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Technical Data Sheet
PartsTable / COMPONENT / X243-4.0MHZ
X243-4.0MHZ ✓ Verified by PartsTable
— · COMPONENT
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 X243-4.0MHZ is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-01-156-8873, 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
X243-4.0MHZ
NSN: 5955-01-156-8873
FSC: 5955
CAGE: 57051 — XSIS ELECTRONICS INC (USA)
SPECIFICATIONS
Part NumberX243-4.0MHZ
NSN5955-01-156-8873
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available X243-4.0MHZ TITLE COMPONENT PN X243-4.0MHZ MFR X243-4.0MHZ
KEY FEATURES
•
IDENTIFICATION DESIGNATOR: X243 AT 4.0MHZ-57051 MHz
•
BASIC SHAPE STYLE: RECTANGULAR OR SQUARE
•
OVERALL GAIN: 5.0 MILLIAMPERES
•
INSTALLATION DESIGN: MODULE
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
SHOCK PULSE DURATION TIME: 1.0 MILLISECONDS MS
•
CIRCUIT CONSTRUCTION TYPE: SOLID STATE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.875 INCHES MAXIMUM IN
IDENTIFICATION DESIGNATORX243 AT 4.0MHZ-57051 MHz
BASIC SHAPE STYLERECTANGULAR OR SQUARE
OVERALL GAIN5.0 MILLIAMPERES
INSTALLATION DESIGNMODULE
INCLOSURE TYPEHERMETICALLY SEALED
SHOCK PULSE DURATION TIME1.0 MILLISECONDS MS
CIRCUIT CONSTRUCTION TYPESOLID STATE
SIGNAL VOLTAGE RATING PER CHANNEL0.200 VOLTS NOMINAL INPUT
CONNECTION CONTACT TYPE AND QUANTITY14 PRINTED CIRCUIT EXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
119437FInterchangeable
interchangeable cross-reference
interchangeable
8934595-6Interchangeable
interchangeable cross-reference
interchangeable
534245-3Interchangeable
interchangeable cross-reference
interchangeable
14899-1Interchangeable
interchangeable cross-reference
interchangeable
X243/4.0MHZInterchangeable
Same NIIN cross-reference
interchangeable
X243-40MHZInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X243-4.0MHZ?
X243-4.0MHZ is a X243-4.0MHZ.
What parts can replace X243-4.0MHZ?
There are 8 known substitutes for X243-4.0MHZ: 119437F, 8934595-6, 534245-3 and 5 more. Substitute compatibility should be verified for your specific system.
Is X243-4.0MHZ still available?
X243-4.0MHZ is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026