Model: 138C139H01

Variable Attenuator

Properties:

Application Design
Transmission line
Body Style
Coaxial type
Overall Length
3.750 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
2.250 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
2.250 inches
Overall Height
2.100 inches
Overall Width
3.000 inches
Operating Tempurature Range
-40.0/+62.0 degrees celsius
Voltage Standing Wave Ratio
1.50
Coaxial Connector Series Designation
Sma
Power Rating
10.0 watts average and 5.0 kilowatts peak
Mounting Facility Screw Thread Series Designator
Unc
Insertion Loss At Minimum Attenuation In Maximum Decibels
0.5
Overall Attenuation Range In Decibels
+0.0/+50.0
Attenuation Variation Method
Continuous
Mounting Facility Type And Quantity
4 threaded hole
Frequency Range
Between 2.900 gigahertz and 3.100 gigahertz
Overall Attenuation Accuracy In Decibels
-1.50/+1.50
Mounting Thread Quantity
32 per inch
Adjustment Device Type And Quantity
1 knob
Mounting Facility Pattern
Four position rectangular
Mounting Facility Screw Thread Diameter
0.138 inches
Impedance Rating In Ohms
50.0 input-output
Terminal Type And Quantity
2 connector, coaxial, female
NSN
5985-01-134-4952
Part Number
138C139H01
Description
Attenuator,variable
CAGE
97942

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 138C139H01 NSN 5985-01-134-4952

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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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