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Technical Data Sheet
PartsTable / COMPONENT / TF4R21YY
TF4R21YY ✓ 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,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 0.937 INCHES NOMINAL IN, body_height: 1.437 INCHES NOMINAL IN, body_length: 1.406 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, mounting_method: FLANGE AND SLOT SINGLE GROUP, frequency_rating: 100.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM 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 5950-00-167-6251, 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
TF4R21YY
NSN: 5950-00-167-6251
FSC: 5950
CAGE: 05853 — PTC TRANSFORMERS (USA)
SPECIFICATIONS
body_width0.937 INCHES NOMINAL IN
body_height1.437 INCHES NOMINAL IN
body_length1.406 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
mounting_methodFLANGE AND SLOT SINGLE GROUP
frequency_rating100.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
mounting_slot_width0.120 INCHES NOMINAL SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms9.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
winding_shielding_methodINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
mounting_facility_quantity2 SINGLE GROUP
terminal_type_and_quantity4 WIRE HOOK
NSN5950-00-167-6251
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN TF4R21YY MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 2 SINGLE GROUP
•
BODY WIDTH: 0.937 INCHES NOMINAL IN
•
BODY HEIGHT: 1.437 INCHES NOMINAL IN
•
WINDING SHIELDING METHOD: INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
FREQUENCY RATING: 100.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
•
TERMINAL TYPE AND QUANTITY: 4 WIRE HOOK
•
WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
BODY WIDTH0.937 INCHES NOMINAL IN
BODY HEIGHT1.437 INCHES NOMINAL IN
WINDING SHIELDING METHODINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
INCLOSURE TYPEHERMETICALLY SEALED
FREQUENCY RATING100.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
TERMINAL TYPE AND QUANTITY4 WIRE HOOK
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
MOUNTING METHODFLANGE AND SLOT SINGLE GROUP
IMPEDANCE RATING IN OHMS1500.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
S746205Interchangeable
interchangeable cross-reference
interchangeable
X101Interchangeable
interchangeable cross-reference
interchangeable
B107.600 TY1CL2Interchangeable
interchangeable cross-reference
interchangeable
64101Interchangeable
interchangeable cross-reference
interchangeable
6635PL0778101Interchangeable
interchangeable cross-reference
interchangeable
550B30250AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TF4R21YY?
TF4R21YY is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace TF4R21YY?
There are 9 known substitutes for TF4R21YY: S746205, X101, B107.600 TY1CL2 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TF4R21YY?
TF4R21YY is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-167-6251. 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.
PartsTable Design LLC · partstable.com
Last verified: July 2026