Model: 318C143

Variable Attenuator

Special Features:

Three sections, double flatted shaft; water proof; resistant to salt water

Properties:

Application Design
Audio
Body Diameter
1.094 inches
Bushing Length
0.219 inches
Schematic Diagram Designator
Balanced "h"
Mounting Facility Screw Thread Series Designator
Unef
Overall Attenuation Range In Decibels
+0.0/+12.0
Overall Attenuation Range In Decibels
+0.0 to 12.0
Attenuation Variation Method
Continuous
Mounting Facility Type And Quantity
1 threaded bushing
Frequency Range
Between 100.000 hertz and 20.000 kilohertz
Mounting Thread Quantity
32 per inch
Mounting Facility Screw Thread Diameter
0.375 inches
Impedance Rating In Ohms
600.0 input-output
Terminal Type And Quantity
6 tab, solder lug
NSN
5985-00-259-3789
Part Number
318C143
Description
Attenuator,variable
CAGE
1VPW8

A device for reducing the strength of an alternating current signal either continuously or in steps, without causing appreciable signal distortion, by maintaining substantially constant output and/or input impedance match. Continuously variable resistive devices must consist of at least two sections or one section with at least two rotating contacts. The item must have an overall attenuation rating. Includes tandem mounted variable resistors designed to function as an attenuator but whose terminals are not connected. See also resistor, vaiable (as modified).

Part 318C143 NSN 5985-00-259-3789

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00838
FIIG:
A223A0
Concept No.:
App. Key:
A
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:
P
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
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:
061700
UFC:
34580
LTL:
100.0
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8529109000
  • SITC: 76493
  • End Use: Telecommunications equipment
  • NAICS: 334220
  • USDA: 1

Freight Class: Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi

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