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Technical Data Sheet
R2638 ✓ Verified by PartsTable
· 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 1.750 INCHES NOMINAL IN, shaft_style: ROUND, SLOTTED, shaft_length: 1.500 INCHES NOMINAL IN, actuator_type: SINGLE SHAFT, body_diameter: 0.984 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-01-086-8351, 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 R2638
NSN: 5905-01-086-8351
FSC: 5905
CAGE: 52542 — SYSTRON-DONNER CORP MICROWAVE/INSTRUMENT DIV (USA)
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
body_length1.750 INCHES NOMINAL IN
shaft_styleROUND, SLOTTED
shaft_length1.500 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter0.984 INCHES NOMINAL IN
shaft_diameter0.250 INCHES NOMINAL IN
mounting_methodSTANDARD BUSHING
section_quantity1
features_providedHERMETICALLY SEALED
terminal_locationRADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE
device_design_typeNONTURN AT 9:00 OCLOCKUNABLE TO DECODE
NSN5905-01-086-8351
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,NONWIRE WOUND, TITLE COMPONENT PN R2638 MFR RESISTOR,VARIABLE,NONW
KEY FEATURES
SHAFT DIAMETER: 0.250 INCHES NOMINAL IN
SHAFT STYLE: ROUND, SLOTTED
RELIABILITY INDICATOR: NOT ESTABLISHED
ACTUATOR TYPE: SINGLE SHAFT
EFFECTIVE ELECTRICAL ROTATION IN DEG ANGULAR ROTATION: 9000.0 NOMINAL
SECTION QUANTITY: 1
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER: 75.0 SINGLE SECTION
MOUNTING METHOD: STANDARD BUSHING
TECHNICAL CHARACTERISTICS (FLIS)
SHAFT DIAMETER0.250 INCHES NOMINAL IN
SHAFT STYLEROUND, SLOTTED
RELIABILITY INDICATORNOT ESTABLISHED
ACTUATOR TYPESINGLE SHAFT
EFFECTIVE ELECTRICAL ROTATION IN DEG ANGULAR ROTATION9000.0 NOMINAL
SECTION QUANTITY1
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER75.0 SINGLE SECTION
MOUNTING METHODSTANDARD BUSHING
FEATURES PROVIDEDHERMETICALLY SEALED
POWER DISSIPATION RATING PER SECTION IN WATTS0.5 FREE AIR SINGLE SECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
70008Interchangeable
interchangeable cross-reference
interchangeable
70010Interchangeable
interchangeable cross-reference
interchangeable
BA2RVA2Interchangeable
interchangeable cross-reference
interchangeable
102080Interchangeable
interchangeable cross-reference
interchangeable
516/4/00465Interchangeable
interchangeable cross-reference
interchangeable
144527-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R2638?
R2638 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).
What parts can replace R2638?
There are 6 known substitutes for R2638: 70008, 70010, BA2RVA2 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R2638?
R2638 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-01-086-8351. This indicates validated use in U.S. government and defense supply chains.
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