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Technical Data Sheet
PartsTable / MRO / 4B108
4B108 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include body_length: 4.141 INCHES MINIMUM AND 4.171 INCHES MAXIMUM IN, inclosure_type: ENCASED, overall_length: 5.641 INCHES MINIMUM AND 5.888 INCHES MAXIMUM IN, style_designator: ROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES, nominal_thread_size: 0.625 INCHES IN, operating_temp_range: -55.0 TO 85.0 CELSIUS DEGC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-834-8854, 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
MRO→ MRO_GENERAL→ 4B108
NSN: 5915-00-834-8854
FSC: 5915
CAGE: U4696 — E C C SPARES & SERVICES ELECTRO WORKS (GBR)
SPECIFICATIONS
body_length4.141 INCHES MINIMUM AND 4.171 INCHES MAXIMUM IN
inclosure_typeENCASED
overall_length5.641 INCHES MINIMUM AND 5.888 INCHES MAXIMUM IN
style_designatorROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
nominal_thread_size0.625 INCHES IN
operating_temp_range-55.0 TO 85.0 CELSIUS DEGC
body_outside_diameter1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN
load_impedance_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
mounting_facility_type_and_quantity1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED
source_impedance_rating_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
functional_terminal_type_and_quantity1 THREADED STUD INPUT FIRST FUNCTION
principal_circuitry_type_per_functionINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
NSN5915-00-834-8854
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN 4B108 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 THREADED STUD INPUT FIRST FUNCTION
•
SOURCE IMPEDANCE RATING PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
PRINCIPAL CIRCUITRY TYPE PER FUNCTION: INDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
•
MAXIMUM DIELECTRIC WITHSTANDING AC RMS VOLTAGE: 2400.0 VOLTS AT SEA LEVEL
•
POWER LINE FREQUENCY RATING PER FUNCTION IN HERTZ: 400.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
•
BODY LENGTH: 4.141 INCHES MINIMUM AND 4.171 INCHES MAXIMUM IN
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNEF
TECHNICAL CHARACTERISTICS (FLIS)
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 THREADED STUD INPUT FIRST FUNCTION
SOURCE IMPEDANCE RATING PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
PRINCIPAL CIRCUITRY TYPE PER FUNCTIONINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
MAXIMUM DIELECTRIC WITHSTANDING AC RMS VOLTAGE2400.0 VOLTS AT SEA LEVEL
POWER LINE FREQUENCY RATING PER FUNCTION IN HERTZ400.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 THREADED STUD OUTPUT SECOND FUNCTION
BODY LENGTH4.141 INCHES MINIMUM AND 4.171 INCHES MAXIMUM IN
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNEF
NOMINAL THREAD SIZE0.625 INCHES IN
OPERATING TEMP RANGE-55.0 TO 85.0 CELSIUS DEGC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
12703Interchangeable
interchangeable cross-reference
interchangeable
C930Interchangeable
interchangeable cross-reference
interchangeable
A6-87Interchangeable
interchangeable cross-reference
interchangeable
A686Interchangeable
interchangeable cross-reference
interchangeable
0784Interchangeable
interchangeable cross-reference
interchangeable
0C265Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4B108?
4B108 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4B108?
There are 10 known substitutes for 4B108: 12703, C930, A6-87 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B108?
4B108 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-834-8854. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026