PartsTable
Technical Data Sheet
M503A ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: FIBER AND RUBBER AND FIBER SYNTHETIC AND RUBBER CHLOROPRENE CLASS CR AND RUBBER SYNTHETIC BODY, tube_type: MAGNETRON, nominal_width: 0.500 INCHES IN, performance_type: STANDARD CAPACITY, special_features: ENVELOPE MATERIAL: METAL, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-126-9661, 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
M503A
NSN: 5960-00-126-9661
FSC: 5960
CAGE: K0442 — TELEDYNE UK LIMITED (GBR)
SPECIFICATIONS
materialFIBER AND RUBBER AND FIBER SYNTHETIC AND RUBBER CHLOROPRENE CLASS CR AND RUBBER SYNTHETIC BODY
tube_typeMAGNETRON
nominal_width0.500 INCHES IN
performance_typeSTANDARD CAPACITY
special_featuresENVELOPE MATERIAL: METAL
style_designatorPLAIN
cross-sectional_size4L
strengthening_featureSYNTHETIC CORD
nominal_effective_outside_length40.000 INCHES IN
NSN5960-00-126-9661
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,NONWIRE WOUND, TITLE COMPONENT PN M503A MFR RESISTOR,VARIABLE,NONW
KEY FEATURES
TUBE TYPE: MAGNETRON
TECHNICAL CHARACTERISTICS (FLIS)
TUBE TYPEMAGNETRON
SPECIAL FEATURESENVELOPE MATERIAL: METAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
FHP138Interchangeable
interchangeable cross-reference
interchangeable
4L400Interchangeable
interchangeable cross-reference
interchangeable
122013-00Interchangeable
interchangeable cross-reference
interchangeable
130-745-00Interchangeable
interchangeable cross-reference
interchangeable
M503-AInterchangeable
interchangeable cross-reference
interchangeable
180425-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M503A?
M503A is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace M503A?
There are 10 known substitutes for M503A: FHP138, 4L400, 122013-00 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M503A?
M503A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-126-9661. This indicates validated use in U.S. government and defense supply chains.
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