Model: 138C139H02

Variable Attenuator
Description:

Transmission line application design, coaxial type body style, 3.750 inches overall length, 2.500 inches center to center distance between mounting facilities parallel to length.

Properties:

Application Design
Transmission line
Body Style
Coaxial type
Overall Length
3.750 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
2.500 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
2.250 inches
Overall Height
2.875 inches
Overall Width
3.000 inches
Operating Tempurature Range
-40.0/+62.0 degrees celsius
Coaxial Connector Series Designation
Sm
Power Rating
15.0 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/+20.0
Overall Attenuation Range In Decibels
+0.0 to 20.0
Attenuation Variation Method
Continuous
Mounting Facility Type And Quantity
4 threaded hole
Frequency Range
Between 2.900 megahertz and 3.100 megahertz
Overall Attenuation Accuracy In Decibels
-1.00/+1.00
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
5985-00-090-7443
Part Number
138C139H02
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 138C139H02 NSN 5985-00-090-7443

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:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
2.0000lbs
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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