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Technical Data Sheet
404681 ✓ Verified by PartsTable
Legrand · 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

The 404681 is a Legrand industrial component. Key specifications include gate_time: 200.0 MICROSECONDS MINIMUM AND 99900000.0 MICROSECONDS MAXIMUM US, count_rate: 0.0 MEGAHERTZ MINIMUM SINGLE PERIOD AND 160.0 MEGAHERTZ MAXIMUM SINGLE PERIOD, current_type: DC, period_range: +10.0 TO 160000000.0, overall_width: 1.188 INCHES NOMINAL IN, ratio_display: F1/F2 TIMES THE PERIOD MULTIPLIERFROM DC TO 100 MHZ MHz. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-371-8269, 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 404681
NSN: 6625-01-371-8269
FSC: 6625
CAGE: 21793 — ASTRONICS TEST SYSTEMS INC (USA)
SPECIFICATIONS
gate_time200.0 MICROSECONDS MINIMUM AND 99900000.0 MICROSECONDS MAXIMUM US
count_rate0.0 MEGAHERTZ MINIMUM SINGLE PERIOD AND 160.0 MEGAHERTZ MAXIMUM SINGLE PERIOD
current_typeDC
period_range+10.0 TO 160000000.0
overall_width1.188 INCHES NOMINAL IN
ratio_displayF1/F2 TIMES THE PERIOD MULTIPLIERFROM DC TO 100 MHZ MHz
overall_height10.300 INCHES NOMINAL IN
overall_length13.775 INCHES NOMINAL IN
accuracy_ratingPORM RESOLUTION,PLUS PORM TIME BASE ERROR,MULTIPLIED BY FREQUENCY
frequency_range+0.000 TO 160.000 MEGAHERTZ OVERALL
measurement_typeFREQUENCY AND PERIOD AVERAGE AND RATIO AND TIME AND TIME INTERVAL AND TOTALIZING
sensitivity_rating25 MV RMS TO 100 MHZ AND 50 MV RMS TO 160 MHZ MHz
NSN6625-01-371-8269
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand 404681 TITLE COMPONENT PN 404681 MFR Legrand 404681
KEY FEATURES
CURRENT TYPE: DC
STANDARD FREQUENCY OUTPUT FEATURE: NOT INCLUDED
REMOTE CONTROL PROVISIONS: INCLUDED
UNPACKAGED UNIT WEIGHT: 3.000 POUNDS LBS
ELECTRICAL CONNECTION QUANTITY: 5
PLUG-IN UNITS PROVISION: NOT INCLUDED
FREQUENCY RANGE: +0.000 TO 160.000 MEGAHERTZ OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CURRENT TYPEDC
OVERALL WIDTH1.188 INCHES NOMINAL IN
STANDARD FREQUENCY OUTPUT FEATURENOT INCLUDED
REMOTE CONTROL PROVISIONSINCLUDED
UNPACKAGED UNIT WEIGHT3.000 POUNDS LBS
ELECTRICAL CONNECTION QUANTITY5
PLUG-IN UNITS PROVISIONNOT INCLUDED
FREQUENCY RANGE+0.000 TO 160.000 MEGAHERTZ OVERALL
ACCURACY RATINGPORM RESOLUTION,PLUS PORM TIME BASE ERROR,MULTIPLIED BY FREQUENCY
SOLID STATE FEATUREINCLUDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
SD13Interchangeable
interchangeable cross-reference
interchangeable
2-251Interchangeable
interchangeable cross-reference
interchangeable
WF421Interchangeable
interchangeable cross-reference
interchangeable
17-4385-100-510Interchangeable
interchangeable cross-reference
interchangeable
20A11EM251Interchangeable
interchangeable cross-reference
interchangeable
95482188Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 404681?
404681 is a 404681 manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace 404681?
There are 16 known substitutes for 404681: SD13, 2-251, WF421 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 404681?
404681 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-371-8269. This indicates validated use in U.S. government and defense supply chains.
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