Tempurature Range Of Tempurature Coefficient In Deg Celsius
-5.0/+65.0
Inclosure Method
Encapsulated
Terminal Type
Wire lead
Reliability Indicator
Not established
Body Diameter
0.500 inches
Body Length
2.000 inches
Power Dissipation Rating In Watts
2.000 free air
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)
NSN
5905-00-082-1237
Part Number
178991-1
Description
Resistor,fixed,wire Wound,nonind
CAGE
09017

Inc 37404 reinstated on 010303~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. The items must have inherent characteristics of inducing little or no self-inductance. Opposition to current flow is an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Excludes suppressor, ignition interference. See also resistor (1), fixed, wire wound, inductive.

Part 178991-1 NSN 5905-00-082-1237

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37404
FIIG:
A001A0
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
B
ESD:
B
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062960
UFC:
35140
LTL:
77.5
LCL:
--
WCC:
658
TCC:
3
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8533390080
  • SITC: 77233
  • End Use: Electric apparatus
  • NAICS: 334416
  • USDA: 1

Freight Class: Wirewound variable resistors, nesoi

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