Model: 57-291

Wire Wound Fixed Resistor

Properties:

Electrical Resistance
7.300 ohms
Resistance Tolerance In Percent
-10.000/+10.000
Ambient Tempurature In Deg Celsius At Full Rated Power
50.0
Ambient Tempurature In Deg Celsius At Zero Percent Rated Power
350.0
Inclosure Method
Encased
Terminal Type
Tab w/screw
Reactance Characteristic
Noninductive
Reliability Indicator
Not established
Body Length
7.750 inches
Body Width
3.375 inches
Body Height
0.438 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
6.875 inches
Power Dissipation Rating In Watts
90.000 free air
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width
Between 2.000 inches and 2.500 inches
Terminal Width
0.344 inches
Mounting Hole Size
0.438 inches
Style Designator
Terminals one side
Test Data Document
81349-milr15109b 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.).
Nondefinitive Specification/std Data
Iw form
NSN
5905-00-259-3089
Part Number
57-291
Description
Resistor,fixed,wire Wound
CAGE
81640

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.

Part 57-291 NSN 5905-00-259-3089

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00010
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:
ESD:
MMAC:
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:
00
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:
Z
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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