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Technical Data Sheet
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2187556 ✓ 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 TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include body_width: 3.750 INCHES NOMINAL IN, body_height: 4.000 INCHES MAXIMUM IN, body_length: 3.750 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, mounting_method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-154-3978, 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
2187556
NSN: 5950-00-154-3978
FSC: 5950
CAGE: 11447 — L3 TECHNOLOGIES, INC. DIV COMMUNICATION SYSTEMS-EAST (USA)
SPECIFICATIONS
body_width3.750 INCHES NOMINAL IN
body_height4.000 INCHES MAXIMUM IN
body_length3.750 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.219 INCHES NOMINAL SINGLE GROUP IN
winding_shielding_methodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
winding_operating_current35.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
winding_operating_voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
mounting_facility_quantity4 SINGLE GROUP
NSN5950-00-154-3978
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN 2187556 MFR TRANSFORMER,POWER
KEY FEATURES
•
INCLOSURE TYPE: FULLY INCLOSED
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
WINDING OPERATING CURRENT: 35.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
•
BODY WIDTH: 3.750 INCHES NOMINAL IN
•
WINDING OPERATING VOLTAGE: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
•
FREQUENCY RATING: 400.0 HERTZ NOMINAL SINGLE COMPONENT
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE TYPEFULLY INCLOSED
RELIABILITY INDICATORNOT ESTABLISHED
WINDING OPERATING CURRENT35.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
BODY WIDTH3.750 INCHES NOMINAL IN
WINDING OPERATING VOLTAGE115.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
FREQUENCY RATING400.0 HERTZ NOMINAL SINGLE COMPONENT
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
WINDING OPERATING CURRENT350.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
MOUNTING HOLE DIAMETER0.219 INCHES NOMINAL SINGLE GROUP IN
BODY LENGTH3.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
7215Interchangeable
interchangeable cross-reference
interchangeable
7215SYZQEInterchangeable
interchangeable cross-reference
interchangeable
3101-1204Interchangeable
interchangeable cross-reference
interchangeable
827792Interchangeable
interchangeable cross-reference
interchangeable
0042851Interchangeable
interchangeable cross-reference
interchangeable
215WDInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2187556?
2187556 is a TRANSFORMER,POWER.
What parts can replace 2187556?
There are 22 known substitutes for 2187556: 7215, 7215SYZQE, 3101-1204 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2187556?
2187556 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-154-3978. 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