Model: A-3994

Variable Attenuator

Properties:

Application Design
Transmission line
Body Style
Coaxial type
Overall Length
3.640 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
2.750 inches
Center To Center Distance Between Mounting Facilities Parallel To Width
1.562 inches
Overall Height
3.812 inches
Overall Width
1.953 inches
Coaxial Connector Series Designation
Bnc
Insertion Loss At Minimum Attenuation In Maximum Decibels
0.5
Overall Attenuation Range In Decibels
+0.0/+100.0
Attenuation Variation Method
Stepped
Step Position Quantity
3
Attenuation Per Step In Decibels
1.0 and 10.0 and 25.0
Mounting Facility Type And Quantity
3 unthreaded hole
Frequency Range
Between 0.100 megahertz and 1.000 megahertz
Segment Attenuation Range In Decibels
+0.00/+10.00 and +0.00/+40.00 and +0.00/+50.00
Segment Attenuation Accuracy In Decibels
-0.125/+0.125 and -0.25/+0.25 and -0.25/+0.25
Adjustment Device Type And Quantity
1 electronic, voltage controlled
Mounting Facility Pattern
Three position circular
Impedance Rating In Ohms
600.0 input-output
Terminal Type And Quantity
3 connector, coaxial, female
NSN
5985-00-419-5371
Part Number
A-3994
Description
Attenuator,variable
CAGE
12598

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 A-3994 NSN 5985-00-419-5371

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.2000lbs
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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