PartsTable
Technical Data Sheet
PartsTable / MRO / 4970
4970 ✓ Verified by PartsTable
Zyxel · 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 color: U.S. ARMY BELLEAU WOOD GREEN 523, BOTH SIDE, COLOR CHIP/ID: 34087; IAW AW AMS-STD-595A BOTH SIDES A, width: 60.000 INCHES MINIMUM IN, material: PLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS, body_style: PISTON, body_length: 0.281 INCHES NOMINAL IN, design_form: STRAIGHT.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-198-4144, 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→ 4970
NSN: 5910-00-198-4144
FSC: 5910
CAGE: 91293 — KNOWLES CAZENOVIA, INC. DIV JOHANSON MANUFACTURING (USA)
SPECIFICATIONS
colorU.S. ARMY BELLEAU WOOD GREEN 523, BOTH SIDE, COLOR CHIP/ID: 34087; IAW AW AMS-STD-595A BOTH SIDES A
width60.000 INCHES MINIMUM IN
materialPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
body_stylePISTON
body_length0.281 INCHES NOMINAL IN
design_formSTRAIGHT
cloth_weight17.000 OUNCES PER SQUARE YARD MINIMUM AND 19.000 OUNCES PER SQUARE YARD MAXIMUM OZ
thread_class2A SINGLE END A
bore_diameter3.563 INCHES NOMINAL IN
bushing_shapeROUND
overall_width4.250 INCHES NOMINAL IN
bushing_length0.094 INCHES NOMINAL IN
NSN5910-00-198-4144
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Zyxel CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 4970 MFR Zyxel CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
BUSHING DIAMETER: 0.047 INCHES NOMINAL IN
•
CAPACITANCE RANGE IN PICOFARADS: +0.8 TO 10.0 SINGLE SECTION
•
TUNING CHARACTERISTIC: STRAIGHT LINE CAPACITY SINGLE SECTION
•
BUSHING SHAPE: ROUND
•
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY: 1 SLOTTED SCREW
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 THREADED BUSHING
•
QUALITY FACTOR AT 25 DEG CELSIUS: 2000.0
•
ADJUSTMENT DEVICE TORQUE: 0.500 INCH-OUNCES MINIMUM AND 5.000 INCH-OUNCES MAXIMUM IN
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)
BUSHING DIAMETER0.047 INCHES NOMINAL IN
CAPACITANCE RANGE IN PICOFARADS+0.8 TO 10.0 SINGLE SECTION
TUNING CHARACTERISTICSTRAIGHT LINE CAPACITY SINGLE SECTION
BUSHING SHAPEROUND
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY1 SLOTTED SCREW
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING
QUALITY FACTOR AT 25 DEG CELSIUS2000.0
ADJUSTMENT DEVICE TORQUE0.500 INCH-OUNCES MINIMUM AND 5.000 INCH-OUNCES MAXIMUM IN
TOLERANCE OF TEMP COEFFICIENT IN PPM PER DEG CELSIUS-20.0 TO 20.0 SINGLE SECTION
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS0.0 SINGLE SECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4970Interchangeable
interchangeable cross-reference
interchangeable
4970BInterchangeable
interchangeable cross-reference
interchangeable
4970-010Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-20696FInterchangeable
interchangeable cross-reference
interchangeable
MIL-C-20696Interchangeable
interchangeable cross-reference
interchangeable
700-0-74-188-101Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4970?
4970 is a CAPACITOR,VARIABLE,AIR DIELECTRI manufactured by Zyxel. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4970?
There are 6 known substitutes for 4970: 4970, 4970B, 4970-010 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4970?
4970 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-198-4144. 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.
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Last verified: July 2026