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Technical Data Sheet
PartsTable / COMPONENT / TF4S21YY
TF4S21YY ✓ 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_length: 1.420 INCHES MINIMUM AND 1.460 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, overall_length: 2.146 INCHES MAXIMUM IN, mounting_method: SLOT SINGLE GROUP, frequency_rating: 300.0 HERTZ MINIMUM AND 3.3 KILOHERTZ MAXIMUM SINGLE COMPONENT, mounting_slot_width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM SINGLE GROUP 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 5950-00-069-6894, 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
TF4S21YY
NSN: 5950-00-069-6894
FSC: 5950
CAGE: 12763 — DYNALEC CORPORATION (USA)
SPECIFICATIONS
body_length1.420 INCHES MINIMUM AND 1.460 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
overall_length2.146 INCHES MAXIMUM IN
mounting_methodSLOT SINGLE GROUP
frequency_rating300.0 HERTZ MINIMUM AND 3.3 KILOHERTZ MAXIMUM SINGLE COMPONENT
mounting_slot_width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM SINGLE GROUP IN
transformer_functionLINE
body_outside_diameter0.920 INCHES MINIMUM AND 0.960 INCHES MAXIMUM IN
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp130.0 CELSIUS DEGC
mounting_hole_diameter0.150 INCHES NOMINAL SINGLE GROUP IN
impedance_rating_in_ohms150.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
NSN5950-00-069-6894
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN TF4S21YY MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 2 SINGLE GROUP
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
MOUNTING HOLE DIAMETER: 0.140 INCHES NOMINAL SINGLE GROUP IN
•
MOUNTING METHOD: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
•
BODY OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
FREQUENCY RATING: 200.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
MAXIMUM TRANSFORMER POWER RATING: 30.0 DECIBELS SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
MOUNTING HOLE DIAMETER0.140 INCHES NOMINAL SINGLE GROUP IN
MOUNTING METHODFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
BODY OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
FREQUENCY RATING200.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
RELIABILITY INDICATORNOT ESTABLISHED
MAXIMUM TRANSFORMER POWER RATING30.0 DECIBELS SINGLE COMPONENT
IMPEDANCE RATING IN OHMS75.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
BODY LENGTH1.563 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
61038Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-27/2Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-27/2Interchangeable
interchangeable cross-reference
interchangeable
M27/2-01Interchangeable
interchangeable cross-reference
interchangeable
1757315Interchangeable
interchangeable cross-reference
interchangeable
214-1428Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TF4S21YY?
TF4S21YY is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace TF4S21YY?
There are 16 known substitutes for TF4S21YY: 61038, MIL-T-27/2, MIL-PRF-27/2 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TF4S21YY?
TF4S21YY is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-069-6894. 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