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Technical Data Sheet
E-291 ✓ 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: 1.250 INCHES MAXIMUM IN, body_height: 1.250 INCHES MAXIMUM IN, body_length: 1.500 INCHES MAXIMUM 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 5950-00-005-8904, 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
E-291
NSN: 5950-00-005-8904
FSC: 5950
CAGE: 09798 — PAYNE MAGNETICS, INC. (USA)
SPECIFICATIONS
body_width1.250 INCHES MAXIMUM IN
body_height1.250 INCHES MAXIMUM IN
body_length1.500 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
winding_power_rating2.8 WATTS SINGLE COMPONENT FIRST SECONDARY
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp130.0 CELSIUS DEGC
mounting_hole_diameter0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM SINGLE GROUP IN
winding_operating_voltage94.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
mounting_facility_quantity2 SINGLE GROUP
NSN5950-00-005-8904
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,POWER TITLE COMPONENT PN E-291 MFR TRANSFORMER,POWER
KEY FEATURES
WINDING OPERATING VOLTAGE: 94.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
INCLOSURE TYPE: FULLY INCLOSED
BODY LENGTH: 1.500 INCHES MAXIMUM IN
WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
MOUNTING HOLE DIAMETER: 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM SINGLE GROUP IN
WINDING POWER RATING: 1.3 WATTS SINGLE COMPONENT THIRD SECONDARY
BODY WIDTH: 1.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
WINDING OPERATING VOLTAGE94.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
INCLOSURE TYPEFULLY INCLOSED
WINDING OPERATING VOLTAGE19.20 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
BODY LENGTH1.500 INCHES MAXIMUM IN
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
MOUNTING HOLE DIAMETER0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM SINGLE GROUP IN
WINDING POWER RATING1.3 WATTS SINGLE COMPONENT THIRD SECONDARY
BODY WIDTH1.250 INCHES MAXIMUM IN
WINDING OPERATING VOLTAGE158.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
WINDING POWER RATING4.4 WATTS SINGLE COMPONENT SECOND SECONDARY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
42-731Interchangeable
interchangeable cross-reference
interchangeable
4273AInterchangeable
interchangeable cross-reference
interchangeable
4273Interchangeable
interchangeable cross-reference
interchangeable
ROM/PROM FAMILY 008Interchangeable
interchangeable cross-reference
interchangeable
3184670Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E-291?
E-291 is a TRANSFORMER,POWER.
What parts can replace E-291?
There are 5 known substitutes for E-291: 42-731, 4273A, 4273 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E-291?
E-291 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-005-8904. This indicates validated use in U.S. government and defense supply chains.
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