Model: MIL-R-18546/1

Induct Wire Wound Fixed Resistor

Properties:

Tempurature Coefficient Of Resistance In Ppm Per Deg Celsius
-30.0/+30.0
Electrical Resistance
255.000 ohms
Resistance Tolerance In Percent
-1.000/+1.000
Heat Sink Material
Aluminum alloy
Heat Sink Length
7.000 inches
Heat Sink Width
5.000 inches
Heat Sink Height
2.000 inches
Heat Sink Thickness
0.040 inches
Ambient Tempurature In Deg Celsius At Full Rated Power
25.0
Ambient Tempurature In Deg Celsius At Zero Percent Rated Power
275.0
Tempurature Range Of Tempurature Coefficient In Deg Celsius
-55.0/+275.0
Inclosure Method
Encased
Terminal Type
Tab, solder lug
Reliability Indicator
Established
Reliability Failure Rate Level In Percent
0.010
Terminal Length
0.438 inches
Body Length
1.062 inches
Body Width
0.531 inches
Body Height
0.562 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
0.719 inches
Power Dissipation Rating In Watts
8.000 free air
Mounting Hole Size
0.125 inches
Style Designator
Axial terminal (s)
Test Data Document
81349-mil-r-39009 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Specification Data
81349-mil-r-39009/1 government specification
NSN
5905-00-270-1277
Part Number
MIL-R-18546/1
Description
Resistor,fixed,wire Wound,induct
CAGE
81349

Inc 37403 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 item must have inherent characteristics of inducing 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, noninductive.

Part MIL-R-18546/1 NSN 5905-00-270-1277

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37403
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:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
72D
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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