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Technical Data Sheet
PartsTable / MRO / 1559-2
1559-2 ✓ Verified by PartsTable
Trefl · 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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: COPPER ALLOY, body_style: PLATE-MESHING, case_style: SQUARE, seal_width: 0.468 INCHES NOMINAL IN, body_height: 4.250 INCHES NOMINAL IN, body_length: 2.719 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-00-176-7155, 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→ 1559-2
NSN: 5940-00-176-7155
FSC: 5940
CAGE: 91833 — KEYSTONE ELECTRONICS CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY
body_stylePLATE-MESHING
case_styleSQUARE
seal_width0.468 INCHES NOMINAL IN
body_height4.250 INCHES NOMINAL IN
body_length2.719 INCHES NOMINAL IN
swage_depth0.094 INCHES IN
temp_rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
thread_class2B
adjustabilityNONADJUSTABLE
overall_width1.570 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
NSN5940-00-176-7155
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Trefl CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 1559-2 MFR Trefl CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
THRU-HOLE DIAMETER: 0.043 INCHES IN
•
TERMINAL LENGTH: 0.176 INCHES IN
•
OVERALL DIAMETER: 0.125 INCHES IN
•
MATERIAL: COPPER ALLOY CONDUCTOR ACCOMMODATION
•
LARGEST DIAMETER: 0.096 INCHES SINGLE END IN
•
CONDUCTOR ACCOMMODATION TYPE: SINGLE TURRET SINGLE END
•
TURRET MINOR DIAMETER: 0.071 INCHES SINGLE END IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,1/2H FED SPEC SINGLE MATERIAL RESPONSE MOUNTING FACILITY
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
THRU-HOLE DIAMETER0.043 INCHES IN
TERMINAL LENGTH0.176 INCHES IN
OVERALL DIAMETER0.125 INCHES IN
MATERIALCOPPER ALLOY CONDUCTOR ACCOMMODATION
LARGEST DIAMETER0.096 INCHES SINGLE END IN
CONDUCTOR ACCOMMODATION TYPESINGLE TURRET SINGLE END
TURRET MINOR DIAMETER0.071 INCHES SINGLE END IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,1/2H FED SPEC SINGLE MATERIAL RESPONSE MOUNTING FACILITY
SWAGE OUTSIDE DIAMETER0.071 INCHES IN
MOUNTING METHOD STYLESWAGE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1JA2597H86Interchangeable
interchangeable cross-reference
interchangeable
15-302-2-05Interchangeable
interchangeable cross-reference
interchangeable
74-474Interchangeable
interchangeable cross-reference
interchangeable
155-9-2Interchangeable
interchangeable cross-reference
interchangeable
20272Interchangeable
interchangeable cross-reference
interchangeable
242W118M1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1559-2?
1559-2 is a CAPACITOR,VARIABLE,AIR DIELECTRI manufactured by Trefl. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1559-2?
There are 12 known substitutes for 1559-2: 1JA2597H86, 15-302-2-05, 74-474 and 9 more. Substitute compatibility should be verified for your specific system.
Is 1559-2 still available?
1559-2 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