2-3953-7A
Variable Attenuator
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).
2.485 inches minimum and 2.515 inches maximum center to center distance between mounting facilities parallel to width, 2.485 inches minimum and 2.515 inches maximum center to center distance between mounting facilities parallel to length, 3.720 inches minimum and 3.840 inches maximum overall length, irregular body style, transmission line application design
Basic Details
View the essential basic details of this aerospace electrical component, including key identifiers and classifications.
5985-01-158-0055
01-158-0055
Variable Attenuator
2-3953-7A
5985 - Related Equipment, Waveguides and Antennas
Electrical and Electronic Equipment Components
07/14/1983 (42 years ago)
00838
Technical Specifications
Review the complete technical specifications, performance details, and compliance standards for aerospace electrical component: 2-3953-7A
- Application Design
- transmission line
- Body Style
- irregular
- Overall Length
- 3.720 inches minimum and 3.840 inches maximum
- Center To Center Distance Between Mounting Facilities Parallel To Length
- 2.485 inches minimum and 2.515 inches maximum
- Center To Center Distance Between Mounting Facilities Parallel To Width
- 2.485 inches minimum and 2.515 inches maximum
- Overall Height
- 0.650 inches minimum and 0.770 inches maximum
- Overall Width
- 3.380 inches minimum and 3.620 inches maximum
- Shaft Diameter
- 0.250 inches nominal
- Shaft Length
- 0.440 inches minimum and 0.560 inches maximum
- Voltage Standing Wave Ratio
- 1.50
- Coaxial Connector Series Designation
- sma
- Power Rating
- 10.0 watts average and 1.0 kilowatts peak
- Mounting Facility Screw Thread Series Designator
- unc
- Insertion Loss At Minimum Attenuation In Maximum Decibels
- 3.3
- Overall Attenuation Range In Decibels
- +0.0 to 7.0
- Attenuation Variation Method
- continuous
- Mounting Facility Type And Quantity
- 4 threaded hole
- Frequency Range
- 0.960 gigahertz minimum and 1.215 gigahertz maximum
- Overall Attenuation Accuracy In Decibels
- -0.20 to 0.20
- Mounting Thread Quantity
- 40 per inch
- Adjustment Device Type And Quantity
- 1 shaft
- Mounting Facility Pattern
- four position rectangular
- Shaft Type
- round, slotted
- Mounting Facility Nominal Screw Thread Diameter
- 0.112 inches
- Impedance Rating In Ohms
- 50.0 input-output
- Terminal Type And Quantity
- 3 connector, coaxial, female
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