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Technical Data Sheet
3954-90B ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The ATTENUATOR,VARIABLE is a the manufacturer industrial component. Key specifications include body_style: COAXIAL TYPE, power_rating: 2.0 WATTS AVERAGE AND 50.0 WATTS PEAK, overall_width: 4.120 INCHES NOMINAL IN, overall_height: 3.122 INCHES NOMINAL IN, overall_length: 4.120 INCHES NOMINAL IN, frequency_range: 1.000 GIGAHERTZ MINIMUM AND 1.120 GIGAHERTZ MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-01-080-1415, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3954-90B
NSN: 5985-01-080-1415
FSC: 5985
CAGE: 09992 — ANTENNA & RADOME RESEARCH ASSOCIATES CORP DBA ARRA INC DIV ARRA INC (USA)
SPECIFICATIONS
body_styleCOAXIAL TYPE
power_rating2.0 WATTS AVERAGE AND 50.0 WATTS PEAK
overall_width4.120 INCHES NOMINAL IN
overall_height3.122 INCHES NOMINAL IN
overall_length4.120 INCHES NOMINAL IN
frequency_range1.000 GIGAHERTZ MINIMUM AND 1.120 GIGAHERTZ MAXIMUM
scale_linearityNONLINEAR
application_designTRANSMISSION LINE
scale_division_quantity90
terminal_type_and_quantity1 BINDING POST
voltage_standing_wave_ratio1.40
attenuation_variation_methodCONTINUOUS
NSN5985-01-080-1415
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ATTENUATOR,VARIABLE TITLE COMPONENT PN 3954-90B MFR ATTENUATOR,VARIABLE
KEY FEATURES
INSERTION LOSS AT MINIMUM ATTENUATION IN MAXIMUM DECIBELS: 0.25
SCALE DIVISION QUANTITY: 90
ADJUSTMENT DEVICE TYPE AND QUANTITY: 1 KNOB
BODY STYLE: COAXIAL TYPE
OVERALL ATTENUATION RANGE IN DECIBELS: +0.0 TO 90.0
ATTENUATION VARIATION METHOD: CONTINUOUS
MOUNTING FACILITY TYPE AND QUANTITY: 1 CONNECTOR
TECHNICAL CHARACTERISTICS (FLIS)
INSERTION LOSS AT MINIMUM ATTENUATION IN MAXIMUM DECIBELS0.25
OVERALL HEIGHT3.122 INCHES NOMINAL IN
SCALE DIVISION QUANTITY90
ADJUSTMENT DEVICE TYPE AND QUANTITY1 KNOB
BODY STYLECOAXIAL TYPE
OVERALL ATTENUATION RANGE IN DECIBELS+0.0 TO 90.0
ATTENUATION VARIATION METHODCONTINUOUS
MOUNTING FACILITY TYPE AND QUANTITY1 CONNECTOR
FREQUENCY RANGE1.000 GIGAHERTZ MINIMUM AND 1.120 GIGAHERTZ MAXIMUM
TERMINAL TYPE AND QUANTITY1 BINDING POST
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
837Interchangeable
interchangeable cross-reference
interchangeable
20413Interchangeable
interchangeable cross-reference
interchangeable
92122Interchangeable
interchangeable cross-reference
interchangeable
PS-100Interchangeable
interchangeable cross-reference
interchangeable
378969Interchangeable
interchangeable cross-reference
interchangeable
92122-25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3954-90B?
3954-90B is a ATTENUATOR,VARIABLE.
What parts can replace 3954-90B?
There are 8 known substitutes for 3954-90B: 837, 20413, 92122 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3954-90B?
3954-90B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-01-080-1415. This indicates validated use in U.S. government and defense supply chains.
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